diff --git a/Cargo.toml b/Cargo.toml
index 8105bc5..b95206d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,6 +20,9 @@ chrono-tz = "0.4"
 image = {version = "0.24.3", optional = true}
 imageproc = {version = "0.23.0", optional = true}
 
+[dev-dependencies]
+java-properties = "1.4.1"
+
 [features]
 default = ["image"]
 image = ["dep:image", "dep:imageproc"]
\ No newline at end of file
diff --git a/src/aztec/DetectorTest.rs b/src/aztec/DetectorTest.rs
index 053573f..fbfae1b 100644
--- a/src/aztec/DetectorTest.rs
+++ b/src/aztec/DetectorTest.rs
@@ -67,6 +67,16 @@ fn test_error_in_parameter_locator_not_compact() {
     test_error_in_parameter_locator(&format!("{}{}{}", alphabet, alphabet, alphabet));
 }
 
+#[test]
+fn test_aztec_rxing_result_sample() {
+    let matrix = BitMatrix::parse_strings(TEST_BARCODE, "X ", "  ").expect("string parse success");
+    let r = Detector::new(matrix).detect(false);
+    assert!(r.is_ok());
+    let r = r.expect("result already tested as ok");
+    let res = decoder::decode(&r).expect("decode success");
+    assert_eq!("Histórico", res.getText());
+}
+
 // Test that we can tolerate errors in the parameter locator bits
 fn test_error_in_parameter_locator(data: &str) {
     let aztec = encoder::encoder::encode(data, 25, encoder::encoder::DEFAULT_AZTEC_LAYERS)
@@ -260,3 +270,80 @@ fn get_orientation_points(code: &AztecCode) -> Vec<Point> {
     }
     return result;
 }
+
+const TEST_BARCODE: &str = r"                    X X X X X                     X X X X X           X X X X X X X X X X                                         X X X X X           
+                    X X X X X                     X X X X X           X X X X X X X X X X                                         X X X X X           
+                    X X X X X                     X X X X X           X X X X X X X X X X                                         X X X X X           
+                    X X X X X                     X X X X X           X X X X X X X X X X                                         X X X X X           
+                    X X X X X                     X X X X X           X X X X X X X X X X                                         X X X X X           
+          X X X X X X X X X X X X X X X                     X X X X X           X X X X X X X X X X X X X X X                               X X X X X 
+          X X X X X X X X X X X X X X X                     X X X X X           X X X X X X X X X X X X X X X                               X X X X X 
+          X X X X X X X X X X X X X X X                     X X X X X           X X X X X X X X X X X X X X X                               X X X X X 
+          X X X X X X X X X X X X X X X                     X X X X X           X X X X X X X X X X X X X X X                               X X X X X 
+          X X X X X X X X X X X X X X X                     X X X X X           X X X X X X X X X X X X X X X                               X X X X X 
+                    X X X X X X X X X X                                         X X X X X           X X X X X           X X X X X                     
+                    X X X X X X X X X X                                         X X X X X           X X X X X           X X X X X                     
+                    X X X X X X X X X X                                         X X X X X           X X X X X           X X X X X                     
+                    X X X X X X X X X X                                         X X X X X           X X X X X           X X X X X                     
+                    X X X X X X X X X X                                         X X X X X           X X X X X           X X X X X                     
+X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X                     
+X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X                     
+X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X                     
+X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X                     
+X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X                     
+X X X X X X X X X X           X X X X X                                                                       X X X X X                               
+X X X X X X X X X X           X X X X X                                                                       X X X X X                               
+X X X X X X X X X X           X X X X X                                                                       X X X X X                               
+X X X X X X X X X X           X X X X X                                                                       X X X X X                               
+X X X X X X X X X X           X X X X X                                                                       X X X X X                               
+                    X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X           X X X X X           
+                    X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X           X X X X X           
+                    X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X           X X X X X           
+                    X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X           X X X X X           
+                    X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X           X X X X X           
+          X X X X X           X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X           X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X           X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X           X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X           X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X X X X X X X X X X X           X X X X X           X X X X X           X X X X X           X X X X X X X X X X X X X X X X X X X X 
+          X X X X X X X X X X X X X X X           X X X X X           X X X X X           X X X X X           X X X X X X X X X X X X X X X X X X X X 
+          X X X X X X X X X X X X X X X           X X X X X           X X X X X           X X X X X           X X X X X X X X X X X X X X X X X X X X 
+          X X X X X X X X X X X X X X X           X X X X X           X X X X X           X X X X X           X X X X X X X X X X X X X X X X X X X X 
+          X X X X X X X X X X X X X X X           X X X X X           X X X X X           X X X X X           X X X X X X X X X X X X X X X X X X X X 
+          X X X X X X X X X X X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X X X X X X X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X X X X X X X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X X X X X X X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X X X X X X X X X X X           X X X X X                               X X X X X           X X X X X                               
+          X X X X X X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X X X X X X                     
+          X X X X X X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X X X X X X                     
+          X X X X X X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X X X X X X                     
+          X X X X X X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X X X X X X                     
+          X X X X X X X X X X X X X X X           X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X X X X X X                     
+                    X X X X X X X X X X                                                                       X X X X X X X X X X X X X X X           
+                    X X X X X X X X X X                                                                       X X X X X X X X X X X X X X X           
+                    X X X X X X X X X X                                                                       X X X X X X X X X X X X X X X           
+                    X X X X X X X X X X                                                                       X X X X X X X X X X X X X X X           
+                    X X X X X X X X X X                                                                       X X X X X X X X X X X X X X X           
+X X X X X                     X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X 
+X X X X X                     X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X 
+X X X X X                     X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X 
+X X X X X                     X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X 
+X X X X X                     X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X           X X X X X 
+X X X X X                                         X X X X X                     X X X X X           X X X X X                                         
+X X X X X                                         X X X X X                     X X X X X           X X X X X                                         
+X X X X X                                         X X X X X                     X X X X X           X X X X X                                         
+X X X X X                                         X X X X X                     X X X X X           X X X X X                                         
+X X X X X                                         X X X X X                     X X X X X           X X X X X                                         
+X X X X X X X X X X                               X X X X X X X X X X X X X X X           X X X X X           X X X X X                     X X X X X 
+X X X X X X X X X X                               X X X X X X X X X X X X X X X           X X X X X           X X X X X                     X X X X X 
+X X X X X X X X X X                               X X X X X X X X X X X X X X X           X X X X X           X X X X X                     X X X X X 
+X X X X X X X X X X                               X X X X X X X X X X X X X X X           X X X X X           X X X X X                     X X X X X 
+X X X X X X X X X X                               X X X X X X X X X X X X X X X           X X X X X           X X X X X                     X X X X X 
+X X X X X X X X X X X X X X X X X X X X                     X X X X X X X X X X           X X X X X X X X X X           X X X X X           X X X X X 
+X X X X X X X X X X X X X X X X X X X X                     X X X X X X X X X X           X X X X X X X X X X           X X X X X           X X X X X 
+X X X X X X X X X X X X X X X X X X X X                     X X X X X X X X X X           X X X X X X X X X X           X X X X X           X X X X X 
+X X X X X X X X X X X X X X X X X X X X                     X X X X X X X X X X           X X X X X X X X X X           X X X X X           X X X X X 
+X X X X X X X X X X X X X X X X X X X X                     X X X X X X X X X X           X X X X X X X X X X           X X X X X           X X X X X 
+";
diff --git a/src/aztec/EncoderTest.rs b/src/aztec/EncoderTest.rs
index 154c923..9d5ffe7 100644
--- a/src/aztec/EncoderTest.rs
+++ b/src/aztec/EncoderTest.rs
@@ -177,8 +177,8 @@ fn testAztecWriter() {
     );
     // Test AztecWriter defaults
     let data = "In ut magna vel mauris malesuada";
-    // let writer =  AztecWriter{};
-    let matrix = AztecWriter::encode(data, &BarcodeFormat::AZTEC, 0, 0).expect("matrix must exist");
+     let writer =  AztecWriter{};
+    let matrix = writer.encode(data, &BarcodeFormat::AZTEC, 0, 0).expect("matrix must exist");
     let aztec = encoder::encode(
         data,
         encoder::DEFAULT_EC_PERCENT,
@@ -732,7 +732,7 @@ fn testWriter(
         EncodeHintType::ERROR_CORRECTION,
         EncodeHintValue::ErrorCorrection(ecc_percent.to_string()),
     );
-    let mut matrix = AztecWriter::encode_with_hints(data, &BarcodeFormat::AZTEC, 0, 0, &hints)
+    let mut matrix = AztecWriter{}.encode_with_hints(data, &BarcodeFormat::AZTEC, 0, 0, &hints)
         .expect("encoder created");
 
     let cset = match charset {
diff --git a/src/aztec/aztec_reader.rs b/src/aztec/aztec_reader.rs
index 8a1f818..20f9b33 100644
--- a/src/aztec/aztec_reader.rs
+++ b/src/aztec/aztec_reader.rs
@@ -20,7 +20,7 @@ use crate::{
     common::{DecoderRXingResult, DetectorRXingResult},
     exceptions::Exceptions,
     BarcodeFormat, BinaryBitmap, DecodeHintType, DecodeHintValue, RXingResult,
-    RXingResultMetadataType, Reader, RXingResultMetadataValue,
+    RXingResultMetadataType, RXingResultMetadataValue, Reader,
 };
 
 use super::{decoder, detector::Detector};
@@ -40,7 +40,7 @@ impl Reader for AztecReader {
      * @throws NotFoundException if a Data Matrix code cannot be found
      * @throws FormatException if a Data Matrix code cannot be decoded
      */
-    fn decode(&self,image: &BinaryBitmap) -> Result<RXingResult, Exceptions> {
+    fn decode(&self, image: &BinaryBitmap) -> Result<RXingResult, Exceptions> {
         self.decode_with_hints(image, &HashMap::new())
     }
 
@@ -52,11 +52,19 @@ impl Reader for AztecReader {
         // let notFoundException = None;
         // let formatException = None;
         let mut detector = Detector::new(image.getBlackMatrix()?.clone());
-        let mut points;
-        let mut decoderRXingResult: DecoderRXingResult;
+        let  points;
+        let  decoderRXingResult: DecoderRXingResult;
         //  try {
 
-        let detectorRXingResult = detector.detect(false)?;
+        let detectorRXingResult = if let Ok(det) = detector.detect(false) {
+            det
+        } else if let Ok(det) = detector.detect(true) {
+            det
+        } else {
+            return Err(Exceptions::NotFoundException(
+                "barcode not found".to_owned(),
+            ));
+        };
 
         points = detectorRXingResult.getPoints();
         decoderRXingResult = decoder::decode(&detectorRXingResult)?;
@@ -67,9 +75,9 @@ impl Reader for AztecReader {
         // }
         // if (decoderRXingResult == null) {
         // try {
-        let detectorRXingResult = detector.detect(true)?;
-        points = detectorRXingResult.getPoints();
-        decoderRXingResult = decoder::decode(&detectorRXingResult)?;
+        // let detectorRXingResult = detector.detect(true)?;
+        // points = detectorRXingResult.getPoints();
+        // decoderRXingResult = decoder::decode(&detectorRXingResult)?;
         // } catch (NotFoundException | FormatException e) {
         //   if (notFoundException != null) {
         //     throw notFoundException;
@@ -101,19 +109,26 @@ impl Reader for AztecReader {
                 .as_millis(),
         );
 
-        
-
         let byteSegments = decoderRXingResult.getByteSegments();
         if !byteSegments.is_empty() {
-            result.putMetadata(RXingResultMetadataType::BYTE_SEGMENTS, RXingResultMetadataValue::ByteSegments(byteSegments.clone()));
+            result.putMetadata(
+                RXingResultMetadataType::BYTE_SEGMENTS,
+                RXingResultMetadataValue::ByteSegments(byteSegments.clone()),
+            );
         }
         let ecLevel = decoderRXingResult.getECLevel();
         if !ecLevel.is_empty() {
-            result.putMetadata(RXingResultMetadataType::ERROR_CORRECTION_LEVEL, RXingResultMetadataValue::ErrorCorrectionLevel(ecLevel.to_owned()));
+            result.putMetadata(
+                RXingResultMetadataType::ERROR_CORRECTION_LEVEL,
+                RXingResultMetadataValue::ErrorCorrectionLevel(ecLevel.to_owned()),
+            );
         }
         result.putMetadata(
             RXingResultMetadataType::SYMBOLOGY_IDENTIFIER,
-            RXingResultMetadataValue::SymbologyIdentifier(format!("]z{}", decoderRXingResult.getSymbologyModifier())),
+            RXingResultMetadataValue::SymbologyIdentifier(format!(
+                "]z{}",
+                decoderRXingResult.getSymbologyModifier()
+            )),
         );
 
         Ok(result)
diff --git a/src/BufferedImageLuminanceSource.rs b/src/buffered_image_luminance_source.rs
similarity index 95%
rename from src/BufferedImageLuminanceSource.rs
rename to src/buffered_image_luminance_source.rs
index 01fb657..7548582 100644
--- a/src/BufferedImageLuminanceSource.rs
+++ b/src/buffered_image_luminance_source.rs
@@ -21,12 +21,12 @@
 // import java.awt.image.BufferedImage;
 // import java.awt.image.WritableRaster;
 
-use image::{DynamicImage, Luma};
+use image::{DynamicImage, Luma, GenericImage, EncodableLayout};
 use imageproc::geometric_transformations::rotate_about_center;
 
 use crate::LuminanceSource;
 
-static MINUS_45_IN_RADIANS: f32 = -0.7853981633974483; // Math.toRadians(-45.0)
+const MINUS_45_IN_RADIANS: f32 = -0.7853981633974483; // Math.toRadians(-45.0)
 
 /**
  * This LuminanceSource implementation is meant for J2SE clients and our blackbox unit tests.
@@ -97,9 +97,10 @@ impl BufferedImageLuminanceSource {
         //   }
 
         // }
+        
 
         Self {
-            image: image,
+            image: DynamicImage::from(image.to_luma8()),
             width: width,
             height: height,
             left: left,
@@ -189,8 +190,8 @@ impl LuminanceSource for BufferedImageLuminanceSource {
         let img = rotate_about_center(
             &self.image.to_luma8(),
             MINUS_45_IN_RADIANS,
-            imageproc::geometric_transformations::Interpolation::Bicubic,
-            Luma([0; 1]),
+            imageproc::geometric_transformations::Interpolation::Nearest,
+            Luma([255; 1]),
         );
 
         let new_img = DynamicImage::from(img);
diff --git a/src/common/mod.rs b/src/common/mod.rs
index 0688d16..6c506ab 100644
--- a/src/common/mod.rs
+++ b/src/common/mod.rs
@@ -3829,37 +3829,38 @@ impl Binarizer for HybridBinarizer {
             && height >= HybridBinarizer::MINIMUM_DIMENSION
         {
             let luminances = source.getMatrix();
-            let mut subWidth = width >> HybridBinarizer::BLOCK_SIZE_POWER;
+            let mut sub_width = width >> HybridBinarizer::BLOCK_SIZE_POWER;
             if (width & HybridBinarizer::BLOCK_SIZE_MASK) != 0 {
-                subWidth += 1;
+                sub_width += 1;
             }
-            let mut subHeight = height >> HybridBinarizer::BLOCK_SIZE_POWER;
+            let mut sub_height = height >> HybridBinarizer::BLOCK_SIZE_POWER;
             if (height & HybridBinarizer::BLOCK_SIZE_MASK) != 0 {
-                subHeight += 1;
+                sub_height += 1;
             }
-            let blackPoints = Self::calculateBlackPoints(
+            let black_points = Self::calculateBlackPoints(
                 &luminances,
-                subWidth as u32,
-                subHeight as u32,
+                sub_width as u32,
+                sub_height as u32,
                 width as u32,
                 height as u32,
             );
 
-            let mut newMatrix = BitMatrix::new(width as u32, height as u32)?;
+            let mut new_matrix = BitMatrix::new(width as u32, height as u32)?;
             Self::calculateThresholdForBlock(
                 &luminances,
-                subWidth as u32,
-                subHeight as u32,
+                sub_width as u32,
+                sub_height as u32,
                 width as u32,
                 height as u32,
-                &blackPoints,
-                &mut newMatrix,
+                &black_points,
+                &mut new_matrix,
             );
-            matrix = newMatrix;
+            matrix = new_matrix;
         } else {
             // If the image is too small, fall back to the global histogram approach.
             matrix = self.ghb.getBlackMatrix()?;
         }
+        //  dbg!(matrix.to_string());
         Ok(matrix)
     }
 
@@ -3997,16 +3998,16 @@ impl HybridBinarizer {
                 if xoffset > maxXOffset as u32 {
                     xoffset = maxXOffset as u32;
                 }
-                let mut sum = 0;
-                let mut min = 0xFF;
-                let mut max = 0;
+                let mut sum = 0u32;
+                let mut min = 0;
+                let mut max = 0xFF;
                 let mut offset = yoffset * width + xoffset;
                 for yy in 0..HybridBinarizer::BLOCK_SIZE {
                     // for (int yy = 0, offset = yoffset * width + xoffset; yy < HybridBinarizer::BLOCK_SIZE; yy++, offset += width) {
                     for xx in 0..HybridBinarizer::BLOCK_SIZE {
                         //   for (int xx = 0; xx < HybridBinarizer::BLOCK_SIZE; xx++) {
                         let pixel = luminances[offset as usize + xx];
-                        sum += pixel;
+                        sum += pixel as u32;
                         // still looking for good contrast
                         if pixel < min {
                             min = pixel;
@@ -4023,7 +4024,7 @@ impl HybridBinarizer {
                             // for (yy++, offset += width; yy < HybridBinarizer::BLOCK_SIZE; yy++, offset += width) {
                             for xx in 0..HybridBinarizer::BLOCK_SIZE {
                                 //   for (int xx = 0; xx < BLOCK_SIZE; xx++) {
-                                sum += luminances[offset as usize + xx];
+                                sum += luminances[offset as usize + xx] as u32;
                             }
                             offset += width;
                         }
@@ -4041,7 +4042,7 @@ impl HybridBinarizer {
                     //
                     // The default assumption is that the block is light/background. Since no estimate for
                     // the level of dark pixels exists locally, use half the min for the block.
-                    average = min / 2;
+                    average = min as u32 / 2;
 
                     if y > 0 && x > 0 {
                         // Correct the "white background" assumption for blocks that have neighbors by comparing
@@ -4051,16 +4052,16 @@ impl HybridBinarizer {
                         // the boundaries is used for the interior.
 
                         // The (min < bp) is arbitrary but works better than other heuristics that were tried.
-                        let averageNeighborBlackPoint = (blackPoints[y as usize - 1][x as usize]
+                        let average_neighbor_black_point = (blackPoints[y as usize - 1][x as usize]
                             + (2 * blackPoints[y as usize][x as usize - 1])
                             + blackPoints[y as usize - 1][x as usize - 1])
                             / 4;
-                        if (min < averageNeighborBlackPoint) {
-                            average = averageNeighborBlackPoint;
+                        if (min < average_neighbor_black_point) {
+                            average = average_neighbor_black_point as u32;
                         }
                     }
                 }
-                blackPoints[y as usize][x as usize] = average;
+                blackPoints[y as usize][x as usize] = average as u8;
             }
         }
         return blackPoints
diff --git a/src/lib.rs b/src/lib.rs
index f8f93ce..39e891a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,13 +1,15 @@
-mod aztec;
-mod client;
-mod common;
+pub mod aztec;
+pub mod client;
+pub mod common;
 mod exceptions;
 
-#[cfg(feature = "image")]
-mod BufferedImageLuminanceSource;
+pub use exceptions::Exceptions;
 
 #[cfg(feature = "image")]
-pub use BufferedImageLuminanceSource::*;
+mod buffered_image_luminance_source;
+
+#[cfg(feature = "image")]
+pub use buffered_image_luminance_source::*;
 
 use crate::common::{BitArray, BitMatrix};
 use exceptions::*;
@@ -454,7 +456,7 @@ pub enum EncodeHintValue {
  * @author dswitkin@google.com (Daniel Switkin)
  * @see Reader#decode(BinaryBitmap,java.util.Map)
  */
-#[derive(Eq, PartialEq, Hash, Debug)]
+#[derive(Eq, PartialEq, Hash, Debug, Clone, Copy)]
 pub enum DecodeHintType {
     /**
      * Unspecified, application-specific hint. Maps to an unspecified {@link Object}.
@@ -558,7 +560,7 @@ pub enum DecodeHintType {
  * @see DecodeHintType#NEED_RESULT_POINT_CALLBACK
  */
 pub type RXingResultPointCallback = fn(&RXingResultPoint);
-
+#[derive(Clone)]
 pub enum DecodeHintValue {
     /**
      * Unspecified, application-specific hint. Maps to an unspecified {@link Object}.
@@ -671,6 +673,7 @@ pub trait Writer {
      * @throws WriterException if contents cannot be encoded legally in a format
      */
     fn encode(
+        &self,
         contents: &str,
         format: &BarcodeFormat,
         width: i32,
@@ -687,6 +690,7 @@ pub trait Writer {
      * @throws WriterException if contents cannot be encoded legally in a format
      */
     fn encode_with_hints(
+        &self,
         contents: &str,
         format: &BarcodeFormat,
         width: i32,
@@ -735,7 +739,7 @@ pub trait Reader {
      * @throws ChecksumException if a potential barcode is found but does not pass its checksum
      * @throws FormatException if a potential barcode is found but format is invalid
      */
-    fn decode(image: &BinaryBitmap) -> Result<RXingResult, Exceptions>;
+    fn decode(&self, image: &BinaryBitmap) -> Result<RXingResult, Exceptions>;
 
     /**
      * Locates and decodes a barcode in some format within an image. This method also accepts
@@ -752,6 +756,7 @@ pub trait Reader {
      * @throws FormatException if a potential barcode is found but format is invalid
      */
     fn decode_with_hints(
+        &self,
         image: &BinaryBitmap,
         hints: &HashMap<DecodeHintType, DecodeHintValue>,
     ) -> Result<RXingResult, Exceptions>;
@@ -760,7 +765,7 @@ pub trait Reader {
      * Resets any internal state the implementation has after a decode, to prepare it
      * for reuse.
      */
-    fn reset();
+    fn reset(&self);
 }
 
 /*
@@ -787,7 +792,7 @@ pub trait Reader {
  *
  * @author Sean Owen
  */
-#[derive(Eq, PartialEq, Hash)]
+#[derive(Eq, PartialEq, Hash, Debug)]
 pub enum RXingResultMetadataType {
     /**
      * Unspecified, application-specific metadata. Maps to an unspecified {@link Object}.
@@ -867,11 +872,32 @@ pub enum RXingResultMetadataType {
     SYMBOLOGY_IDENTIFIER,
 }
 
+impl From<String> for RXingResultMetadataType {
+    fn from(in_str: String) -> Self {
+        match in_str.as_str() {
+            "OTHER" => RXingResultMetadataType::OTHER,
+            "ORIENTATION" => RXingResultMetadataType::ORIENTATION,
+            "BYTE_SEGMENTS" => RXingResultMetadataType::BYTE_SEGMENTS,
+            "ERROR_CORRECTION_LEVEL"=> RXingResultMetadataType::ERROR_CORRECTION_LEVEL,
+            "ISSUE_NUMBER"=> RXingResultMetadataType::ISSUE_NUMBER,
+            "SUGGESTED_PRICE"=> RXingResultMetadataType::SUGGESTED_PRICE,
+            "POSSIBLE_COUNTRY"=> RXingResultMetadataType::POSSIBLE_COUNTRY,
+            "UPC_EAN_EXTENSION"=>RXingResultMetadataType::UPC_EAN_EXTENSION,
+            "PDF417_EXTRA_METADATA"=> RXingResultMetadataType::PDF417_EXTRA_METADATA,
+            "STRUCTURED_APPEND_SEQUENCE"=> RXingResultMetadataType::STRUCTURED_APPEND_SEQUENCE,
+            "STRUCTURED_APPEND_PARITY"=>RXingResultMetadataType::STRUCTURED_APPEND_PARITY,
+            "SYMBOLOGY_IDENTIFIER"=>RXingResultMetadataType::SYMBOLOGY_IDENTIFIER,
+            _ => RXingResultMetadataType::OTHER,
+        }
+    }
+}
+
+#[derive(Debug,PartialEq, Eq)]
 pub enum RXingResultMetadataValue {
     /**
      * Unspecified, application-specific metadata. Maps to an unspecified {@link Object}.
      */
-    OTHER,
+    OTHER(String),
 
     /**
      * Denotes the likely approximate orientation of the barcode in the image. This value
diff --git a/test_resources/matrix_visualizer.html b/test_resources/matrix_visualizer.html
index bb6d65b..693e147 100644
--- a/test_resources/matrix_visualizer.html
+++ b/test_resources/matrix_visualizer.html
@@ -11,6 +11,9 @@
         .bg_color {
             background-color: lightblue;
         }
+        .super_small {
+            font-size: xx-small;
+        }
     </style>
     <script>
         function token_text(raw_text, true_value, false_value) {
@@ -124,6 +127,10 @@
                 new_th.appendChild(new_child_node);
             }
 
+            if (column_count > 80) {
+                new_table.classList.add("super_small");
+            }
+
             root.replaceChildren(new_table);
         }
 
diff --git a/tests/AztecBlackBox1TestCase.java b/tests/AztecBlackBox1TestCase.rs
similarity index 50%
rename from tests/AztecBlackBox1TestCase.java
rename to tests/AztecBlackBox1TestCase.rs
index 029abf2..a0c4f0b 100644
--- a/tests/AztecBlackBox1TestCase.java
+++ b/tests/AztecBlackBox1TestCase.rs
@@ -14,22 +14,30 @@
  * limitations under the License.
  */
 
-package com.google.zxing.aztec;
+use rxing::{aztec::AztecReader, BarcodeFormat};
 
-import com.google.zxing.BarcodeFormat;
-import com.google.zxing.common.AbstractBlackBoxTestCase;
+mod common;
 
 /**
  * @author David Olivier
  */
-public final class AztecBlackBox1TestCase extends AbstractBlackBoxTestCase {
+// public final class AztecBlackBox1TestCase extends AbstractBlackBoxTestCase {
 
-  public AztecBlackBox1TestCase() {
-    super("src/test/resources/blackbox/aztec-1", new AztecReader(), BarcodeFormat.AZTEC);
-    addTest(14, 14, 0.0f);
-    addTest(14, 14, 90.0f);
-    addTest(14, 14, 180.0f);
-    addTest(14, 14, 270.0f);
-  }
+#[test]
+fn aztec_black_box1_test_case() {
+    let mut tester = common::AbstractBlackBoxTestCase::new(
+        "test_resources/blackbox/aztec-1",
+        Box::new(AztecReader {}),
+        BarcodeFormat::AZTEC,
+    );
 
+    // super("src/test/resources/blackbox/aztec-1", AztecReader::new(), BarcodeFormat::AZTEC);
+    tester.addTest(14, 14, 0.0);
+    tester.addTest(14, 14, 90.0);
+    tester.addTest(14, 14, 180.0);
+    tester.addTest(14, 14, 270.0);
+
+    tester.testBlackBox();
 }
+
+// }
diff --git a/tests/AztecBlackBox2TestCase.java b/tests/AztecBlackBox2TestCase.rs
similarity index 61%
rename from tests/AztecBlackBox2TestCase.java
rename to tests/AztecBlackBox2TestCase.rs
index e250ae2..3bd96ae 100644
--- a/tests/AztecBlackBox2TestCase.java
+++ b/tests/AztecBlackBox2TestCase.rs
@@ -14,24 +14,26 @@
  * limitations under the License.
  */
 
-package com.google.zxing.aztec;
+use rxing::{aztec::AztecReader, BarcodeFormat};
 
-import com.google.zxing.BarcodeFormat;
-import com.google.zxing.common.AbstractBlackBoxTestCase;
+ mod common;
 
 /**
  * A test of Aztec barcodes under real world lighting conditions, taken with a mobile phone.
  *
  * @author dswitkin@google.com (Daniel Switkin)
  */
-public final class AztecBlackBox2TestCase extends AbstractBlackBoxTestCase {
+#[test]
+  fn AztecBlackBox2TestCase() {
+    let mut tester = common::AbstractBlackBoxTestCase::new(
+      "test_resources/blackbox/aztec-2",
+      Box::new(AztecReader{}),
+      BarcodeFormat::AZTEC);
+    // super(, new AztecReader(), BarcodeFormat.AZTEC);
+    tester.addTest(5, 5, 0.0);
+    tester.addTest(4, 4, 90.0);
+    tester.addTest(6, 6, 180.0);
+    tester.addTest(3, 3, 270.0);
 
-  public AztecBlackBox2TestCase() {
-    super("src/test/resources/blackbox/aztec-2", new AztecReader(), BarcodeFormat.AZTEC);
-    addTest(5, 5, 0.0f);
-    addTest(4, 4, 90.0f);
-    addTest(6, 6, 180.0f);
-    addTest(3, 3, 270.0f);
+    tester.testBlackBox();
   }
-
-}
diff --git a/tests/common/AbstractBlackBoxTestCase.java b/tests/common/AbstractBlackBoxTestCase.java
deleted file mode 100644
index eefbe43..0000000
--- a/tests/common/AbstractBlackBoxTestCase.java
+++ /dev/null
@@ -1,357 +0,0 @@
-/*
- * Copyright 2008 ZXing authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.google.zxing.common;
-
-import com.google.zxing.BarcodeFormat;
-import com.google.zxing.BinaryBitmap;
-import com.google.zxing.BufferedImageLuminanceSource;
-import com.google.zxing.DecodeHintType;
-import com.google.zxing.LuminanceSource;
-import com.google.zxing.Reader;
-import com.google.zxing.ReaderException;
-import com.google.zxing.RXingResult;
-import com.google.zxing.RXingResultMetadataType;
-import org.junit.Assert;
-import org.junit.Test;
-
-import javax.imageio.ImageIO;
-import java.awt.Graphics;
-import java.awt.geom.AffineTransform;
-import java.awt.geom.RectangularShape;
-import java.awt.image.AffineTransformOp;
-import java.awt.image.BufferedImage;
-import java.awt.image.BufferedImageOp;
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.nio.charset.Charset;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.DirectoryStream;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.ArrayList;
-import java.util.EnumMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Properties;
-import java.util.logging.Logger;
-
-/**
- * @author Sean Owen
- * @author dswitkin@google.com (Daniel Switkin)
- */
-public abstract class AbstractBlackBoxTestCase extends Assert {
-
-  private static final Logger log = Logger.getLogger(AbstractBlackBoxTestCase.class.getSimpleName());
-
-  private final Path testBase;
-  private final Reader barcodeReader;
-  private final BarcodeFormat expectedFormat;
-  private final List<TestRXingResult> testRXingResults;
-  private final EnumMap<DecodeHintType,Object> hints = new EnumMap<>(DecodeHintType.class);
-
-  public static Path buildTestBase(String testBasePathSuffix) {
-    // A little workaround to prevent aggravation in my IDE
-    Path testBase = Paths.get(testBasePathSuffix);
-    if (!Files.exists(testBase)) {
-      // try starting with 'core' since the test base is often given as the project root
-      testBase = Paths.get("core").resolve(testBasePathSuffix);
-    }
-    return testBase;
-  }
-
-  protected AbstractBlackBoxTestCase(String testBasePathSuffix,
-                                     Reader barcodeReader,
-                                     BarcodeFormat expectedFormat) {
-    this.testBase = buildTestBase(testBasePathSuffix);
-    this.barcodeReader = barcodeReader;
-    this.expectedFormat = expectedFormat;
-    testRXingResults = new ArrayList<>();
-
-    System.setProperty("java.util.logging.SimpleFormatter.format", "%4$s: %5$s%6$s%n");
-  }
-
-  protected final Path getTestBase() {
-    return testBase;
-  }
-
-  protected final void addTest(int mustPassCount, int tryHarderCount, float rotation) {
-    addTest(mustPassCount, tryHarderCount, 0, 0, rotation);
-  }
-
-  protected void addHint(DecodeHintType hint) {
-    hints.put(hint, Boolean.TRUE);
-  }
-
-  /**
-   * Adds a new test for the current directory of images.
-   *
-   * @param mustPassCount The number of images which must decode for the test to pass.
-   * @param tryHarderCount The number of images which must pass using the try harder flag.
-   * @param maxMisreads Maximum number of images which can fail due to successfully reading the wrong contents
-   * @param maxTryHarderMisreads Maximum number of images which can fail due to successfully
-   *                             reading the wrong contents using the try harder flag
-   * @param rotation The rotation in degrees clockwise to use for this test.
-   */
-  protected final void addTest(int mustPassCount,
-                               int tryHarderCount,
-                               int maxMisreads,
-                               int maxTryHarderMisreads,
-                               float rotation) {
-    testRXingResults.add(new TestRXingResult(mustPassCount, tryHarderCount, maxMisreads, maxTryHarderMisreads, rotation));
-  }
-
-  protected final List<Path> getImageFiles() throws IOException {
-    assertTrue("Please download and install test images, and run from the 'core' directory", Files.exists(testBase));
-    List<Path> paths = new ArrayList<>();
-    try (DirectoryStream<Path> pathIt = Files.newDirectoryStream(testBase, "*.{jpg,jpeg,gif,png,JPG,JPEG,GIF,PNG}")) {
-      for (Path path : pathIt) {
-        paths.add(path);
-      }
-    }
-    return paths;
-  }
-
-  final Reader getReader() {
-    return barcodeReader;
-  }
-
-  @Test
-  public void testBlackBox() throws IOException {
-    assertFalse(testRXingResults.isEmpty());
-
-    List<Path> imageFiles = getImageFiles();
-    int testCount = testRXingResults.size();
-
-    int[] passedCounts = new int[testCount];
-    int[] misreadCounts = new int[testCount];
-    int[] tryHarderCounts = new int[testCount];
-    int[] tryHarderMisreadCounts = new int[testCount];
-
-    for (Path testImage : imageFiles) {
-      log.info(String.format("Starting %s", testImage));
-
-      BufferedImage image = ImageIO.read(testImage.toFile());
-
-      String testImageFileName = testImage.getFileName().toString();
-      String fileBaseName = testImageFileName.substring(0, testImageFileName.indexOf('.'));
-      Path expectedTextFile = testBase.resolve(fileBaseName + ".txt");
-      String expectedText;
-      if (Files.exists(expectedTextFile)) {
-        expectedText = readFileAsString(expectedTextFile, StandardCharsets.UTF_8);
-      } else {
-        expectedTextFile = testBase.resolve(fileBaseName + ".bin");
-        assertTrue(Files.exists(expectedTextFile));
-        expectedText = readFileAsString(expectedTextFile, StandardCharsets.ISO_8859_1);
-      }
-
-      Path expectedMetadataFile = testBase.resolve(fileBaseName + ".metadata.txt");
-      Properties expectedMetadata = new Properties();
-      if (Files.exists(expectedMetadataFile)) {
-        try (BufferedReader reader = Files.newBufferedReader(expectedMetadataFile, StandardCharsets.UTF_8)) {
-          expectedMetadata.load(reader);
-        }
-      }
-
-      for (int x = 0; x < testCount; x++) {
-        float rotation = testRXingResults.get(x).getRotation();
-        BufferedImage rotatedImage = rotateImage(image, rotation);
-        LuminanceSource source = new BufferedImageLuminanceSource(rotatedImage);
-        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
-        try {
-          if (decode(bitmap, rotation, expectedText, expectedMetadata, false)) {
-            passedCounts[x]++;
-          } else {
-            misreadCounts[x]++;
-          }
-        } catch (ReaderException ignored) {
-          log.fine(String.format("could not read at rotation %f", rotation));
-        }
-        try {
-          if (decode(bitmap, rotation, expectedText, expectedMetadata, true)) {
-            tryHarderCounts[x]++;
-          } else {
-            tryHarderMisreadCounts[x]++;
-          }
-        } catch (ReaderException ignored) {
-          log.fine(String.format("could not read at rotation %f w/TH", rotation));
-        }
-      }
-    }
-
-    // Print the results of all tests first
-    int totalFound = 0;
-    int totalMustPass = 0;
-    int totalMisread = 0;
-    int totalMaxMisread = 0;
-
-    for (int x = 0; x < testRXingResults.size(); x++) {
-      TestRXingResult testRXingResult = testRXingResults.get(x);
-      log.info(String.format("Rotation %d degrees:", (int) testRXingResult.getRotation()));
-      log.info(String.format(" %d of %d images passed (%d required)",
-                             passedCounts[x], imageFiles.size(), testRXingResult.getMustPassCount()));
-      int failed = imageFiles.size() - passedCounts[x];
-      log.info(String.format(" %d failed due to misreads, %d not detected",
-                             misreadCounts[x], failed - misreadCounts[x]));
-      log.info(String.format(" %d of %d images passed with try harder (%d required)",
-                             tryHarderCounts[x], imageFiles.size(), testRXingResult.getTryHarderCount()));
-      failed = imageFiles.size() - tryHarderCounts[x];
-      log.info(String.format(" %d failed due to misreads, %d not detected",
-                             tryHarderMisreadCounts[x], failed - tryHarderMisreadCounts[x]));
-      totalFound += passedCounts[x] + tryHarderCounts[x];
-      totalMustPass += testRXingResult.getMustPassCount() + testRXingResult.getTryHarderCount();
-      totalMisread += misreadCounts[x] + tryHarderMisreadCounts[x];
-      totalMaxMisread += testRXingResult.getMaxMisreads() + testRXingResult.getMaxTryHarderMisreads();
-    }
-
-    int totalTests = imageFiles.size() * testCount * 2;
-    log.info(String.format("Decoded %d images out of %d (%d%%, %d required)",
-                           totalFound, totalTests, totalFound * 100 / totalTests, totalMustPass));
-    if (totalFound > totalMustPass) {
-      log.warning(String.format("+++ Test too lax by %d images", totalFound - totalMustPass));
-    } else if (totalFound < totalMustPass) {
-      log.warning(String.format("--- Test failed by %d images", totalMustPass - totalFound));
-    }
-
-    if (totalMisread < totalMaxMisread) {
-      log.warning(String.format("+++ Test expects too many misreads by %d images", totalMaxMisread - totalMisread));
-    } else if (totalMisread > totalMaxMisread) {
-      log.warning(String.format("--- Test had too many misreads by %d images", totalMisread - totalMaxMisread));
-    }
-
-    // Then run through again and assert if any failed
-    for (int x = 0; x < testCount; x++) {
-      TestRXingResult testRXingResult = testRXingResults.get(x);
-      String label = "Rotation " + testRXingResult.getRotation() + " degrees: Too many images failed";
-      assertTrue(label,
-                 passedCounts[x] >= testRXingResult.getMustPassCount());
-      assertTrue("Try harder, " + label,
-                 tryHarderCounts[x] >= testRXingResult.getTryHarderCount());
-      label = "Rotation " + testRXingResult.getRotation() + " degrees: Too many images misread";
-      assertTrue(label,
-                 misreadCounts[x] <= testRXingResult.getMaxMisreads());
-      assertTrue("Try harder, " + label,
-                 tryHarderMisreadCounts[x] <= testRXingResult.getMaxTryHarderMisreads());
-    }
-  }
-
-  private boolean decode(BinaryBitmap source,
-                         float rotation,
-                         String expectedText,
-                         Map<?,?> expectedMetadata,
-                         boolean tryHarder) throws ReaderException {
-
-    String suffix = String.format(" (%srotation: %d)", tryHarder ? "try harder, " : "", (int) rotation);
-
-    Map<DecodeHintType,Object> hints = this.hints.clone();
-    if (tryHarder) {
-      hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
-    }
-
-    // Try in 'pure' mode mostly to exercise PURE_BARCODE code paths for exceptions;
-    // not expected to pass, generally
-    RXingResult result = null;
-    try {
-      Map<DecodeHintType,Object> pureHints = new EnumMap<>(hints);
-      pureHints.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
-      result = barcodeReader.decode(source, pureHints);
-    } catch (ReaderException re) {
-      // continue
-    }
-
-    if (result == null) {
-      result = barcodeReader.decode(source, hints);
-    }
-
-    if (expectedFormat != result.getBarcodeFormat()) {
-      log.info(String.format("Format mismatch: expected '%s' but got '%s'%s",
-                             expectedFormat, result.getBarcodeFormat(), suffix));
-      return false;
-    }
-
-    String resultText = result.getText();
-    if (!expectedText.equals(resultText)) {
-      log.info(String.format("Content mismatch: expected '%s' but got '%s'%s",
-                             expectedText, resultText, suffix));
-      return false;
-    }
-
-    Map<RXingResultMetadataType,?> resultMetadata = result.getRXingResultMetadata();
-    for (Map.Entry<?,?> metadatum : expectedMetadata.entrySet()) {
-      RXingResultMetadataType key = RXingResultMetadataType.valueOf(metadatum.getKey().toString());
-      Object expectedValue = metadatum.getValue();
-      Object actualValue = resultMetadata == null ? null : resultMetadata.get(key);
-      if (!expectedValue.equals(actualValue)) {
-        log.info(String.format("Metadata mismatch for key '%s': expected '%s' but got '%s'",
-                               key, expectedValue, actualValue));
-        return false;
-      }
-    }
-
-    return true;
-  }
-
-  protected static String readFileAsString(Path file, Charset charset) throws IOException {
-    String stringContents = new String(Files.readAllBytes(file), charset);
-    if (stringContents.endsWith("\n")) {
-      log.info("String contents of file " + file + " end with a newline. " +
-                  "This may not be intended and cause a test failure");
-    }
-    return stringContents;
-  }
-
-  protected static BufferedImage rotateImage(BufferedImage original, float degrees) {
-    if (degrees == 0.0f) {
-      return original;
-    }
-
-    switch (original.getType()) {
-      case BufferedImage.TYPE_BYTE_INDEXED:
-      case BufferedImage.TYPE_BYTE_BINARY:
-        BufferedImage argb = new BufferedImage(original.getWidth(),
-                                               original.getHeight(),
-                                               BufferedImage.TYPE_INT_ARGB);
-        Graphics g = argb.createGraphics();
-        g.drawImage(original, 0, 0, null);
-        g.dispose();
-        original = argb;
-        break;
-    }
-
-    double radians = Math.toRadians(degrees);
-
-    // Transform simply to find out the new bounding box (don't actually run the image through it)
-    AffineTransform at = new AffineTransform();
-    at.rotate(radians, original.getWidth() / 2.0, original.getHeight() / 2.0);
-    BufferedImageOp op = new AffineTransformOp(at, AffineTransformOp.TYPE_BICUBIC);
-
-    RectangularShape r = op.getBounds2D(original);
-    int width = (int) Math.ceil(r.getWidth());
-    int height = (int) Math.ceil(r.getHeight());
-
-    // Real transform, now that we know the size of the new image and how to translate after we rotate
-    // to keep it centered
-    at = new AffineTransform();
-    at.rotate(radians, width / 2.0, height / 2.0);
-    at.translate((width - original.getWidth()) / 2.0,
-                 (height - original.getHeight()) / 2.0);
-    op = new AffineTransformOp(at, AffineTransformOp.TYPE_BICUBIC);
-
-    return op.filter(original, new BufferedImage(width, height, original.getType()));
-  }
-
-}
diff --git a/tests/common/TestResult.java b/tests/common/TestResult.java
deleted file mode 100644
index b689343..0000000
--- a/tests/common/TestResult.java
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright 2008 ZXing authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.google.zxing.common;
-
-/**
- * Encapsulates the result of one test over a batch of black-box images.
- */
-public final class TestRXingResult {
-
-  private final int mustPassCount;
-  private final int tryHarderCount;
-  private final int maxMisreads;
-  private final int maxTryHarderMisreads;
-  private final float rotation;
-
-  public TestRXingResult(int mustPassCount, int tryHarderCount, int maxMisreads, int maxTryHarderMisreads, float rotation) {
-    this.mustPassCount = mustPassCount;
-    this.tryHarderCount = tryHarderCount;
-    this.maxMisreads = maxMisreads;
-    this.maxTryHarderMisreads = maxTryHarderMisreads;
-    this.rotation = rotation;
-  }
-
-  public int getMustPassCount() {
-    return mustPassCount;
-  }
-
-  public int getTryHarderCount() {
-    return tryHarderCount;
-  }
-  
-  public int getMaxMisreads() {
-    return maxMisreads;
-  }
-  
-  public int getMaxTryHarderMisreads() {
-    return maxTryHarderMisreads;
-  }
-
-  public float getRotation() {
-    return rotation;
-  }
-
-}
diff --git a/tests/common/TestResult.rs b/tests/common/TestResult.rs
new file mode 100644
index 0000000..f99dfd4
--- /dev/null
+++ b/tests/common/TestResult.rs
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2008 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Encapsulates the result of one test over a batch of black-box images.
+ */
+pub struct TestRXingResult {
+    must_pass_count: u32,
+    try_harder_count: u32,
+    max_misreads: u32,
+    max_try_harder_misreads: u32,
+    rotation: f32,
+}
+
+impl TestRXingResult {
+    pub fn new(
+        must_pass_count: u32,
+        try_harder_count: u32,
+        max_misreads: u32,
+        max_try_harder_misreads: u32,
+        rotation: f32,
+    ) -> Self {
+        Self {
+            must_pass_count,
+            try_harder_count,
+            max_misreads,
+            max_try_harder_misreads,
+            rotation,
+        }
+    }
+
+    pub fn getMustPassCount(&self) -> u32 {
+        self.must_pass_count
+    }
+
+    pub fn getTryHarderCount(&self) -> u32 {
+        self.try_harder_count
+    }
+
+    pub fn getMaxMisreads(&self) -> u32 {
+        self.max_misreads
+    }
+
+    pub fn getMaxTryHarderMisreads(&self) -> u32 {
+        self.max_try_harder_misreads
+    }
+
+    pub fn getRotation(&self) -> f32 {
+        self.rotation
+    }
+}
diff --git a/tests/common/abstract_black_box_test_case.rs b/tests/common/abstract_black_box_test_case.rs
new file mode 100644
index 0000000..1a39ee8
--- /dev/null
+++ b/tests/common/abstract_black_box_test_case.rs
@@ -0,0 +1,545 @@
+/*
+ * Copyright 2008 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+use std::{
+    collections::HashMap,
+    fs::{read_dir, read_to_string},
+    path::{Path, PathBuf},
+};
+
+use rxing::{
+    common::HybridBinarizer, BarcodeFormat, BinaryBitmap, BufferedImageLuminanceSource,
+    DecodeHintType, DecodeHintValue, RXingResultMetadataType, RXingResultMetadataValue, Reader,
+};
+
+use super::TestRXingResult;
+
+use image;
+
+/**
+ * @author Sean Owen
+ * @author dswitkin@google.com (Daniel Switkin)
+ */
+pub struct AbstractBlackBoxTestCase {
+    test_base: Box<Path>,
+    barcode_reader: Box<dyn Reader>,
+    expected_format: BarcodeFormat,
+    test_rxing_results: Vec<TestRXingResult>,
+    hints: HashMap<DecodeHintType, DecodeHintValue>,
+}
+
+impl AbstractBlackBoxTestCase {
+    pub fn buildTestBase(testBasePathSuffix: &str) -> Box<Path> {
+        // A little workaround to prevent aggravation in my IDE
+        let test_base = Path::new(testBasePathSuffix);
+        // if !testBase.exists() {
+        //   // try starting with 'core' since the test base is often given as the project root
+        //   testBase = Paths.get("core").resolve(testBasePathSuffix);
+        // }
+        test_base.to_owned().into()
+    }
+
+    pub fn new(
+        test_base_path_suffix: &str,
+        barcode_reader: Box<dyn Reader>,
+        expected_format: BarcodeFormat,
+    ) -> Self {
+        Self {
+            test_base: Self::buildTestBase(test_base_path_suffix),
+            barcode_reader,
+            expected_format,
+            test_rxing_results: Vec::new(),
+            hints: HashMap::new(),
+        }
+    }
+
+    pub fn getTestBase(&self) -> &Box<Path> {
+        &self.test_base
+    }
+
+    pub fn addTest(&mut self, must_pass_count: u32, try_harder_count: u32, rotation: f32) {
+        self.addTestComplex(must_pass_count, try_harder_count, 0, 0, rotation);
+    }
+
+    pub fn addHint(&mut self, hint: DecodeHintType, value: DecodeHintValue) {
+        self.hints.insert(hint, value);
+    }
+
+    /**
+     * Adds a new test for the current directory of images.
+     *
+     * @param mustPassCount The number of images which must decode for the test to pass.
+     * @param tryHarderCount The number of images which must pass using the try harder flag.
+     * @param maxMisreads Maximum number of images which can fail due to successfully reading the wrong contents
+     * @param maxTryHarderMisreads Maximum number of images which can fail due to successfully
+     *                             reading the wrong contents using the try harder flag
+     * @param rotation The rotation in degrees clockwise to use for this test.
+     */
+    pub fn addTestComplex(
+        &mut self,
+        must_pass_count: u32,
+        try_harder_count: u32,
+        max_misreads: u32,
+        max_try_harder_misreads: u32,
+        rotation: f32,
+    ) {
+        self.test_rxing_results.push(TestRXingResult::new(
+            must_pass_count,
+            try_harder_count,
+            max_misreads,
+            max_try_harder_misreads,
+            rotation,
+        ));
+    }
+
+    pub fn getImageFiles(&self) -> Vec<PathBuf> {
+        assert!(
+            self.test_base.exists(),
+            "Please download and install test images, and run from the 'core' directory"
+        );
+        // let paths = Vec::new();
+        let path_search = read_dir(&self.test_base);
+        const possible_extensions: &str = "jpg,jpeg,gif,png,JPG,JPEG,GIF,PNG";
+
+        let paths = path_search
+            .unwrap()
+            .into_iter()
+            .filter(|r| r.is_ok()) // Get rid of Err variants for Result<DirEntry>
+            .map(|r| r.unwrap().path()) // This is safe, since we only have the Ok variants
+            .filter(|r| r.is_file()) // Filter out non-folders
+            .filter(|r| possible_extensions.contains(r.extension().unwrap().to_str().unwrap()))
+            // .map(|r| r.into_boxed_path())
+            .collect();
+
+        paths
+    }
+
+    pub fn getReader(&self) -> &Box<dyn Reader> {
+        &self.barcode_reader
+    }
+
+    pub fn testBlackBox(&self) {
+        assert!(!self.test_rxing_results.is_empty());
+
+        let image_files = self.getImageFiles();
+        let test_count = self.test_rxing_results.len();
+
+        let mut passed_counts = vec![0usize; test_count];
+        let mut misread_counts = vec![0usize; test_count];
+        let mut try_harder_counts = vec![0usize; test_count];
+        let mut try_harder_misread_counts = vec![0usize; test_count];
+
+        for testImage in &image_files {
+            // for (Path testImage : imageFiles) {
+            log::info(format!("Starting {}", testImage.to_string_lossy()));
+
+            let image = image::open(testImage).unwrap(); //ImageIO.read(testImage.toFile());
+
+            //let testImageFileName = testImage.getFileName().toString();
+            let file_base_name = testImage.file_stem().unwrap();
+            //let expectedTextFile = self.testBase.resolve(fileBaseName + ".txt");
+            let mut expected_text_file = PathBuf::from(testImage.clone());
+            expected_text_file.set_extension("txt");
+            let expected_text = if expected_text_file.exists() {
+                Self::read_file_as_string(expected_text_file)
+            } else {
+                let mut new_path = self.test_base.clone().to_path_buf();
+                new_path.push(file_base_name);
+                new_path.set_extension("bin");
+                //expectedTextFile = testBase.resolve(fileBaseName + ".bin");
+                assert!(new_path.exists());
+                Self::read_file_as_string(new_path)
+            }
+            .unwrap();
+
+            let mut expected_metadata_file: PathBuf = self.test_base.clone().to_path_buf();
+            expected_metadata_file.push(format!("{}.metadata", file_base_name.to_str().unwrap()));
+            expected_metadata_file.set_extension("txt");
+            let expectedMetadata_unfinished = if expected_metadata_file.exists() {
+                java_properties::read(
+                    std::fs::File::open(expected_metadata_file)
+                        .expect("file exists, we already know that"),
+                )
+                .expect("valid java properties file")
+                // try (BufferedReader reader = Files.newBufferedReader(expectedMetadataFile, StandardCharsets.UTF_8)) {
+                //   expectedMetadata.load(reader);
+                // }
+            } else {
+                HashMap::new()
+            };
+            let expected_metadata = HashMap::new();
+            for (k, v) in expectedMetadata_unfinished {
+                let new_k = RXingResultMetadataType::from(k);
+                let new_v = match new_k {
+                    RXingResultMetadataType::OTHER => RXingResultMetadataValue::OTHER(v),
+                    RXingResultMetadataType::ORIENTATION => {
+                        RXingResultMetadataValue::Orientation(v.parse().unwrap_or_default())
+                    }
+                    RXingResultMetadataType::BYTE_SEGMENTS => {
+                        RXingResultMetadataValue::ByteSegments(v.into_bytes())
+                    }
+                    RXingResultMetadataType::ERROR_CORRECTION_LEVEL => {
+                        RXingResultMetadataValue::ErrorCorrectionLevel(v)
+                    }
+                    RXingResultMetadataType::ISSUE_NUMBER => {
+                        RXingResultMetadataValue::IssueNumber(v.parse().unwrap_or_default())
+                    }
+                    RXingResultMetadataType::SUGGESTED_PRICE => {
+                        RXingResultMetadataValue::SuggestedPrice(v)
+                    }
+                    RXingResultMetadataType::POSSIBLE_COUNTRY => {
+                        RXingResultMetadataValue::PossibleCountry(v)
+                    }
+                    RXingResultMetadataType::UPC_EAN_EXTENSION => {
+                        RXingResultMetadataValue::UpcEanExtension(v)
+                    }
+                    RXingResultMetadataType::PDF417_EXTRA_METADATA => {
+                        RXingResultMetadataValue::Pdf417ExtraMetadata(v)
+                    }
+                    RXingResultMetadataType::STRUCTURED_APPEND_SEQUENCE => {
+                        RXingResultMetadataValue::StructuredAppendSequence(
+                            v.parse().unwrap_or_default(),
+                        )
+                    }
+                    RXingResultMetadataType::STRUCTURED_APPEND_PARITY => {
+                        RXingResultMetadataValue::StructuredAppendParity(
+                            v.parse().unwrap_or_default(),
+                        )
+                    }
+                    RXingResultMetadataType::SYMBOLOGY_IDENTIFIER => {
+                        RXingResultMetadataValue::SymbologyIdentifier(v)
+                    }
+                };
+            }
+
+            for x in 0..test_count {
+                // for (int x = 0; x < testCount; x++) {
+                let rotation = self.test_rxing_results.get(x).unwrap().getRotation();
+                let rotated_image = Self::rotate_image(&image, rotation);
+                let source = BufferedImageLuminanceSource::new(rotated_image);
+                let bitmap = BinaryBitmap::new(Box::new(HybridBinarizer::new(Box::new(source))));
+                if let Ok(decoded) =
+                    self.decode(&bitmap, rotation, &expected_text, &expected_metadata, false)
+                {
+                    if decoded {
+                        passed_counts[x] += 1;
+                    } else {
+                        misread_counts[x] += 1;
+                    }
+                } else {
+                    log::fine(format!("could not read at rotation {}", rotation));
+                }
+                // try {
+                //   if (decode(bitmap, rotation, expectedText, expectedMetadata, false)) {
+                //     passedCounts[x]+=1;
+                //   } else {
+                //     misreadCounts[x]+=1;
+                //   }
+                // } catch (ReaderException ignored) {
+                //   log::fine(format!("could not read at rotation {}", rotation));
+                // }
+                if let Ok(decoded) =
+                    self.decode(&bitmap, rotation, &expected_text, &expected_metadata, true)
+                {
+                    if decoded {
+                        try_harder_counts[x] += 1;
+                    } else {
+                        try_harder_misread_counts[x] += 1;
+                    }
+                } else {
+                    log::fine(format!("could not read at rotation {} w/TH", rotation));
+                }
+                // try {
+                //   if (decode(bitmap, rotation, expectedText, expectedMetadata, true)) {
+                //     tryHarderCounts[x]+=1;
+                //   } else {
+                //     tryHarderMisreadCounts[x]+=1;
+                //   }
+                // } catch (ReaderException ignored) {
+                //   log::fine(format!("could not read at rotation {} w/TH", rotation));
+                // }
+            }
+        }
+
+        // Print the results of all tests first
+        let mut total_found = 0;
+        let mut total_must_pass = 0;
+        let mut total_misread = 0;
+        let mut total_max_misread = 0;
+
+        for x in 0..self.test_rxing_results.len() {
+            // for (int x = 0; x < testRXingResults.size(); x++) {
+            let test_rxing_result = self.test_rxing_results.get(x).unwrap();
+            log::info(format!(
+                "Rotation {} degrees:",
+                test_rxing_result.getRotation()
+            ));
+            log::info(format!(
+                " {} of {} images passed ({} required)",
+                passed_counts[x],
+                image_files.len(),
+                test_rxing_result.getMustPassCount()
+            ));
+            let mut failed = image_files.len() - passed_counts[x];
+            log::info(format!(
+                " {} failed due to misreads, {} not detected",
+                misread_counts[x],
+                failed - misread_counts[x]
+            ));
+            log::info(format!(
+                " {} of {} images passed with try harder ({} required)",
+                try_harder_counts[x],
+                image_files.len(),
+                test_rxing_result.getTryHarderCount()
+            ));
+            failed = image_files.len() - try_harder_counts[x];
+            log::info(format!(
+                " {} failed due to misreads, {} not detected",
+                try_harder_misread_counts[x],
+                failed - try_harder_misread_counts[x]
+            ));
+            total_found += passed_counts[x] + try_harder_counts[x];
+            total_must_pass +=
+                test_rxing_result.getMustPassCount() + test_rxing_result.getTryHarderCount();
+            total_misread += misread_counts[x] + try_harder_misread_counts[x];
+            total_max_misread +=
+                test_rxing_result.getMaxMisreads() + test_rxing_result.getMaxTryHarderMisreads();
+        }
+
+        let totalTests = image_files.len() * test_count * 2;
+        log::info(format!(
+            "Decoded {} images out of {} ({}, {} required)",
+            total_found,
+            totalTests,
+            total_found * 100 / totalTests,
+            total_must_pass
+        ));
+        if total_found > total_must_pass as usize {
+            log::warning(format!(
+                "+++ Test too lax by {} images",
+                total_found - total_must_pass as usize
+            ));
+        } else if total_found < total_must_pass as usize {
+            log::warning(format!(
+                "--- Test failed by {} images",
+                total_must_pass as usize - total_found
+            ));
+        }
+
+        if total_misread < total_max_misread as usize {
+            log::warning(format!(
+                "+++ Test expects too many misreads by {} images",
+                total_max_misread as usize - total_misread
+            ));
+        } else if total_misread > total_max_misread as usize {
+            log::warning(format!(
+                "--- Test had too many misreads by {} images",
+                total_misread - total_max_misread as usize
+            ));
+        }
+
+        // Then run through again and assert if any failed
+        for x in 0..test_count {
+            // for (int x = 0; x < testCount; x++) {
+            let testRXingResult = self.test_rxing_results.get(x).unwrap();
+            let label = format!(
+                "Rotation {} degrees: Too many images failed",
+                testRXingResult.getRotation()
+            );
+            assert!(
+                passed_counts[x] >= testRXingResult.getMustPassCount() as usize,
+                "{}",
+                label
+            );
+            assert!(
+                try_harder_counts[x] >= testRXingResult.getTryHarderCount() as usize,
+                "Try harder, {}",
+                label,
+            );
+            let label = format!(
+                "Rotation {} degrees: Too many images misread",
+                testRXingResult.getRotation()
+            );
+            assert!(
+                misread_counts[x] <= testRXingResult.getMaxMisreads() as usize,
+                "{}",
+                label
+            );
+            assert!(
+                try_harder_misread_counts[x] <= testRXingResult.getMaxTryHarderMisreads() as usize,
+                "Try harder, {}",
+                label
+            );
+        }
+    }
+
+    fn decode(
+        &self,
+        source: &BinaryBitmap,
+        rotation: f32,
+        expected_text: &str,
+        expected_metadata: &HashMap<RXingResultMetadataType, RXingResultMetadataValue>,
+        try_harder: bool,
+    ) -> Result<bool, rxing::Exceptions> {
+        let suffix = format!(
+            " ({}rotation: {})",
+            if try_harder { "try harder, " } else { "" },
+            rotation
+        );
+
+        let mut hints = self.hints.clone();
+        if try_harder {
+            hints.insert(DecodeHintType::TRY_HARDER, DecodeHintValue::TryHarder(true));
+            // hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
+        }
+
+        // Try in 'pure' mode mostly to exercise PURE_BARCODE code paths for exceptions;
+        // not expected to pass, generally
+        let mut result = None;
+        let mut pure_hints = HashMap::new();
+        pure_hints.insert(
+            DecodeHintType::PURE_BARCODE,
+            DecodeHintValue::PureBarcode(true),
+        );
+        result = if let Ok(res) = self.barcode_reader.decode_with_hints(source, &pure_hints) {
+            Some(res)
+        } else {
+            None
+        };
+
+        if result.is_none() {
+            result = Some(self.barcode_reader.decode_with_hints(source, &hints)?)
+        }
+
+        let result = result.unwrap();
+
+        if &self.expected_format != result.getBarcodeFormat() {
+            log::info(format!(
+                "Format mismatch: expected '{:?}' but got '{:?}'{}",
+                self.expected_format,
+                result.getBarcodeFormat(),
+                suffix
+            ));
+            return Ok(false);
+        }
+
+        let result_text = result.getText();
+        if !(expected_text == result_text) {
+            log::info(format!(
+                "Content mismatch: expected '{}' but got '{}'{}",
+                expected_text, result_text, suffix
+            ));
+            return Ok(false);
+        }
+
+        let result_metadata = result.getRXingResultMetadata();
+        for (key, value) in expected_metadata {
+            // let key = RXingResultMetadataType.valueOf(metadatum.getKey().toString());
+            // Object expectedValue = metadatum.getValue();
+            let actual_value = result_metadata.get(key);
+            if actual_value.is_none() || !(value == actual_value.unwrap()) {
+                log::info(format!(
+                    "Metadata mismatch for key '{:?}': expected '{:?}' but got '{:?}'",
+                    key, value, actual_value
+                ));
+                return Ok(false);
+            }
+        }
+
+        return Ok(true);
+    }
+
+    fn read_file_as_string(file: PathBuf) -> Result<String, std::io::Error> {
+        let string_contents = read_to_string(&file)?; //new String(Files.readAllBytes(file), charset);
+        if string_contents.ends_with("\n") {
+            log::info(format!("String contents of file {} end with a newline. This may not be intended and cause a test failure",file.to_string_lossy()));
+        }
+        Ok(string_contents)
+    }
+
+    fn rotate_image(original: &image::DynamicImage, degrees: f32) -> image::DynamicImage {
+        if degrees == 0.0 {
+            return original.clone();
+        }
+
+        // switch (original.getType()) {
+        //   case BufferedImage.TYPE_BYTE_INDEXED:
+        //   case BufferedImage.TYPE_BYTE_BINARY:
+        //     BufferedImage argb = new BufferedImage(original.getWidth(),
+        //                                            original.getHeight(),
+        //                                            BufferedImage.TYPE_INT_ARGB);
+        //     Graphics g = argb.createGraphics();
+        //     g.drawImage(original, 0, 0, null);
+        //     g.dispose();
+        //     original = argb;
+        //     break;
+        // }
+
+        let radians = degrees.to_radians();
+
+        {
+            use image::DynamicImage;
+            use image::Luma;
+            use imageproc::geometric_transformations::*;
+
+            let i = rotate_about_center(
+                &original.to_luma8(),
+                radians,
+                Interpolation::Nearest,
+                Luma([255; 1]),
+            );
+
+            DynamicImage::from(i)
+        }
+
+        // // Transform simply to find out the new bounding box (don't actually run the image through it)
+        // AffineTransform at = new AffineTransform();
+        // at.rotate(radians, original.getWidth() / 2.0, original.getHeight() / 2.0);
+        // BufferedImageOp op = new AffineTransformOp(at, AffineTransformOp.TYPE_BICUBIC);
+
+        // RectangularShape r = op.getBounds2D(original);
+        // int width = (int) Math.ceil(r.getWidth());
+        // int height = (int) Math.ceil(r.getHeight());
+
+        // // Real transform, now that we know the size of the new image and how to translate after we rotate
+        // // to keep it centered
+        // at = new AffineTransform();
+        // at.rotate(radians, width / 2.0, height / 2.0);
+        // at.translate((width - original.getWidth()) / 2.0,
+        //              (height - original.getHeight()) / 2.0);
+        // op = new AffineTransformOp(at, AffineTransformOp.TYPE_BICUBIC);
+
+        // return op.filter(original, new BufferedImage(width, height, original.getType()));
+    }
+}
+
+mod log {
+    pub fn info(data: String) {
+        prn("INFO", data)
+    }
+
+    pub fn fine(data: String) {
+        prn("FINE", data)
+    }
+
+    pub fn warning(data: String) {
+        prn("WARN", data)
+    }
+
+    fn prn(level: &str, data: String) {
+        println!("{} :: {}", level, data)
+    }
+}
diff --git a/tests/common/mod.rs b/tests/common/mod.rs
new file mode 100644
index 0000000..33fae6d
--- /dev/null
+++ b/tests/common/mod.rs
@@ -0,0 +1,5 @@
+mod TestResult;
+mod abstract_black_box_test_case;
+
+pub use TestResult::*;
+pub use abstract_black_box_test_case::*;
\ No newline at end of file