port and pass formatinformation tests

src/qrcode/decoder/FormatInformationTestCase.rs

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2007 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 crate::qrcode::decoder::{FormatInformation, ErrorCorrectionLevel};
+
+/**
+ * @author Sean Owen
+ */
+
+
+  const MASKED_TEST_FORMAT_INFO : u32 = 0x2BED;
+   const UNMASKED_TEST_FORMAT_INFO : u32= MASKED_TEST_FORMAT_INFO ^ 0x5412;
+
+  #[test]
+  fn testBitsDiffering() {
+    assert_eq!(0, FormatInformation::numBitsDiffering(1, 1));
+    assert_eq!(1, FormatInformation::numBitsDiffering(0, 2));
+    assert_eq!(2, FormatInformation::numBitsDiffering(1, 2));
+    assert_eq!(32, FormatInformation::numBitsDiffering(-1i32 as u32, 0));
+  }
+
+  #[test]
+  fn testDecode() {
+    // Normal case
+    let expected =
+        FormatInformation::decodeFormatInformation(MASKED_TEST_FORMAT_INFO, MASKED_TEST_FORMAT_INFO);
+    assert!(expected.is_some());
+    let expected = expected.unwrap();
+    assert_eq!( 0x07, expected.getDataMask());
+    assert_eq!(ErrorCorrectionLevel::Q, expected.getErrorCorrectionLevel());
+    // where the code forgot the mask!
+    assert_eq!(expected,
+                 FormatInformation::decodeFormatInformation(UNMASKED_TEST_FORMAT_INFO, MASKED_TEST_FORMAT_INFO).expect("return"));
+  }
+
+  #[test]
+  fn testDecodeWithBitDifference() {
+    let expected =
+        FormatInformation::decodeFormatInformation(MASKED_TEST_FORMAT_INFO, MASKED_TEST_FORMAT_INFO).unwrap();
+    // 1,2,3,4 bits difference
+    assert_eq!(expected, FormatInformation::decodeFormatInformation(
+        MASKED_TEST_FORMAT_INFO ^ 0x01, MASKED_TEST_FORMAT_INFO ^ 0x01).expect("return"));
+    assert_eq!(expected, FormatInformation::decodeFormatInformation(
+        MASKED_TEST_FORMAT_INFO ^ 0x03, MASKED_TEST_FORMAT_INFO ^ 0x03).expect("return"));
+    assert_eq!(expected, FormatInformation::decodeFormatInformation(
+        MASKED_TEST_FORMAT_INFO ^ 0x07, MASKED_TEST_FORMAT_INFO ^ 0x07).expect("return"));
+    assert!(FormatInformation::decodeFormatInformation(
+        MASKED_TEST_FORMAT_INFO ^ 0x0F, MASKED_TEST_FORMAT_INFO ^ 0x0F).is_none());
+  }
+
+  #[test]
+  fn testDecodeWithMisread() {
+    let expected =
+        FormatInformation::decodeFormatInformation(MASKED_TEST_FORMAT_INFO, MASKED_TEST_FORMAT_INFO).unwrap();
+    assert_eq!(expected, FormatInformation::decodeFormatInformation(
+        MASKED_TEST_FORMAT_INFO ^ 0x03, MASKED_TEST_FORMAT_INFO ^ 0x0F).unwrap());
+  }