diff --git a/src/qrcode/encoder/BitVectorTestCase.java b/src/qrcode/encoder/BitVectorTestCase.java
deleted file mode 100644
index c67e84c..0000000
--- a/src/qrcode/encoder/BitVectorTestCase.java
+++ /dev/null
@@ -1,180 +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.qrcode.encoder;
-
-import com.google.zxing.common.BitArray;
-import org.junit.Assert;
-import org.junit.Test;
-
-/**
- * @author satorux@google.com (Satoru Takabayashi) - creator
- * @author dswitkin@google.com (Daniel Switkin) - ported from C++
- */
-public final class BitVectorTestCase extends Assert {
-
-  private static long getUnsignedInt(BitArray v) {
-    long result = 0L;
-    for (int i = 0, offset = 0; i < 32; i++) {
-      if (v.get(offset + i)) {
-        result |= 1L << (31 - i);
-      }
-    }
-    return result;
-  }
-
-  @Test
-  public void testAppendBit() {
-    BitArray v = new BitArray();
-    assertEquals(0, v.getSizeInBytes());
-    // 1
-    v.appendBit(true);
-    assertEquals(1, v.getSize());
-    assertEquals(0x80000000L, getUnsignedInt(v));
-    // 10
-    v.appendBit(false);
-    assertEquals(2, v.getSize());
-    assertEquals(0x80000000L, getUnsignedInt(v));
-    // 101
-    v.appendBit(true);
-    assertEquals(3, v.getSize());
-    assertEquals(0xa0000000L, getUnsignedInt(v));
-    // 1010
-    v.appendBit(false);
-    assertEquals(4, v.getSize());
-    assertEquals(0xa0000000L, getUnsignedInt(v));
-    // 10101
-    v.appendBit(true);
-    assertEquals(5, v.getSize());
-    assertEquals(0xa8000000L, getUnsignedInt(v));
-    // 101010
-    v.appendBit(false);
-    assertEquals(6, v.getSize());
-    assertEquals(0xa8000000L, getUnsignedInt(v));
-    // 1010101
-    v.appendBit(true);
-    assertEquals(7, v.getSize());
-    assertEquals(0xaa000000L, getUnsignedInt(v));
-    // 10101010
-    v.appendBit(false);
-    assertEquals(8, v.getSize());
-    assertEquals(0xaa000000L, getUnsignedInt(v));
-    // 10101010 1
-    v.appendBit(true);
-    assertEquals(9, v.getSize());
-    assertEquals(0xaa800000L, getUnsignedInt(v));
-    // 10101010 10
-    v.appendBit(false);
-    assertEquals(10, v.getSize());
-    assertEquals(0xaa800000L, getUnsignedInt(v));
-  }
-
-  @Test
-  public void testAppendBits() {
-    BitArray v = new BitArray();
-    v.appendBits(0x1, 1);
-    assertEquals(1, v.getSize());
-    assertEquals(0x80000000L, getUnsignedInt(v));
-    v = new BitArray();
-    v.appendBits(0xff, 8);
-    assertEquals(8, v.getSize());
-    assertEquals(0xff000000L, getUnsignedInt(v));
-    v = new BitArray();
-    v.appendBits(0xff7, 12);
-    assertEquals(12, v.getSize());
-    assertEquals(0xff700000L, getUnsignedInt(v));
-  }
-
-  @Test
-  public void testNumBytes() {
-    BitArray v = new BitArray();
-    assertEquals(0, v.getSizeInBytes());
-    v.appendBit(false);
-    // 1 bit was added in the vector, so 1 byte should be consumed.
-    assertEquals(1, v.getSizeInBytes());
-    v.appendBits(0, 7);
-    assertEquals(1, v.getSizeInBytes());
-    v.appendBits(0, 8);
-    assertEquals(2, v.getSizeInBytes());
-    v.appendBits(0, 1);
-    // We now have 17 bits, so 3 bytes should be consumed.
-    assertEquals(3, v.getSizeInBytes());
-  }
-
-  @Test
-  public void testAppendBitVector() {
-    BitArray v1 = new BitArray();
-    v1.appendBits(0xbe, 8);
-    BitArray v2 = new BitArray();
-    v2.appendBits(0xef, 8);
-    v1.appendBitArray(v2);
-    // beef = 1011 1110 1110 1111
-    assertEquals(" X.XXXXX. XXX.XXXX", v1.toString());
-  }
-
-  @Test
-  public void testXOR() {
-    BitArray v1 = new BitArray();
-    v1.appendBits(0x5555aaaa, 32);
-    BitArray v2 = new BitArray();
-    v2.appendBits(0xaaaa5555, 32);
-    v1.xor(v2);
-    assertEquals(0xffffffffL, getUnsignedInt(v1));
-  }
-
-  @Test
-  public void testXOR2() {
-    BitArray v1 = new BitArray();
-    v1.appendBits(0x2a, 7);  // 010 1010
-    BitArray v2 = new BitArray();
-    v2.appendBits(0x55, 7);  // 101 0101
-    v1.xor(v2);
-    assertEquals(0xfe000000L, getUnsignedInt(v1));  // 1111 1110
-  }
-
-  @Test
-  public void testAt() {
-    BitArray v = new BitArray();
-    v.appendBits(0xdead, 16);  // 1101 1110 1010 1101
-    assertTrue(v.get(0));
-    assertTrue(v.get(1));
-    assertFalse(v.get(2));
-    assertTrue(v.get(3));
-
-    assertTrue(v.get(4));
-    assertTrue(v.get(5));
-    assertTrue(v.get(6));
-    assertFalse(v.get(7));
-
-    assertTrue(v.get(8));
-    assertFalse(v.get(9));
-    assertTrue(v.get(10));
-    assertFalse(v.get(11));
-
-    assertTrue(v.get(12));
-    assertTrue(v.get(13));
-    assertFalse(v.get(14));
-    assertTrue(v.get(15));
-  }
-
-  @Test
-  public void testToString() {
-    BitArray v = new BitArray();
-    v.appendBits(0xdead, 16);  // 1101 1110 1010 1101
-    assertEquals(" XX.XXXX. X.X.XX.X", v.toString());
-  }
-
-}
diff --git a/src/qrcode/encoder/BitVectorTestCase.rs b/src/qrcode/encoder/BitVectorTestCase.rs
new file mode 100644
index 0000000..27efc8b
--- /dev/null
+++ b/src/qrcode/encoder/BitVectorTestCase.rs
@@ -0,0 +1,175 @@
+/*
+ * 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 crate::common::BitArray;
+
+/**
+ * @author satorux@google.com (Satoru Takabayashi) - creator
+ * @author dswitkin@google.com (Daniel Switkin) - ported from C++
+ */
+
+fn getUnsignedInt(v: &BitArray) -> u64 {
+    let mut result = 0u64;
+    const offset: usize = 0;
+    for i in 0..32 {
+        // for (int i = 0, offset = 0; i < 32; i++) {
+        if v.get(offset + i) {
+            result |= 1 << (31 - i);
+        }
+    }
+    result
+}
+
+#[test]
+fn testAppendBit() {
+    let mut v = BitArray::new();
+    assert_eq!(0, v.getSizeInBytes());
+    // 1
+    v.appendBit(true);
+    assert_eq!(1, v.getSize());
+    assert_eq!(0x80000000, getUnsignedInt(&v));
+    // 10
+    v.appendBit(false);
+    assert_eq!(2, v.getSize());
+    assert_eq!(0x80000000, getUnsignedInt(&v));
+    // 101
+    v.appendBit(true);
+    assert_eq!(3, v.getSize());
+    assert_eq!(0xa0000000, getUnsignedInt(&v));
+    // 1010
+    v.appendBit(false);
+    assert_eq!(4, v.getSize());
+    assert_eq!(0xa0000000, getUnsignedInt(&v));
+    // 10101
+    v.appendBit(true);
+    assert_eq!(5, v.getSize());
+    assert_eq!(0xa8000000, getUnsignedInt(&v));
+    // 101010
+    v.appendBit(false);
+    assert_eq!(6, v.getSize());
+    assert_eq!(0xa8000000, getUnsignedInt(&v));
+    // 1010101
+    v.appendBit(true);
+    assert_eq!(7, v.getSize());
+    assert_eq!(0xaa000000, getUnsignedInt(&v));
+    // 10101010
+    v.appendBit(false);
+    assert_eq!(8, v.getSize());
+    assert_eq!(0xaa000000, getUnsignedInt(&v));
+    // 10101010 1
+    v.appendBit(true);
+    assert_eq!(9, v.getSize());
+    assert_eq!(0xaa800000, getUnsignedInt(&v));
+    // 10101010 10
+    v.appendBit(false);
+    assert_eq!(10, v.getSize());
+    assert_eq!(0xaa800000, getUnsignedInt(&v));
+}
+
+#[test]
+fn testAppendBits() {
+    let mut v = BitArray::new();
+    v.appendBits(0x1, 1);
+    assert_eq!(1, v.getSize());
+    assert_eq!(0x80000000, getUnsignedInt(&v));
+    let mut v = BitArray::new();
+    v.appendBits(0xff, 8);
+    assert_eq!(8, v.getSize());
+    assert_eq!(0xff000000, getUnsignedInt(&v));
+    let mut v = BitArray::new();
+    v.appendBits(0xff7, 12);
+    assert_eq!(12, v.getSize());
+    assert_eq!(0xff700000, getUnsignedInt(&v));
+}
+
+#[test]
+fn testNumBytes() {
+    let mut v = BitArray::new();
+    assert_eq!(0, v.getSizeInBytes());
+    v.appendBit(false);
+    // 1 bit was added in the vector, so 1 byte should be consumed.
+    assert_eq!(1, v.getSizeInBytes());
+    v.appendBits(0, 7);
+    assert_eq!(1, v.getSizeInBytes());
+    v.appendBits(0, 8);
+    assert_eq!(2, v.getSizeInBytes());
+    v.appendBits(0, 1);
+    // We now have 17 bits, so 3 bytes should be consumed.
+    assert_eq!(3, v.getSizeInBytes());
+}
+
+#[test]
+fn testAppendBitVector() {
+    let mut v1 = BitArray::new();
+    v1.appendBits(0xbe, 8);
+    let mut v2 = BitArray::new();
+    v2.appendBits(0xef, 8);
+    v1.appendBitArray(v2);
+    // beef = 1011 1110 1110 1111
+    assert_eq!(" X.XXXXX. XXX.XXXX", v1.to_string());
+}
+
+#[test]
+fn testXOR() {
+    let mut v1 = BitArray::new();
+    v1.appendBits(0x5555aaaa, 32);
+    let mut v2 = BitArray::new();
+    v2.appendBits(0xaaaa5555, 32);
+    v1.xor(&v2);
+    assert_eq!(0xffffffff, getUnsignedInt(&v1));
+}
+
+#[test]
+fn testXOR2() {
+    let mut v1 = BitArray::new();
+    v1.appendBits(0x2a, 7); // 010 1010
+    let mut v2 = BitArray::new();
+    v2.appendBits(0x55, 7); // 101 0101
+    v1.xor(&v2);
+    assert_eq!(0xfe000000, getUnsignedInt(&v1)); // 1111 1110
+}
+
+#[test]
+fn testAt() {
+    let mut v = BitArray::new();
+    v.appendBits(0xdead, 16); // 1101 1110 1010 1101
+    assert!(v.get(0));
+    assert!(v.get(1));
+    assert!(!v.get(2));
+    assert!(v.get(3));
+
+    assert!(v.get(4));
+    assert!(v.get(5));
+    assert!(v.get(6));
+    assert!(!v.get(7));
+
+    assert!(v.get(8));
+    assert!(!v.get(9));
+    assert!(v.get(10));
+    assert!(!v.get(11));
+
+    assert!(v.get(12));
+    assert!(v.get(13));
+    assert!(!v.get(14));
+    assert!(v.get(15));
+}
+
+#[test]
+fn testToString() {
+    let mut v = BitArray::new();
+    v.appendBits(0xdead, 16); // 1101 1110 1010 1101
+    assert_eq!(" XX.XXXX. X.X.XX.X", v.to_string());
+}
diff --git a/src/qrcode/encoder/mod.rs b/src/qrcode/encoder/mod.rs
index bb13369..3337fcc 100644
--- a/src/qrcode/encoder/mod.rs
+++ b/src/qrcode/encoder/mod.rs
@@ -5,4 +5,6 @@ pub use qr_code::*;
 pub use byte_matrix::*;
 
 #[cfg(test)]
-mod QRCodeTestCase;
\ No newline at end of file
+mod QRCodeTestCase;
+#[cfg(test)]
+mod BitVectorTestCase;
\ No newline at end of file