copy over tests

src/common/BitSourceTestCase.java

@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+
+package com.google.zxing.common;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author Sean Owen
+ */
+public final class BitSourceTestCase extends Assert {
+
+  @Test
+  public void testSource() {
+    byte[] bytes = {(byte) 1, (byte) 2, (byte) 3, (byte) 4, (byte) 5};
+    BitSource source = new BitSource(bytes);
+    assertEquals(40, source.available());
+    assertEquals(0, source.readBits(1));
+    assertEquals(39, source.available());
+    assertEquals(0, source.readBits(6));
+    assertEquals(33, source.available());
+    assertEquals(1, source.readBits(1));
+    assertEquals(32, source.available());
+    assertEquals(2, source.readBits(8));
+    assertEquals(24, source.available());
+    assertEquals(12, source.readBits(10));
+    assertEquals(14, source.available());
+    assertEquals(16, source.readBits(8));
+    assertEquals(6, source.available());
+    assertEquals(5, source.readBits(6));
+    assertEquals(0, source.available());
+  }
+
+}