Teste unitário para a classe InputBitStream

Author: tcpassos

src/main/java/core/bitstream/InputBitStream.java

@@ -5,7 +5,7 @@
 import java.security.InvalidParameterException;
 
 /**
- * Classe com metodos para leitura de uma stream de bits
+ * Classe com metodos para leitura de uma stream de bits.
  */
 public class InputBitStream {
 

src/test/java/core/bitstream/InputBitStreamTest.java

@@ -0,0 +1,67 @@
+package core.bitstream;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import static org.junit.jupiter.api.Assertions.*;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class InputBitStreamTest {
+    
+    private InputStream reader;
+    private InputBitStream bstream;
+    
+    @BeforeEach
+    public void setUp() throws IOException {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        // 0000 0001 0000 0011 0000 0111 0000 1111 0001 1111
+        baos.write(1);
+        baos.write(3);
+        baos.write(7);
+        baos.write(15);
+        baos.write(31);
+        reader = new ByteArrayInputStream(baos.toByteArray());
+        bstream = new InputBitStream(reader);
+    }
+    
+    @Test
+    public void countWhileTest() throws IOException {
+        // 1
+        assertEquals(7, bstream.countWhile(false));
+        assertEquals(0, bstream.countWhile(false));
+        assertEquals(1, bstream.countWhile(true));
+        assertEquals(0, bstream.countWhile(true));
+        // 3
+        assertEquals(6, bstream.countWhile(false));
+        assertEquals(0, bstream.countWhile(false));
+        assertEquals(2, bstream.countWhile(true));
+        assertEquals(0, bstream.countWhile(true));
+        // 7
+        assertEquals(5, bstream.countWhile(false));
+        assertEquals(0, bstream.countWhile(false));
+        assertEquals(3, bstream.countWhile(true));
+        assertEquals(0, bstream.countWhile(true));
+        // 15
+        assertEquals(4, bstream.countWhile(false));
+        assertEquals(0, bstream.countWhile(false));
+        assertEquals(4, bstream.countWhile(true));
+        assertEquals(0, bstream.countWhile(true));
+        // 31
+        assertEquals(3, bstream.countWhile(false));
+        assertEquals(0, bstream.countWhile(false));
+        assertEquals(5, bstream.countWhile(true));
+        assertEquals(0, bstream.countWhile(true));
+    }
+    
+    @Test
+    public void nextTest() throws IOException {
+        assertEquals(0, bstream.next(0));
+        assertEquals(0, bstream.next(4));
+        assertEquals(1, bstream.next(4));
+        assertEquals(3, bstream.next(8));
+        assertEquals(7, bstream.next(8));
+        assertEquals(0, bstream.next(0));
+    }
+}