1 files changed, 99 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/compress/compressors/ZTestCase.java b/src/test/java/org/apache/commons/compress/compressors/ZTestCase.java
new file mode 100644
index 000000000..b80a4a088
--- /dev/null
+++ b/src/test/java/org/apache/commons/compress/compressors/ZTestCase.java
@@ -0,0 +1,99 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.commons.compress.compressors;
+
+import static org.junit.Assert.*;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.apache.commons.compress.AbstractTestCase;
+import org.apache.commons.compress.compressors.z.ZCompressorInputStream;
+import org.apache.commons.compress.utils.IOUtils;
+import org.junit.Test;
+
+public final class ZTestCase extends AbstractTestCase {
+
+    @Test
+    public void testZUnarchive() throws Exception {
+        testUnarchive(new StreamWrapper<CompressorInputStream>() {
+            @Override
+            public CompressorInputStream wrap(final InputStream is) throws IOException {
+                return new ZCompressorInputStream(is);
+            }
+        });
+    }
+
+    @Test
+    public void testZUnarchiveViaFactory() throws Exception {
+        testUnarchive(new StreamWrapper<CompressorInputStream>() {
+            @Override
+            public CompressorInputStream wrap(final InputStream is) throws Exception {
+                return new CompressorStreamFactory()
+                    .createCompressorInputStream(CompressorStreamFactory.Z, is);
+            }
+        });
+    }
+
+    @Test
+    public void testZUnarchiveViaAutoDetection() throws Exception {
+        testUnarchive(new StreamWrapper<CompressorInputStream>() {
+            @Override
+            public CompressorInputStream wrap(final InputStream is) throws Exception {
+                return new CompressorStreamFactory()
+                    .createCompressorInputStream(new BufferedInputStream(is));
+            }
+        });
+    }
+
+    @Test
+    public void testMatches() throws Exception {
+        assertFalse(ZCompressorInputStream.matches(new byte[] { 1, 2, 3, 4 }, 4));
+        assertFalse(ZCompressorInputStream.matches(new byte[] { 0x1f, 2, 3, 4 }, 4));
+        assertFalse(ZCompressorInputStream.matches(new byte[] { 1, (byte)0x9d, 3, 4 },
+                                                   4));
+        assertFalse(ZCompressorInputStream.matches(new byte[] { 0x1f, (byte) 0x9d, 3, 4 },
+                                                   3));
+        assertTrue(ZCompressorInputStream.matches(new byte[] { 0x1f, (byte) 0x9d, 3, 4 },
+                                                  4));
+    }
+
+    private void testUnarchive(final StreamWrapper<CompressorInputStream> wrapper) throws Exception {
+        final File input = getFile("bla.tar.Z");
+        final File output = new File(dir, "bla.tar");
+        try (InputStream is = new FileInputStream(input)) {
+            final InputStream in = wrapper.wrap(is);
+            FileOutputStream out = null;
+            try {
+                out = new FileOutputStream(output);
+                IOUtils.copy(in, out);
+            } finally {
+                if (out != null) {
+                    out.close();
+                }
+                in.close();
+            }
+        }
+    }
+
+}