Add a hook test

Change-Id: I8059ef299aeb43373f4f45274030886171a20a8e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.java7.test/src/org/eclipse/jgit/util/HookTest.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2014 Matthias Sohn <matthias.sohn@sap.com>
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.eclipse.jgit.util;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintStream;
+
+import org.eclipse.jgit.junit.JGitTestUtil;
+import org.eclipse.jgit.junit.RepositoryTestCase;
+import org.junit.Assume;
+import org.junit.Test;
+
+public class HookTest extends RepositoryTestCase {
+
+	@Test
+	public void testFindHook() throws Exception {
+		assumeSupportedPlatform();
+
+		Hook h = Hook.PRE_COMMIT;
+		assertNull("no hook should be installed", FS.DETECTED.findHook(db, h));
+		File hookFile = writeHookFile(h.getName(),
+				"#!/bin/bash\necho \"test $1 $2\"");
+		assertEquals("exected to find pre-commit hook", hookFile,
+				FS.DETECTED.findHook(db, h));
+	}
+
+	@Test
+	public void testRunHook() throws Exception {
+		assumeSupportedPlatform();
+
+		Hook h = Hook.PRE_COMMIT;
+		writeHookFile(
+				h.getName(),
+				"#!/bin/sh\necho \"test $1 $2\"\nread INPUT\necho $INPUT\necho 1>&2 \"stderr\"");
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		ByteArrayOutputStream err = new ByteArrayOutputStream();
+		ProcessResult res = FS.DETECTED.runIfPresent(db, h, new String[] {
+				"arg1", "arg2" },
+				new PrintStream(out), new PrintStream(err), "stdin");
+		assertEquals("unexpected hook output", "test arg1 arg2\nstdin\n",
+				out.toString("UTF-8"));
+		assertEquals("unexpected output on stderr stream", "stderr\n",
+				err.toString("UTF-8"));
+		assertEquals("unexpected exit code", 0, res.getExitCode());
+		assertEquals("unexpected process status", ProcessResult.Status.OK,
+				res.getStatus());
+	}
+
+	private File writeHookFile(final String name, final String data)
+			throws IOException {
+		File path = new File(db.getWorkTree() + "/.git/hooks/", name);
+		JGitTestUtil.write(path, data);
+		FS.DETECTED.setExecute(path, true);
+		return path;
+	}
+
+	private void assumeSupportedPlatform() {
+		Assume.assumeTrue(FS.DETECTED instanceof FS_POSIX
+				|| FS.DETECTED instanceof FS_Win32_Java7Cygwin);
+	}
+}