testcase for FileUtils.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269514 13f79535-47bb-0310-9956-ffa450edef68

src/testcases/org/apache/tools/ant/util/FileUtilsTest.java

@@ -0,0 +1,128 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2001 The Apache Software Foundation.  All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. The end-user documentation included with the redistribution, if
+ *    any, must include the following acknowlegement:
+ *       "This product includes software developed by the
+ *        Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowlegement may appear in the software itself,
+ *    if and wherever such third-party acknowlegements normally appear.
+ *
+ * 4. The names "The Jakarta Project", "Ant", and "Apache Software
+ *    Foundation" must not be used to endorse or promote products derived
+ *    from this software without prior written permission. For written
+ *    permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache"
+ *    nor may "Apache" appear in their names without prior written
+ *    permission of the Apache Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+
+package org.apache.tools.ant.util;
+
+import java.io.*;
+
+import junit.framework.TestCase;
+
+/**
+ * Tests for org.apache.tools.ant.util.FileUtils.
+ *
+ * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a> 
+ */
+public class FileUtilsTest extends TestCase {
+
+    private File removeThis;
+
+    public FileUtilsTest(String name) {
+        super(name);
+    }
+
+    public void tearDown() {
+        if (removeThis != null && removeThis.exists()) {
+            removeThis.delete();
+        }
+    }
+
+    public void testSetLastModified() throws IOException {
+        FileUtils fu = FileUtils.newFileUtils();
+        removeThis = new File("dummy");
+        FileOutputStream fos = new FileOutputStream(removeThis);
+        fos.write(new byte[0]);
+        fos.close();
+        long modTime = removeThis.lastModified();
+        assertTrue(modTime != 0);
+
+        /*
+         * Sleep for some time to make sure a touched file would get a
+         * more recent timestamp according to the file system's
+         * granularity (should be > 2s to account for Windows FAT).
+         */
+        try {
+            Thread.currentThread().sleep(5000);
+        } catch (InterruptedException ie) {
+            fail(ie.getMessage());
+        }
+
+        fu.setFileLastModified(removeThis, -1);
+        long secondModTime = removeThis.lastModified();
+        try {
+            Class.forName("java.lang.ThreadLocal");
+            assertTrue(secondModTime > modTime);
+        } catch (ClassNotFoundException e) {
+            // JDK 1.1
+            assertEquals(modTime, secondModTime);
+        }
+        
+
+        fu.setFileLastModified(removeThis, 123456);
+        long thirdModTime = removeThis.lastModified();
+        try {
+            Class.forName("java.lang.ThreadLocal");
+            /*
+             * I would love to compare this with 123456, but depending on
+             * the filesystems granularity it can take an arbitrary value.
+             *
+             * Just assert the time has changed.
+             */
+            assertTrue(thirdModTime != secondModTime);
+        } catch (ClassNotFoundException e) {
+            // JDK 1.1
+            assertEquals(modTime, thirdModTime);
+        }
+    }
+
+}