Fix ImageTest for Windows environments.

The test was failing due to non respect of the date/time granularity of the
filesystem.


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@274711 13f79535-47bb-0310-9956-ffa450edef68

src/testcases/org/apache/tools/ant/taskdefs/optional/image/ImageTest.java

@@ -55,6 +55,7 @@
 package org.apache.tools.ant.taskdefs.optional.image;
 
 import org.apache.tools.ant.BuildFileTest;
+import org.apache.tools.ant.taskdefs.condition.Os;
 
 import java.io.IOException;
 import java.io.File;
@@ -107,6 +108,12 @@ public class ImageTest extends BuildFileTest {
       expectLogContaining("testSimpleScale", "Processing File");
       File f = createRelativeFile( "/dest/" + LARGEIMAGE  );
       long lastModified = f.lastModified();
+       if (Os.isFamily("dos")) {
+           try {
+            Thread.sleep(2000);
+           }
+           catch (InterruptedException e) {}
+       }
       expectLogContaining("testOverwriteTrue", "Processing File");
       f = createRelativeFile( "/dest/" + LARGEIMAGE  );
       long overwrittenLastModified = f.lastModified();