Fix deletion problem in EGit Core tests

EGit core tests sometimes fail because TestUtils.deleteRecursive
can not delete a file.
To workaround the problem the deletion is retried 10 times.

Change-Id: Ia25c9304884c95f54e8e7b98ed49dd044fa7b95b
Signed-off-by: Jens Baumgart <jens.baumgart@sap.com>

1 files changed, 21 insertions, 4 deletions

diff --git a/org.eclipse.egit.core.test/src/org/eclipse/egit/core/test/TestUtils.java b/org.eclipse.egit.core.test/src/org/eclipse/egit/core/test/TestUtils.java
index 8ff9eb80d7..98bfd9b1a4 100644
--- a/org.eclipse.egit.core.test/src/org/eclipse/egit/core/test/TestUtils.java
+++ b/org.eclipse.egit.core.test/src/org/eclipse/egit/core/test/TestUtils.java
@@ -47,15 +47,32 @@ public class TestUtils {
 			for (int i = 0; i < files.length; ++i) {
 				if (files[i].isDirectory())
 					deleteRecursive(files[i]);
-				else if (!files[i].delete())
-					throw new IOException(files[i] + " in use or undeletable");
+				else
+					deleteFile(files[i]);
 			}
 		}
-		if (!d.delete())
-			throw new IOException(d + " in use or undeletable");
+		deleteFile(d);
 		assert !d.exists();
 	}
 
+	private void deleteFile(File file) throws IOException{
+		boolean deleted = false;
+		for (int i = 0; i < 10; i++) {
+			if (file.delete()) {
+				deleted = true;
+				break;
+			}
+			try {
+				Thread.sleep(100);
+			} catch (InterruptedException e) {
+				// ignore
+			}
+			System.out.println(">>> retried deleting " + file.getAbsolutePath());
+		}
+		if (!deleted)
+			throw new IOException("Retried 10 times. Could not delete " + file.getAbsolutePath());
+	}
+
 	/**
 	 * Create a "temporary" directory
 	 *