7033824: TEST_BUG: java/nio/file/Files/CopyAndMove.java fails intermittently

[Alan Bateman]

This is small change to a test that fails if the test working directory 
is on a different file system to temporary file system. The test 
exercises copy and move operations on the same file system and different 
file systems if it can. When testing a move of a symbolic link from one 
file system to another then the test incorrectly checks that the last 
modified time is copied. The proposed patch is below. I should mention 
taht the spec is clear that when copying a symbolic link that there is 
no guarantee that its attributes are copied, this isn't made clear in 
the move specification so this is something we need to clarify at some 
point.

-Alan

diff --git a/test/java/nio/file/Files/CopyAndMove.java 
b/test/java/nio/file/Files/CopyAndMove.java
--- a/test/java/nio/file/Files/CopyAndMove.java
+++ b/test/java/nio/file/Files/CopyAndMove.java
@@ -86,10 +86,12 @@ public class CopyAndMove {
          assertTrue(attrs1.isSymbolicLink() == attrs2.isSymbolicLink());
          assertTrue(attrs1.isOther() == attrs2.isOther());

-        // check last modified time
-        long time1 = attrs1.lastModifiedTime().toMillis();
-        long time2 = attrs2.lastModifiedTime().toMillis();
-        assertTrue(time1 == time2);
+        // check last modified time if not a symbolic link
+        if (!attrs1.isSymbolicLink()) {
+            long time1 = attrs1.lastModifiedTime().toMillis();
+            long time2 = attrs2.lastModifiedTime().toMillis();
+            assertTrue(time1 == time2);
+        }

          // check size
          if (attrs1.isRegularFile())