Diagnose JUnit Test

Author: matthiasblaesing

contrib/platform/test/com/sun/jna/platform/linux/UdevTest.java

@@ -74,29 +74,32 @@ public void testEnumerateDevices() {
                                     // No additional reference is acquired from getParent
                                     if (parent != null && parent2 != null) {
                                         // Devnode should match same parent without restricting to block and disk
-                                        assertEquals("Partition parent should match with and without filter",
+                                        assertEquals(String.format(
+                                                "Partition parent should match with and without filter (%s)",
+                                                devnode
+                                                ),
                                                 parent.getDevnode(), parent2.getDevnode());
                                         // Save the size and major
                                         parentSize = parent.getSysattrValue("size");
                                         parentMajor = parent.getPropertyValue("MAJOR");
                                     }
                                 }
                                 String size = device.getSysattrValue("size");
-                                assertTrue("Size must be nonnegative", 0 <= Long.parseLong(size));
+                                assertTrue(String.format("Size must be nonnegative (%s)", devnode), 0 <= Long.parseLong(size));
                                 if (parentSize != null) {
-                                    assertTrue("Partition can't be bigger than its disk",
+                                    assertTrue(String.format("Partition can't be bigger than its disk (%s)", devnode),
                                             Long.parseLong(size) <= Long.parseLong(parentSize));
                                 }
                                 String major = device.getPropertyValue("MAJOR");
-                                assertTrue("Major value must be nonnegative", 0 <= Long.parseLong(major));
+                                assertTrue(String.format("Major value must be nonnegative (%s)", devnode), 0 <= Long.parseLong(major));
                                 if (parentMajor != null) {
-                                    assertEquals("Partition and its parent disk should have same major number", major,
+                                    assertEquals(String.format("Partition and its parent disk should have same major number (%s)", devnode), major,
                                             parentMajor);
                                 }
-                                assertEquals("DevType mismatch", devType, device.getDevtype());
-                                assertEquals("Subsystem mismatch", "block", device.getSubsystem());
-                                assertEquals("Syspath mismatch", syspath, device.getSyspath());
-                                assertTrue("Syspath should end with name", syspath.endsWith(device.getSysname()));
+                                assertEquals(String.format("DevType mismatch (%s)", devnode), devType, device.getDevtype());
+                                assertEquals(String.format("Subsystem mismatch (%s)", devnode), "block", device.getSubsystem());
+                                assertEquals(String.format("Syspath mismatch (%s)", devnode), syspath, device.getSyspath());
+                                assertTrue(String.format("Syspath should end with name (%s)", devnode), syspath.endsWith(device.getSysname()));
                             }
                         } finally {
                             // Release the reference and iterate to the next device