Bug 485342: [Layout] Integrate ELK with Papyrus

This contribution works on the release 0.1 from ELK.
It provides JUnit tests on ELK integration (mainly based on an export of
the diagram using SVG export facility from Papyrus, and compare with a
reference diagram).

- add a syserr of the current file to understand better errors in junit
report

Change-Id: Ifb534f2cdf07299b52c75d14186c572be5e5cf19
Signed-off-by: Remi Schnekenburger <remi.schnekenburger@cea.fr>

1 files changed, 3 insertions, 2 deletions

diff --git a/tests/junit/extraplugins/elk/org.eclipse.papyrus.infra.gmfdiag.elk.tests/src/org/eclipse/papyrus/infra/gmfdiag/elk/tests/classdiag/ClassDiagramLayoutTests.java b/tests/junit/extraplugins/elk/org.eclipse.papyrus.infra.gmfdiag.elk.tests/src/org/eclipse/papyrus/infra/gmfdiag/elk/tests/classdiag/ClassDiagramLayoutTests.java
index be2a4a5c01e..79670b6fe5d 100644
--- a/tests/junit/extraplugins/elk/org.eclipse.papyrus.infra.gmfdiag.elk.tests/src/org/eclipse/papyrus/infra/gmfdiag/elk/tests/classdiag/ClassDiagramLayoutTests.java
+++ b/tests/junit/extraplugins/elk/org.eclipse.papyrus.infra.gmfdiag.elk.tests/src/org/eclipse/papyrus/infra/gmfdiag/elk/tests/classdiag/ClassDiagramLayoutTests.java
@@ -162,8 +162,9 @@ public class ClassDiagramLayoutTests extends AbstractPapyrusTest {
 		IRangeComparator expectedContent = new TokenComparator(readFile(expected));
 		IRangeComparator currentContent = new TokenComparator(readFile(current));
 		RangeDifference[] diffs = RangeDifferencer.findDifferences(expectedContent, currentContent);
-		for(int i = 0; i < diffs.length; i++) {
-			System.err.println(i + " -> " + diffs[i].toString());
+		if(diffs.length > 0) {
+			System.err.println("current file:");
+			System.err.println(readFile(expected));
 		}
 		assertThat("There should not be any difference, but some diffs were found.", diffs.length, equalTo(0));
 	}