Debug TimeGraphViewTest

Signed-off-by: Patrick Tasse <patrick.tasse@gmail.com>

Author: PatrickTasse

tmf/org.eclipse.tracecompass.tmf.ui.swtbot.tests/src/org/eclipse/tracecompass/tmf/ui/swtbot/tests/views/TimeGraphViewTest.java

@@ -550,7 +550,7 @@ public void testLegend() {
         resetTimeRange();
         Rectangle bounds = fBounds;
 
-        ImageHelper ref = ImageHelper.grabImage(bounds);
+        ImageHelper ref = ImageHelper.waitForNewImage(bounds, null);
 
         // Set the widths to 0.25
 
@@ -572,7 +572,7 @@ public void testLegend() {
         /* Compare with the original, they should be different */
         int refCount = ref.getHistogram().count(fHair);
         int skinnyCount = skinny.getHistogram().count(fHair);
-        assertTrue(String.format("Count of \"\"HAIR\"\" (%s) did not get change despite change of width before: %d after:%d histogram:%s", fHair, refCount, skinnyCount, Multisets.copyHighestCountFirst(skinny.getHistogram())), skinnyCount < refCount);
+        assertTrue(String.format("Count of \"\"HAIR\"\" (%s) did not get change despite change of width before: %d after:%d ref:%s histogram:%s", fHair, refCount, skinnyCount, Multisets.copyHighestCountFirst(ref.getHistogram()), Multisets.copyHighestCountFirst(skinny.getHistogram())), skinnyCount < refCount);
 
         // reset all
         fViewBot.toolbarButton(SHOW_LEGEND).click();