IDiff node = mergeContext.getDiffTree().getDiff(iFile1);
assertNotNull(node);
node = mergeContext.getDiffTree().getDiff(iFile2);
assertNotNull(node);
IResourceMappingMerger merger = new SampleModelMerger(
SAMPLE_PROVIDER_ID);
IStatus mergeStatus = merger.merge(mergeContext,
new NullProgressMonitor());
assertEquals(IStatus.OK, mergeStatus.getSeverity());
assertContentEquals(iFile1, branchChanges + initialContent1
+ masterChanges);
assertContentEquals(iFile2, branchChanges + initialContent2