add test cases
Merge commit '1a7fc63d46f0d380e89389c15c7488f91701000a'

Conflicts:
	.metadata/.plugins/org.eclipse.core.resources/.projects/CaseStudies/.markers.snap
	.metadata/.plugins/org.eclipse.core.resources/.projects/CaseStudies/.syncinfo.snap
	.metadata/.plugins/org.eclipse.core.resources/.projects/CaseStudySamples/.markers.snap
	.metadata/.plugins/org.eclipse.core.resources/.projects/CaseStudySamples/.syncinfo.snap
	.metadata/.plugins/org.eclipse.core.resources/.root/.markers.snap
	.metadata/.plugins/org.eclipse.core.resources/.safetable/org.eclipse.core.resources
	.metadata/.plugins/org.eclipse.core.resources/.snap