Model manipulation test

SchoolTestsModelManipulation.xtend

@Test
	def changeSchoolName(){
		val sns = snapshot
		val pm = queryInputEIQ
		pm.assertMatchResults(sns)

		// MODEL MODIFICATION HERE
		// change the School "Budapest University of Technology and Economics" name to "BME"
		val matcher = pm.initializeMatcherFromModel(sns.EMFRootForSnapshot, "school.schools")
		val s = matcher.oneArbitraryMatch.get("Sch") as School
		Assert::assertNotNull(s)
		if (s!=null) {			
			if(s.name == "Budapest University of Technology and Economics"){
				s.setName("BME")
			}			
			val newSns = sns.eResource.resourceSet.loadExpectedResultsFromUri("school.tests/model/tests_changeSchoolName.eiqsnapshot")
			pm.assertMatchResults(newSns)
		}
	}