private AbstractGrammarElementFinder grammarFinder() {
	final String file = "classpath:/org/eclipse/xtext/generator/grammarAccess/ElementFinderTestLanguage.xtext";
	XtextResourceSet rs = get(XtextResourceSet.class);
	rs.setClasspathURIContext(getClass());
	final Resource r = rs.getResource(URI.createURI(file), true);
	return new AbstractGrammarElementFinder() {
		@Override
		public Grammar getGrammar() {
			return (Grammar) r.getContents().get(0);
		}
	};
}
 

@Test public void testFindCrossReferences() {
	AbstractGrammarElementFinder f = grammarFinder();
	AbstractRule r = GrammarUtil.findRuleForName(f.getGrammar(), "FQN");
	assertNotNull(r);
	assertEquals(1, f.findCrossReferences(r).size());

	EClass type = (EClass) GrammarUtil.findRuleForName(f.getGrammar(), "Type").getType().getClassifier();
	assertNotNull(type);
	assertEquals(1, f.findCrossReferences(type).size());
}
 

@Test public void testFindRuleCalls() {
	AbstractGrammarElementFinder f = grammarFinder();
	AbstractRule r = GrammarUtil.findRuleForName(f.getGrammar(), "FinderKeywords");
	assertEquals(2, f.findRuleCalls(r).size());
}