Bug 40557 quick fix: improve return type guessing
3.0 M2 class A { private boolean foo() { return f(1) || f(2); } } quich fix should be able to figure out that i want 'f' to be a boolean method
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/UnresolvedMethodsQuickFixTest.java
buf.append("public class X {\n");
		buf.append("    public void xoo(Set set, int i, int k) {\n");
		buf.append("       int j= 0;\n");		
		buf.append("    }\n");
		buf.append("}\n");
		String expected2= buf.toString();
		proposal= (CUCorrectionProposal) proposals.get(2);
		String preview3= proposal.getCompilationUnitChange().getPreviewContent();
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("\n");	
		buf.append("import java.util.Set;\n");
		buf.append("\n");	
		buf.append("public class X {\n");
		buf.append("    public void xoo(int i) {\n");
		buf.append("       int j= 0;\n");		
		buf.append("    }\n");
		buf.append("\n");		
		buf.append("    public void xoo(Set set, int i, int j) {\n");
		buf.append("    }\n");		
		buf.append("}\n");
		String expected3= buf.toString();
		
		assertEqualStringsIgnoreOrder(new String[] { preview1, preview2, preview3 }, new String[] { expected1, expected2, expected3 });		
	}
	
	
	
	public void testParameterMismatchSwap() throws Exception {
		IPackageFragment pack1= fSourceFolder.createPackageFragment("test1", false, null);