Bug 43248 "Assign statement to local variable" removes preceeding comment [quick assist] [ast rewrite]
Consider the method public void a() { // here is a comment System.getenv("");X } where X denotes the cursor. If the quick fix "Assign statement to local variable" is used the comment disapears...
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/AssistQuickFixTest.java
String expected1= buf.toString();
		
		proposal= (CUCorrectionProposal) proposals.get(1);
		String preview2= proposal.getCompilationUnitChange().getPreviewContent();
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E {\n");
		buf.append("\n");
		buf.append("    private int fCount;\n");
		buf.append("\n");
		buf.append("    public void foo() {\n");
		buf.append("        SecurityManager _manager = System.getSecurityManager();\n");
		buf.append("    }\n");
		buf.append("}\n");
		String expected2= buf.toString();
		
		assertEqualStringsIgnoreOrder(new String[] { preview1, preview2 }, new String[] { expected1, expected2 });	
	}
	
	public void testAssignToLocal4() throws Exception {
		
		
		IPackageFragment pack1= fSourceFolder.createPackageFragment("test1", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E {\n");
		buf.append("\n");
		buf.append("    private int f;\n");
		buf.append("\n");
		buf.append("    public void foo() {\n");