@Test
public void fileDoesNotExistTest() {

    InsertText insertText = new InsertText(billyURL).relative("caes.yaml");
    TOExecutionResult executionResult = insertText.execution(transformedAppFolder, transformationContext);
    Assert.assertEquals(executionResult.getType(), TOExecutionResult.Type.ERROR);
    Assert.assertEquals(executionResult.getException().getClass(), FileNotFoundException.class);
}