@Test
public void insertConcatTest() throws IOException {

    InsertText insertText = new InsertText(billyURL).relative("src/main/resources/dogs.yaml");
    TOExecutionResult executionResult = insertText.execution(transformedAppFolder, transformationContext);
    Assert.assertEquals(executionResult.getType(), TOExecutionResult.Type.SUCCESS);
    assertChangedFile("src/main/resources/dogs.yaml");
    assertLineCount("src/main/resources/dogs.yaml", 3);
    Map<String, Dog> dogs = (Map) getObjectFromYaml("src/main/resources/dogs.yaml");
    Assert.assertEquals(dogs.size(), 3);
    Dog dog = dogs.get("Billy");
    Assert.assertEquals(dog.getName(), "Billy");
    Assert.assertEquals(dog.getBreed(), "lab");
}