@Test
public void insertConcatTest() throws IOException {

    InsertLine insertLine = new InsertLine("   fixed: false").relative("/src/main/resources/dogs.yaml");
    TOExecutionResult executionResult = insertLine.execution(transformedAppFolder, transformationContext);
    Assert.assertEquals(executionResult.getType(), TOExecutionResult.Type.SUCCESS);
    assertChangedFile("/src/main/resources/dogs.yaml");
    assertLineCount("/src/main/resources/dogs.yaml", 1);
    Map<String, Dog> dogs = (Map) getObjectFromYaml("/src/main/resources/dogs.yaml");
    Assert.assertEquals(dogs.size(), 2);
    Dog dog = dogs.get("Mustache");
    Assert.assertEquals(dog.getName(), "Mustache");
    Assert.assertEquals(dog.getBreed(), "pit bull");
    Assert.assertEquals(dog.isFixed(), false);
}