@Test
public void should_delete_files_if_exists() throws Exception {

    File assetsFolder = temporaryFolder.newFolder("maPage", "js");
    File expectFileDeleted = temporaryFolder.newFile("maPage/js/widgets-4576.min.js");
    WidgetFileHelper.deleteConcatenateFile(assetsFolder.toPath());
    assertThat(expectFileDeleted).doesNotExist();
}