@Test
  public void testGetAttribute_fromInheritedProvider() {
    File file = createFile();
    assertThat(service.getAttribute(file, "test:isRegularFile")).isEqualTo(false);
    assertThat(service.getAttribute(file, "test:isDirectory")).isEqualTo(true);
    assertThat(service.getAttribute(file, "test", "fileKey")).isEqualTo(0);
  }
Tests for {@link AttributeService}.

@author Colin Decker
jimfs/src/test/java/com/google/common/jimfs/AttributeServiceTest.java