@Test
  public void deleteDeletesUnderlyingStorableEntityFile() throws IOException {
    // Arrange:
    final File file = new File(TEST_FILE_DIRECTORY, "to-be-deleted.bar");
    final TEntityFileDescriptor descriptor = this.createDescriptor(file);
    Assert.assertThat(file.createNewFile(), IsEqual.equalTo(true));

    // Act:
    descriptor.delete();

    // Assert:
    Assert.assertThat(file.exists(), IsEqual.equalTo(false));
  }
  @Test
  public void deleteRaisesExceptionIfFileCannotBeDeleted() {
    // Arrange:
    final File file = Mockito.mock(File.class);
    Mockito.when(file.getName()).thenReturn("foo.bar");
    Mockito.when(file.getAbsolutePath()).thenReturn("foo.bar");
    final TEntityFileDescriptor descriptor = this.createDescriptor(file);

    Mockito.when(file.delete()).thenReturn(false);

    // Act:
    ExceptionAssert.assertThrowsStorageException(
        v -> descriptor.delete(),
        this.getExceptionClass(),
        this.getExceptionValue(
            StorableEntityStorageException.Code.STORABLE_ENTITY_COULD_NOT_BE_DELETED.value()));
  }