@Test
  public void getFile() {
    when(path.segmentCount()).thenReturn(2);

    IFile file = container.getFile(path);

    assertNotNull(file);
  }
 @Test(expected = IllegalArgumentException.class)
 public void getFileWithPathWithLessThanTwoSegmentsShouldThrowException() {
   container.getFile(path);
 }