def METHOD_NAME(self, capsys):
    """CLI `show` command prints correct output"""
    main("show pydicom::MR_small_RLE.dcm".split())
    out, err = capsys.readouterr()
    assert "Instance Creation Date              DA: '20040826'" in out
    assert out.endswith("OB: Array of 126 elements\n")
    assert err == ""
    # Get a specific data element
    main("show pydicom::MR_small_RLE.dcm::LargestImagePixelValue".split())
    out, _ = capsys.readouterr()
    assert "4000" == out.strip()