def METHOD_NAME(barerepo):
    tree = barerepo[TREE_SHA]
    with pytest.raises(TypeError): tree[()]
    with pytest.raises(TypeError):
        tree / 123
    utils.assertRaisesWithArg(KeyError, 'abcd', lambda: tree['abcd'])
    utils.assertRaisesWithArg(IndexError, -4, lambda: tree[-4])
    utils.assertRaisesWithArg(IndexError, 3, lambda: tree[3])
    utils.assertRaisesWithArg(KeyError, 'abcd', lambda: tree / 'abcd')
    assert 3 == len(tree)
    sha = '7f129fd57e31e935c6d60a0c794efe4e6927664b'
    assert 'a' in tree
    assertTreeEntryEqual(tree[0], sha, 'a', 0o0100644)
    assertTreeEntryEqual(tree[-3], sha, 'a', 0o0100644)
    assertTreeEntryEqual(tree['a'], sha, 'a', 0o0100644)
    assertTreeEntryEqual(tree / 'a', sha, 'a', 0o0100644)
    sha = '85f120ee4dac60d0719fd51731e4199aa5a37df6'
    assert 'b' in tree
    assertTreeEntryEqual(tree[1], sha, 'b', 0o0100644)
    assertTreeEntryEqual(tree[-2], sha, 'b', 0o0100644)
    assertTreeEntryEqual(tree['b'], sha, 'b', 0o0100644)
    assertTreeEntryEqual(tree / 'b', sha, 'b', 0o0100644)
    sha = '297efb891a47de80be0cfe9c639e4b8c9b450989'
    assertTreeEntryEqual(tree['c/d'], sha, 'd', 0o0100644)
    assertTreeEntryEqual(tree / 'c/d', sha, 'd', 0o0100644)
    assertTreeEntryEqual(tree / 'c' / 'd', sha, 'd', 0o0100644)
    assertTreeEntryEqual(tree['c']['d'], sha, 'd', 0o0100644)
    assertTreeEntryEqual((tree / 'c')['d'], sha, 'd', 0o0100644)
    utils.assertRaisesWithArg(KeyError, 'ab/cd', lambda: tree['ab/cd'])
    utils.assertRaisesWithArg(KeyError, 'ab/cd', lambda: tree / 'ab/cd')
    utils.assertRaisesWithArg(KeyError, 'ab', lambda: tree / 'c' / 'ab')
    with pytest.raises(TypeError):
        tree / 'a' / 'cd'