test_vec.py 文件源码

def assert_vec(vec, x, y, z, msg=''):
    """Asserts that Vec is equal to (x,y,z)."""
    # Don't show in pytest tracebacks.
    __tracebackhide__ = True

    # Ignore slight variations
    if not vec.x == pytest.approx(x):
        failed = 'x'
    elif not vec.y == pytest.approx(y):
        failed = 'y'
    elif not vec.z == pytest.approx(z):
        failed = 'z'
    else:
        # Success!
        return

    new_msg = "{!r} != ({}, {}, {})".format(vec, failed, x, y, z)
    if msg:
        new_msg += ': ' + msg
    pytest.fail(new_msg)