gdnative_python/tests/bindings/test_transform2d.py

import pytest

from pandemonium import Transform2D, Vector2, Rect2


def test_init():
    v = Transform2D()
    assert type(v) == Transform2D
    args = (Vector2(1, 2), Vector2(3, 4), Vector2(5, 6))
    v2 = Transform2D(*args)
    assert type(v) == Transform2D
    assert v2 == Transform2D(*args)
    assert v != v2


@pytest.mark.parametrize(
    "args",
    [
        ("NaN", Vector2(), Vector2()),
        (Vector2(), "NaN", Vector2()),
        (Vector2(), Vector2(), "Nan"),
        (None, Vector2(), Vector2()),
        (Vector2(), None, Vector2()),
        (Vector2(), Vector2(), None),
    ],
)
def test_bad_init(args):
    with pytest.raises(TypeError):
        Transform2D(*args)


def test_repr():
    v = Transform2D()
    assert repr(v).startswith("<Transform2D(")


def test_init_from_rot_pos():
    v = Transform2D.from_rot_pos(1, Vector2())
    assert isinstance(v, Transform2D)


@pytest.mark.parametrize("args", [(1,), (None, Vector2()), ("NaN", Vector2()), (1, "bad")])
def test_bad_init_from_rot_pos(args):
    with pytest.raises(TypeError):
        Transform2D.from_rot_pos(*args)


@pytest.mark.parametrize(
    "field,ret_type,params",
    [
        ["inverse", Transform2D, ()],
        ["affine_inverse", Transform2D, ()],
        ["get_rotation", float, ()],
        # ["get_origin", Vector2, ()],
        ["get_scale", Vector2, ()],
        ["orthonormalized", Transform2D, ()],
        ["rotated", Transform2D, (1.0,)],
        ["scaled", Transform2D, (Vector2(),)],
        ["translated", Transform2D, (Vector2(),)],
        ["xform", Vector2, (Vector2(),)],
        ["xform_inv", Vector2, (Vector2(),)],
        ["xform", Rect2, (Rect2(),)],
        ["xform_inv", Rect2, (Rect2(),)],
        ["basis_xform", Vector2, (Vector2(),)],
        ["basis_xform_inv", Vector2, (Vector2(),)],
        ["interpolate_with", Transform2D, (Transform2D(), 1.0)],
    ],
    ids=lambda x: x[0],
)
def test_methods(field, ret_type, params):
    v = Transform2D()
    # Don't test methods' validity but bindings one
    assert hasattr(v, field)
    method = getattr(v, field)
    assert callable(method)
    ret = method(*params)
    assert type(ret) == ret_type


@pytest.mark.parametrize(
    "field,params",
    [
        ["scaled", (None,)],
        ["translated", (None,)],
        ["xform", (None,)],
        ["xform_inv", (None,)],
        ["xform", (None,)],
        ["xform_inv", (None,)],
        ["basis_xform", (None,)],
        ["basis_xform_inv", (None,)],
        ["interpolate_with", (None, 1.0)],
    ],
    ids=lambda x: x[0],
)
def test_methods_call_with_none(field, params):
    v = Transform2D()
    method = getattr(v, field)
    with pytest.raises(TypeError):
        method(*params)


def test_mult():
    v1 = Transform2D()
    v2 = Transform2D()
    v3 = v1 * v2
    assert isinstance(v3, Transform2D)
    v2 *= v1
    assert v3 == v2


@pytest.mark.parametrize("arg", [None, "dummy"], ids=lambda x: x[0])
def test_bad_mult(arg):
    with pytest.raises(TypeError):
        Transform2D(2, 3) * arg


def test_equal():
    arr = Transform2D(Vector2(1, 2), Vector2(3, 4), Vector2(5, 6))
    other = Transform2D(Vector2(1, 2), Vector2(3, 4), Vector2(5, 6))
    assert arr == other
    bad = Transform2D(Vector2(0, 2), Vector2(3, 4), Vector2(5, 6))
    assert not arr == bad  # Force use of __eq__


@pytest.mark.parametrize("arg", [None, 0, "foo", Transform2D()])
def test_not_equal(arg):
    arr = Transform2D(Vector2(1, 2), Vector2(3, 4), Vector2(5, 6))
    assert arr != arg
    assert not arr != arr  # Force use of __ne__