def test_zero_vecotr():
p1 = _Point(0, 0)
p2 = _Point(0, 1)
p3 = _Point(1, 0)
r_angle1 = get_angle(p1, p2)
assert math.isclose(r_angle1, 0, abs_tol=1e-06)
r_angle2 = get_angle(p1, p3)
assert math.isclose(r_angle2, 0, abs_tol=1e-06)
def test_parallel():
coef = np.random.randint(1, 5)
x, y = np.random.randint(1, 5, 2)
# test 0 degree
p1 = _Point(x, y)
p2 = _Point(x*coef, y*coef)
r_angle1 = get_angle(p1, p2)
assert math.isclose(r_angle1, 0, abs_tol=1e-06)
# test 180 degree
p3 = _Point(x*coef*(-1), y*coef*(-1))
r_angle2 = get_angle(p1, p3)
assert math.isclose(r_angle2, math.pi, abs_tol=1e-06)
def test_invalid_3():
with pytest.raises(Exception):
_Point(3, 3, 2);
def test_90_degree():
p1 = _Point(1, 0)
p2 = _Point(0, 1)
r_angle = get_angle(p1, p2)
assert math.isclose(r_angle, math.pi/2, abs_tol=1e-06)
def test_invalid_0():
with pytest.raises(Exception):
_Point();