def test_is_correct_for_lines_of_a_single_point(self):
a = (0, 0)
b = (-5, 0)
self.assertTrue(colinear_lines_overlap(a, b))
def test_raises_error_with_invalid_input(self):
a = None
b = ('foo', 'bar')
with self.assertRaises(TypeError):
colinear_lines_overlap(a, b)
def test_is_correct_for_lines_that_share_end_and_start_points(self):
a = (1, 5)
b = (5, 10)
self.assertTrue(colinear_lines_overlap(a, b))
def test_is_correct_for_equal_lines(self):
a = (1, 3)
b = (1, 3)
self.assertTrue(colinear_lines_overlap(a, b))
def test_is_correct_for_lines_with_same_origin(self):
a = (1, 5)
b = (1, 3)
self.assertTrue(colinear_lines_overlap(a, b))
def test_is_correct_for_line_ranging_negative_and_positive_positions(self):
a = (-5, 5)
b = (-6, -1)
self.assertTrue(colinear_lines_overlap(a, b))
def test_is_correct_negative_lines_that_overlap(self):
a = (-1, -5)
b = (-2, -6)
self.assertTrue(colinear_lines_overlap(a, b))
def test_is_correct_for_positive_lines_where_a_contains_b(self):
a = (1, 5)
b = (2, 3)
self.assertTrue(colinear_lines_overlap(a, b))
def test_is_correct_for_positive_lines_that_dont_overlap(self):
a = (1, 3)
b = (4, 5)
self.assertFalse(colinear_lines_overlap(a, b))
def test_accepts_lists_as_input(self):
a = [1, 3]
b = [2, 4]
self.assertTrue(colinear_lines_overlap(a, b))
