def test_y_intercept_horizontal(self):
"""
Tests computing x-intercept of a horizontal line
"""
start = Point(-79.2, 40)
end = Point(-86.2, 40)
border = Border(start, end)
self.assertTrue(math.isnan(border._get_x_intercept()), "Horizontal x-intercept calculation not working")
def test_y_intercept_vertical(self):
"""
Tests computing x-intercept of a vertical line
"""
start = Point(-79.2, 40)
end = Point(-79.2, 33)
border = Border(start, end)
self.assertEqual(-79.2, border._get_x_intercept(), "Vertical x-intercept calculation not working")
def test_y_intercept_regular(self):
"""
Tests computing x-intercept of a non vertical and non horizontal line
"""
start = Point(-79.2, 40)
end = Point(-86.2, 33)
border = Border(start, end)
self.assertEqual(119.2, border._get_x_intercept(), "Regular y-intercept calculation not working")
