def test8(self):
"""Cubic equation, two roots."""
self.f = MagicMock(return_value=solve(0, 1, 4, 5, 2))
self.assertEqual(self.f(),
"x1 = -2.0,\nx2 = -0.9999999999999999")
def test_err(self):
"""Incorrect input."""
with self.assertRaises(TypeError):
self.f = MagicMock(return_value=solve(0, 1, 10, 24, "qwerty"))
def test6(self):
"""Square equatuion, complex solutions."""
self.f = MagicMock(return_value=solve(0, 0, 1, 2.0, 2.0))
s = "x1 = -0.9999999999999999 - 1.0 * i,\n"
s = s + "x2 = -0.9999999999999999 + 1.0 * i"
self.assertEqual(self.f(), s)
def test7(self):
"""Cubic equation, one root."""
self.f = MagicMock(return_value=solve(0, 1, 6, 12, 8))
self.assertEqual(self.f(), "x = -2.0 ")
def test5(self):
"""Square equation, x1 != x2."""
self.f = MagicMock(return_value=solve(0, 0, 2, 4, -6))
self.assertEqual(self.f(), 'x1 = -3.0,\nx2 = 1.0')
def test4(self):
"""Square equation, x1=x2."""
self.f = MagicMock(return_value=solve(0, 0, 1, -2, 1))
self.assertEqual(self.f(), 'x = 1.0 ')
def test3(self):
"""Linear equation."""
self.f = MagicMock(return_value=solve(0, 0, 0, 27, 27))
self.assertEqual(self.f(), 'x = -1.0 ')
def test2(self):
"""a = b = c = d = 0, e != 0."""
self.f = MagicMock(return_value=solve(0, 0, 0, 0, 27))
self.assertEqual(self.f(), "No solutions")
def test1(self):
"""a = b = c = d = e = 0."""
self.f = MagicMock(return_value=solve(0, 0, 0, 0, 0))
self.assertEqual(self.f(), "Infinitetly many solutions")