X-Git-Url: https://scm.cri.ensmp.fr/git/linpy.git/blobdiff_plain/9e103619134c8839d143951c5b814bab500fcdcf..8608f67525103a25d5337280fcbdc86d498c5d4e:/tests/test_linear.py diff --git a/tests/test_linear.py b/tests/test_linear.py index 2375092..b7006a7 100644 --- a/tests/test_linear.py +++ b/tests/test_linear.py @@ -151,10 +151,35 @@ class TestExpression(unittest.TestCase): self.assertEqual((self.x + self.y/2 + self.z/3)._toint(), 6*self.x + 3*self.y + 2*self.z) + def test_fromsympy(self): + import sympy + sp_x, sp_y = sympy.symbols('x y') + self.assertEqual(Expression.fromsympy(sp_x), self.x) + self.assertEqual(Expression.fromsympy(sympy.Rational(22, 7)), self.pi) + self.assertEqual(Expression.fromsympy(sp_x - 2*sp_y + 3), self.expr) + with self.assertRaises(ValueError): + Expression.fromsympy(sp_x*sp_y) + + def test_tosympy(self): + import sympy + sp_x, sp_y = sympy.symbols('x y') + self.assertEqual(self.x.tosympy(), sp_x) + self.assertEqual(self.pi.tosympy(), sympy.Rational(22, 7)) + self.assertEqual(self.expr.tosympy(), sp_x - 2*sp_y + 3) + class TestConstant(unittest.TestCase): - pass + def setUp(self): + self.zero = Constant(0) + self.one = Constant(1) + self.pi = Constant(Fraction(22, 7)) + + def test_fromsympy(self): + import sympy + self.assertEqual(Constant.fromsympy(sympy.Rational(22, 7)), self.pi) + with self.assertRaises(TypeError): + Constant.fromsympy(sympy.Symbol('x')) class TestSymbol(unittest.TestCase): @@ -171,6 +196,17 @@ class TestSymbol(unittest.TestCase): self.assertListEqual(list(symbols('x,y')), [self.x, self.y]) self.assertListEqual(list(symbols(['x', 'y'])), [self.x, self.y]) + def test_fromsympy(self): + import sympy + sp_x = sympy.Symbol('x') + self.assertEqual(Symbol.fromsympy(sp_x), self.x) + with self.assertRaises(TypeError): + Symbol.fromsympy(sympy.Rational(22, 7)) + with self.assertRaises(TypeError): + Symbol.fromsympy(2 * sp_x) + with self.assertRaises(TypeError): + Symbol.fromsympy(sp_x*sp_x) + class TestOperators(unittest.TestCase):