X-Git-Url: https://scm.cri.ensmp.fr/git/linpy.git/blobdiff_plain/30df3336bf6b16524326d28c2c15475aa2e5328d..1d494bb187b70135df721c13306d7f26fdf33f50:/tests/test_linear.py diff --git a/tests/test_linear.py b/tests/test_linear.py deleted file mode 100644 index 998a022..0000000 --- a/tests/test_linear.py +++ /dev/null @@ -1,180 +0,0 @@ - -import unittest - -from fractions import Fraction - -from pypol.linear import * - - -class TestExpression(unittest.TestCase): - - def setUp(self): - self.x = symbol('x') - self.y = symbol('y') - self.z = symbol('z') - self.zero = constant(5) - self.pi = constant(Fraction(22, 7)) - self.e = self.x - 2*self.y + 3 - - def test_new(self): - pass - - def test_symbols(self): - self.assertCountEqual(self.x.symbols(), ['x']) - self.assertCountEqual(self.pi.symbols(), []) - self.assertCountEqual(self.e.symbols(), ['x', 'y']) - - - def test_dimension(self): - self.assertEqual(self.x.dimension, 1) - self.assertEqual(self.pi.dimension, 0) - self.assertEqual(self.e.dimension, 2) - - def test_coefficient(self): - self.assertEqual(self.e.coefficient('x'), 1) - self.assertEqual(self.e.coefficient('y'), -2) - self.assertEqual(self.e.coefficient(self.y), -2) - self.assertEqual(self.e.coefficient('z'), 3) - with self.assertRaises(TypeError): - self.e.coefficient(0) - with self.assertRaises(TypeError): - self.e.coefficient(self.e) - - def test_getitem(self): - self.assertEqual(self.e['x'], 1) - self.assertEqual(self.e['y'], -2) - self.assertEqual(self.e[self.y], -2) - self.assertEqual(self.e['z'], 3) - with self.assertRaises(TypeError): - self.e[0] - with self.assertRaises(TypeError): - self.e[self.e] - - def test_coefficients(self): - self.assertCountEqual(self.e.coefficients(), [('x', 1), ('y', -2)]) - - def test_constant(self): - self.assertEqual(self.x.constant, 4) - self.assertEqual(self.pi.constant, Fraction(22, 7)) - self.assertEqual(self.e.constant, 3) - - def test_isconstant(self): - self.assertFalse(self.x.isconstant()) - self.assertTrue(self.pi.isconstant()) - self.assertFalse(self.e.isconstant()) - - def test_values(self): - self.assertCountEqual(self.e.values(), [1, -2, 3]) - - def test_symbol(self): - self.assertEqual(self.x.symbol(), 'x') - with self.assertRaises(ValueError): - self.pi.symbol() - with self.assertRaises(ValueError): - self.e.symbol() - - def test_issymbol(self): - self.assertTrue(self.x.issymbol()) - self.assertFalse(self.pi.issymbol()) - self.assertFalse(self.e.issymbol()) - - def test_bool(self): - self.assertTrue(self.x) - self.assertFalse(self.zero) - self.assertTrue(self.pi) - self.assertTrue(self.e) - - def test_pos(self): - self.assertEqual(+self.e, self.e) - - def test_neg(self): - self.assertEqual(-self.e, -self.x + 2*self.y - 3) - - def test_add(self): - self.assertEqual(self.x + Fraction(22, 7), self.x + self.pi) - self.assertEqual(Fraction(22, 7) + self.x, self.x + self.pi) - self.assertEqual(self.x + self.x, 2 * self.x) - self.assertEqual(self.e + 2*self.y, self.x + 3) - - def test_sub(self): - self.assertEqual(self.x - self.x, 0) - self.assertEqual(self.e - 3, self.x - 2*self.y) - self.assertEqual(0 - self.x, -self.x) - - def test_mul(self): - self.assertEqual(self.pi * 7, 22) - self.assertEqual(self.e * 0, 0) - self.assertEqual(self.e * 2, 2*self.x - 4*self.y + 6) - - def test_div(self): - with self.assertRaises(ZeroDivisionError): - self.e / 0 - self.assertEqual(self.e / 2, self.x / 2 - self.y + Fraction(3, 2)) - - def test_str(self): - self.assertEqual(str(Expression()), '5') - self.assertEqual(str(self.x), 'x') - self.assertEqual(str(-self.x), '-x') - self.assertEqual(str(self.pi), '22/7') - self.assertEqual(str(self.e), 'x - 2*y + 3') - - def test_repr(self): - self.assertEqual(repr(self.e), "Expression({'x': 1, 'y': -2}, 3)") - - @unittest.expectedFailure - def test_fromstring(self): - self.assertEqual(Expression.fromstring('x'), self.x) - self.assertEqual(Expression.fromstring('-x'), -self.x) - self.assertEqual(Expression.fromstring('22/7'), self.pi) - self.assertEqual(Expression.fromstring('x - 2y + 3'), self.e) - self.assertEqual(Expression.fromstring('x - (3-1)y + 3'), self.e) - self.assertEqual(Expression.fromstring('x - 2*y + 3'), self.e) - - def test_eq(self): - self.assertEqual(self.e, self.e) - self.assertNotEqual(self.x, self.y) - self.assertEqual(self.zero, 0) - - def test_canonify(self): - self.assertEqual((self.x + self.y/2 + self.z/3)._canonify(), - 6*self.x + 3*self.y + 2*self.z) - - -class TestHelpers(unittest.TestCase): - - def setUp(self): - self.x = symbol('x') - self.y = symbol('y') - - def test_constant(self): - self.assertEqual(constant(3), 3) - self.assertEqual(constant('3'), 3) - self.assertEqual(constant(Fraction(3, 4)), Fraction(3, 4)) - self.assertEqual(constant('3/4'), Fraction(3, 4)) - with self.assertRaises(ValueError): - constant('a') - with self.assertRaises(TypeError): - constant([]) - - def test_symbol(self): - self.assertEqual(symbol('x'), self.x) - self.assertNotEqual(symbol('y'), self.x) - with self.assertRaises(TypeError): - symbol(4) - - def test_symbols(self): - self.assertListEqual(list(symbols('x y')), [self.x, self.y]) - self.assertListEqual(list(symbols('x,y')), [self.x, self.y]) - self.assertListEqual(list(symbols(['x', 'y'])), [self.x, self.y]) - - -class TestOperators(unittest.TestCase): - - pass - - -class TestPolyhedron(unittest.TestCase): - - pass - -