Fix license headers

[linpy.git] / pypol / tests / test_linexprs.py

diff --git a/pypol/tests/test_linexprs.py b/pypol/tests/test_linexprs.py
index adfec7d..0fca90e 100644 (file)
--- a/pypol/tests/test_linexprs.py
+++ b/pypol/tests/test_linexprs.py
@@ -1,3 +1,20 @@
+# Copyright 2014 MINES ParisTech
+#
+# This file is part of Linpy.
+#
+# Linpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Linpy is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Linpy.  If not, see <http://www.gnu.org/licenses/>.
+
 import functools
 import unittest
 
@@ -19,8 +36,8 @@ class TestExpression(unittest.TestCase):
         self.expr = self.x - 2*self.y + 3
 
     def test_new(self):
-        self.assertIsInstance(self.x, Symbol)
-        self.assertIsInstance(self.pi, Rational)
+        self.assertIsInstance(Expression(coefficients={self.x: 1}), Symbol)
+        self.assertIsInstance(Expression(constant=self.pi), Rational)
         self.assertNotIsInstance(self.x + self.pi, Symbol)
         self.assertNotIsInstance(self.x + self.pi, Rational)
         xx = Expression({self.x: 2})
@@ -59,7 +76,7 @@ class TestExpression(unittest.TestCase):
             self.expr[self.expr]
 
     def test_coefficients(self):
-        self.assertCountEqual(self.expr.coefficients(), [(self.x, 1), (self.y, -2)])
+        self.assertListEqual(list(self.expr.coefficients()), [(self.x, 1), (self.y, -2)])
 
     def test_constant(self):
         self.assertEqual(self.x.constant, 0)
@@ -67,9 +84,9 @@ class TestExpression(unittest.TestCase):
         self.assertEqual(self.expr.constant, 3)
 
     def test_symbols(self):
-        self.assertCountEqual(self.x.symbols, [self.x])
-        self.assertCountEqual(self.pi.symbols, [])
-        self.assertCountEqual(self.expr.symbols, [self.x, self.y])
+        self.assertTupleEqual(self.x.symbols, (self.x,))
+        self.assertTupleEqual(self.pi.symbols, ())
+        self.assertTupleEqual(self.expr.symbols, (self.x, self.y))
 
     def test_dimension(self):
         self.assertEqual(self.x.dimension, 1)
@@ -87,7 +104,7 @@ class TestExpression(unittest.TestCase):
         self.assertFalse(self.expr.issymbol())
 
     def test_values(self):
-        self.assertCountEqual(self.expr.values(), [1, -2, 3])
+        self.assertListEqual(list(self.expr.values()), [1, -2, 3])
 
     def test_bool(self):
         self.assertTrue(self.x)
@@ -117,11 +134,15 @@ class TestExpression(unittest.TestCase):
         self.assertEqual(self.expr * 0, 0)
         self.assertEqual(0 * self.expr, 0)
         self.assertEqual(self.expr * 2, 2*self.x - 4*self.y + 6)
+        with self.assertRaises(TypeError):
+            self.x * self.x
 
     def test_truediv(self):
         with self.assertRaises(ZeroDivisionError):
             self.expr / 0
         self.assertEqual(self.expr / 2, self.x / 2 - self.y + Fraction(3, 2))
+        with self.assertRaises(TypeError):
+            self.x / self.x
 
     def test_eq(self):
         self.assertEqual(self.expr, self.expr)
@@ -225,10 +246,45 @@ class TestSymbol(unittest.TestCase):
         with self.assertRaises(TypeError):
             Symbol.fromsympy(sp_x*sp_x)
 
-    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 TestDummy(unittest.TestCase):
+
+    def setUp(self):
+        self.x = Dummy('x')
+
+    def test_new(self):
+        self.assertEqual(self.x.name, 'x')
+        self.assertTrue(Dummy().name.startswith('Dummy'))
+
+    def test_eq(self):
+        self.assertEqual(self.x, self.x)
+        self.assertNotEqual(self.x, Symbol('x'))
+        self.assertNotEqual(Symbol('x'), self.x)
+        self.assertNotEqual(self.x, Dummy('x'))
+        self.assertNotEqual(Dummy(), Dummy())
+
+    def test_repr(self):
+        self.assertEqual(repr(self.x), '_x')
+        dummy1 = Dummy()
+        dummy2 = Dummy()
+        self.assertTrue(repr(dummy1).startswith('_Dummy_'))
+        self.assertNotEqual(repr(dummy1), repr(dummy2))
+
+
+class TestSymbols(unittest.TestCase):
+
+    def setUp(self):
+        self.x = Symbol('x')
+        self.y = Symbol('y')
+
+    def test(self):
+        self.assertTupleEqual(symbols('x y'), (self.x, self.y))
+        self.assertTupleEqual(symbols('x,y'), (self.x, self.y))
+        self.assertTupleEqual(symbols(['x', 'y']), (self.x, self.y))
+        with self.assertRaises(TypeError):
+            symbols(1)
+        with self.assertRaises(TypeError):
+            symbols(['a', 1])
 
 
 class TestRational(unittest.TestCase):
@@ -236,7 +292,7 @@ class TestRational(unittest.TestCase):
     def setUp(self):
         self.zero = Rational(0)
         self.one = Rational(1)
-        self.pi = Rational(Fraction(22, 7))
+        self.pi = Rational(22, 7)
 
     def test_new(self):
         self.assertEqual(Rational(), self.zero)
@@ -244,6 +300,10 @@ class TestRational(unittest.TestCase):
         self.assertEqual(Rational(self.pi), self.pi)
         self.assertEqual(Rational('22/7'), self.pi)
 
+    def test_hash(self):
+        self.assertEqual(hash(self.one), hash(1))
+        self.assertEqual(hash(self.pi), hash(Fraction(22, 7)))
+
     def test_isconstant(self):
         self.assertTrue(self.zero.isconstant())
 
@@ -251,13 +311,6 @@ class TestRational(unittest.TestCase):
         self.assertFalse(self.zero)
         self.assertTrue(self.pi)
 
-    def test_fromstring(self):
-        self.assertEqual(Rational.fromstring('22/7'), self.pi)
-        with self.assertRaises(ValueError):
-            Rational.fromstring('a')
-        with self.assertRaises(TypeError):
-            Rational.fromstring(1)
-
     def test_repr(self):
         self.assertEqual(repr(self.zero), '0')
         self.assertEqual(repr(self.one), '1')