Add sorting tests.

tests/test-sorting.py

@@ -0,0 +1,57 @@
+# Copyright (C) 2011 by Paolo Capriotti <p.capriotti@gmail.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+import unittest
+from pledger.sorting import Sorting, MapSorting, ExpressionSorting
+from pledger.parser import Parser
+from datetime import date
+
+
+class TestSorting(unittest.TestCase):
+    def setUp(self):
+        self.data = [3, 5, 1, 2, 7, 4, 9, 6, 0, 8]
+        self.parser = Parser()
+
+    def testIdentitySorting(self):
+        identity = Sorting(lambda x: x)
+        self.assertEqual(self.data, identity(self.data))
+
+    def testSimpleSorting(self):
+        s = Sorting(lambda x: sorted(x))
+        self.assertEqual(range(10), s(self.data))
+
+    def testInvertedSorting(self):
+        s = ~Sorting(lambda x: sorted(x))
+        self.assertEqual(list(reversed(xrange(10))), s(self.data))
+
+    def testMapSorting(self):
+        s = MapSorting(lambda x: x * (x - 4))
+        self.assertEqual([2, 3, 1, 4, 0, 5, 6, 7, 8, 9], s(self.data))
+
+    def testExpressionSorting(self):
+        s = ExpressionSorting(self.parser, "record * (record - 4)")
+        self.assertEqual([2, 3, 1, 4, 0, 5, 6, 7, 8, 9], s(self.data))
+
+    def testExpressionSortingWithDate(self):
+        s = ExpressionSorting(self.parser, "abs((record - date('2011/01/01')).days)")
+        data = [date(2011, 2, 1), date(2010, 12, 15), date(2011, 9, 5), date(2010, 10, 2)]
+        self.assertEqual(
+            [date(2010, 12, 15), date(2011, 2, 1), date(2010, 10, 2), date(2011, 9, 5)],
+            s(data))