diff options
Diffstat (limited to 'pytz/tests/test_lazy.py')
-rw-r--r-- | pytz/tests/test_lazy.py | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/pytz/tests/test_lazy.py b/pytz/tests/test_lazy.py new file mode 100644 index 0000000..3a4afa6 --- /dev/null +++ b/pytz/tests/test_lazy.py @@ -0,0 +1,313 @@ +from operator import * +import os.path +import sys +import unittest +import warnings + + +if __name__ == '__main__': + # Only munge path if invoked as a script. Testrunners should have setup + # the paths already + sys.path.insert(0, os.path.abspath(os.path.join(os.pardir, os.pardir))) + + +from pytz.lazy import LazyList, LazySet + + +class LazyListTestCase(unittest.TestCase): + initial_data = [3,2,1] + + def setUp(self): + self.base = [3, 2, 1] + self.lesser = [2, 1, 0] + self.greater = [4, 3, 2] + + self.lazy = LazyList(iter(list(self.base))) + + def test_unary_ops(self): + unary_ops = [str, repr, len, bool, not_] + try: + unary_ops.append(unicode) + except NameError: + pass # unicode no longer exists in Python 3. + + for op in unary_ops: + self.assertEqual( + op(self.lazy), + op(self.base), str(op)) + + def test_binary_ops(self): + binary_ops = [eq, ge, gt, le, lt, ne, add, concat] + try: + binary_ops.append(cmp) + except NameError: + pass # cmp no longer exists in Python 3. + + for op in binary_ops: + self.assertEqual( + op(self.lazy, self.lazy), + op(self.base, self.base), str(op)) + for other in [self.base, self.lesser, self.greater]: + self.assertEqual( + op(self.lazy, other), + op(self.base, other), '%s %s' % (op, other)) + self.assertEqual( + op(other, self.lazy), + op(other, self.base), '%s %s' % (op, other)) + + # Multiplication + self.assertEqual(self.lazy * 3, self.base * 3) + self.assertEqual(3 * self.lazy, 3 * self.base) + + # Contains + self.assertTrue(2 in self.lazy) + self.assertFalse(42 in self.lazy) + + def test_iadd(self): + self.lazy += [1] + self.base += [1] + self.assertEqual(self.lazy, self.base) + + def test_bool(self): + self.assertTrue(bool(self.lazy)) + self.assertFalse(bool(LazyList())) + self.assertFalse(bool(LazyList(iter([])))) + + def test_hash(self): + self.assertRaises(TypeError, hash, self.lazy) + + def test_isinstance(self): + self.assertTrue(isinstance(self.lazy, list)) + self.assertFalse(isinstance(self.lazy, tuple)) + + def test_callable(self): + try: + callable + except NameError: + return # No longer exists with Python 3. + self.assertFalse(callable(self.lazy)) + + def test_append(self): + self.base.append('extra') + self.lazy.append('extra') + self.assertEqual(self.lazy, self.base) + + def test_count(self): + self.assertEqual(self.lazy.count(2), 1) + + def test_index(self): + self.assertEqual(self.lazy.index(2), 1) + + def test_extend(self): + self.base.extend([6, 7]) + self.lazy.extend([6, 7]) + self.assertEqual(self.lazy, self.base) + + def test_insert(self): + self.base.insert(0, 'ping') + self.lazy.insert(0, 'ping') + self.assertEqual(self.lazy, self.base) + + def test_pop(self): + self.assertEqual(self.lazy.pop(), self.base.pop()) + self.assertEqual(self.lazy, self.base) + + def test_remove(self): + self.base.remove(2) + self.lazy.remove(2) + self.assertEqual(self.lazy, self.base) + + def test_reverse(self): + self.base.reverse() + self.lazy.reverse() + self.assertEqual(self.lazy, self.base) + + def test_reversed(self): + self.assertEqual(list(reversed(self.lazy)), list(reversed(self.base))) + + def test_sort(self): + self.base.sort() + self.assertNotEqual(self.lazy, self.base, 'Test data already sorted') + self.lazy.sort() + self.assertEqual(self.lazy, self.base) + + def test_sorted(self): + self.assertEqual(sorted(self.lazy), sorted(self.base)) + + def test_getitem(self): + for idx in range(-len(self.base), len(self.base)): + self.assertEqual(self.lazy[idx], self.base[idx]) + + def test_setitem(self): + for idx in range(-len(self.base), len(self.base)): + self.base[idx] = idx + 1000 + self.assertNotEqual(self.lazy, self.base) + self.lazy[idx] = idx + 1000 + self.assertEqual(self.lazy, self.base) + + def test_delitem(self): + del self.base[0] + self.assertNotEqual(self.lazy, self.base) + del self.lazy[0] + self.assertEqual(self.lazy, self.base) + + del self.base[-2] + self.assertNotEqual(self.lazy, self.base) + del self.lazy[-2] + self.assertEqual(self.lazy, self.base) + + def test_iter(self): + self.assertEqual(list(iter(self.lazy)), list(iter(self.base))) + + def test_getslice(self): + for i in range(-len(self.base), len(self.base)): + for j in range(-len(self.base), len(self.base)): + for step in [-1, 1]: + self.assertEqual(self.lazy[i:j:step], self.base[i:j:step]) + + def test_setslice(self): + for i in range(-len(self.base), len(self.base)): + for j in range(-len(self.base), len(self.base)): + for step in [-1, 1]: + replacement = range(0, len(self.base[i:j:step])) + self.base[i:j:step] = replacement + self.lazy[i:j:step] = replacement + self.assertEqual(self.lazy, self.base) + + def test_delslice(self): + del self.base[0:1] + del self.lazy[0:1] + self.assertEqual(self.lazy, self.base) + + del self.base[-1:1:-1] + del self.lazy[-1:1:-1] + self.assertEqual(self.lazy, self.base) + + +class LazySetTestCase(unittest.TestCase): + initial_data = set([3,2,1]) + + def setUp(self): + self.base = set([3, 2, 1]) + self.lazy = LazySet(iter(set(self.base))) + + def test_unary_ops(self): + # These ops just need to work. + unary_ops = [str, repr] + try: + unary_ops.append(unicode) + except NameError: + pass # unicode no longer exists in Python 3. + + for op in unary_ops: + op(self.lazy) # These ops just need to work. + + # These ops should return identical values as a real set. + unary_ops = [len, bool, not_] + + for op in unary_ops: + self.assertEqual( + op(self.lazy), + op(self.base), '%s(lazy) == %r' % (op, op(self.lazy))) + + def test_binary_ops(self): + binary_ops = [eq, ge, gt, le, lt, ne, sub, and_, or_, xor] + try: + binary_ops.append(cmp) + except NameError: + pass # cmp no longer exists in Python 3. + + for op in binary_ops: + self.assertEqual( + op(self.lazy, self.lazy), + op(self.base, self.base), str(op)) + self.assertEqual( + op(self.lazy, self.base), + op(self.base, self.base), str(op)) + self.assertEqual( + op(self.base, self.lazy), + op(self.base, self.base), str(op)) + + # Contains + self.assertTrue(2 in self.lazy) + self.assertFalse(42 in self.lazy) + + def test_iops(self): + try: + iops = [isub, iand, ior, ixor] + except NameError: + return # Don't exist in older Python versions. + for op in iops: + # Mutating operators, so make fresh copies. + lazy = LazySet(self.base) + base = self.base.copy() + op(lazy, set([1])) + op(base, set([1])) + self.assertEqual(lazy, base, str(op)) + + def test_bool(self): + self.assertTrue(bool(self.lazy)) + self.assertFalse(bool(LazySet())) + self.assertFalse(bool(LazySet(iter([])))) + + def test_hash(self): + self.assertRaises(TypeError, hash, self.lazy) + + def test_isinstance(self): + self.assertTrue(isinstance(self.lazy, set)) + + def test_callable(self): + try: + callable + except NameError: + return # No longer exists with Python 3. + self.assertFalse(callable(self.lazy)) + + def test_add(self): + self.base.add('extra') + self.lazy.add('extra') + self.assertEqual(self.lazy, self.base) + + def test_copy(self): + self.assertEqual(self.lazy.copy(), self.base) + + def test_method_ops(self): + ops = [ + 'difference', 'intersection', 'isdisjoint', + 'issubset', 'issuperset', 'symmetric_difference', 'union', + 'difference_update', 'intersection_update', + 'symmetric_difference_update', 'update'] + for op in ops: + if not hasattr(set, op): + continue # Not in this version of Python. + # Make a copy, as some of the ops are mutating. + lazy = LazySet(set(self.base)) + base = set(self.base) + self.assertEqual( + getattr(self.lazy, op)(set([1])), + getattr(self.base, op)(set([1])), op) + self.assertEqual(self.lazy, self.base, op) + + def test_discard(self): + self.base.discard(1) + self.assertNotEqual(self.lazy, self.base) + self.lazy.discard(1) + self.assertEqual(self.lazy, self.base) + + def test_pop(self): + self.assertEqual(self.lazy.pop(), self.base.pop()) + self.assertEqual(self.lazy, self.base) + + def test_remove(self): + self.base.remove(2) + self.lazy.remove(2) + self.assertEqual(self.lazy, self.base) + + def test_clear(self): + self.lazy.clear() + self.assertEqual(self.lazy, set()) + + +if __name__ == '__main__': + warnings.simplefilter("error") # Warnings should be fatal in tests. + unittest.main() |