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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()
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