| import unittest |
| from test import test_support |
| from collections import NamedTuple |
| |
| class TestNamedTuple(unittest.TestCase): |
| |
| def test_factory(self): |
| Point = NamedTuple('Point', 'x y') |
| self.assertEqual(Point.__name__, 'Point') |
| self.assertEqual(Point.__doc__, 'Point(x, y)') |
| self.assertEqual(Point.__slots__, ()) |
| self.assertEqual(Point.__module__, __name__) |
| self.assertEqual(Point.__getitem__, tuple.__getitem__) |
| self.assertRaises(ValueError, NamedTuple, 'abc%', 'def ghi') |
| self.assertRaises(ValueError, NamedTuple, 'abc', 'def g%hi') |
| NamedTuple('Point0', 'x1 y2') # Verify that numbers are allowed in names |
| |
| def test_instance(self): |
| Point = NamedTuple('Point', 'x y') |
| p = Point(11, 22) |
| self.assertEqual(p, Point(x=11, y=22)) |
| self.assertEqual(p, Point(11, y=22)) |
| self.assertEqual(p, Point(y=22, x=11)) |
| self.assertEqual(p, Point(*(11, 22))) |
| self.assertEqual(p, Point(**dict(x=11, y=22))) |
| self.assertRaises(TypeError, Point, 1) # too few args |
| self.assertRaises(TypeError, Point, 1, 2, 3) # too many args |
| self.assertRaises(TypeError, eval, 'Point(XXX=1, y=2)', locals()) # wrong keyword argument |
| self.assertRaises(TypeError, eval, 'Point(x=1)', locals()) # missing keyword argument |
| self.assertEqual(repr(p), 'Point(x=11, y=22)') |
| self.assert_('__dict__' not in dir(p)) # verify instance has no dict |
| self.assert_('__weakref__' not in dir(p)) |
| |
| def test_tupleness(self): |
| Point = NamedTuple('Point', 'x y') |
| p = Point(11, 22) |
| |
| self.assert_(isinstance(p, tuple)) |
| self.assertEqual(p, (11, 22)) # matches a real tuple |
| self.assertEqual(tuple(p), (11, 22)) # coercable to a real tuple |
| self.assertEqual(list(p), [11, 22]) # coercable to a list |
| self.assertEqual(max(p), 22) # iterable |
| self.assertEqual(max(*p), 22) # star-able |
| x, y = p |
| self.assertEqual(p, (x, y)) # unpacks like a tuple |
| self.assertEqual((p[0], p[1]), (11, 22)) # indexable like a tuple |
| self.assertRaises(IndexError, p.__getitem__, 3) |
| |
| self.assertEqual(p.x, x) |
| self.assertEqual(p.y, y) |
| self.assertRaises(AttributeError, eval, 'p.z', locals()) |
| |
| |
| def test_main(verbose=None): |
| import collections as CollectionsModule |
| test_classes = [TestNamedTuple] |
| test_support.run_unittest(*test_classes) |
| test_support.run_doctest(CollectionsModule, verbose) |
| |
| if __name__ == "__main__": |
| test_main(verbose=True) |