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Viewing changes to bzrlib/tests/test__static_tuple_interned.py

Implement resizing.

It can resize up or down, but right now we never shrink.

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bzrlib/tests/test__static_tuple_interned.py
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        self.assertRefcount(2, k3)
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        del obj[k3]
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        self.assertRefcount(1, k3)
 
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    def test__resize(self):
 
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        obj = _module.StaticTupleInterner()
 
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        k1 = StaticTuple('foo')
 
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        k2 = StaticTuple('bar')
 
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        k3 = StaticTuple('baz')
 
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        obj.add(k1)
 
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        obj.add(k2)
 
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        obj.add(k3)
 
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        del obj[k2]
 
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        self.assertFillState(2, 3, 0x3ff, obj)
 
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        self.assertEqual(1024, obj._resize(500))
 
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        self.assertFillState(2, 3, 0x3ff, obj)
 
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        self.assertEqual(4096, obj._resize(4095))
 
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        self.assertFillState(2, 2, 0xfff, obj)
 
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        self.assertIn(k1, obj)
 
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        self.assertNotIn(k2, obj)
 
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        self.assertIn(k3, obj)
 
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        obj.add(k2)
 
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        self.assertIn(k2, obj)
 
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        del obj[k2]
 
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        self.assertEqual((591, '<dummy>'), obj._test_lookup(k2))
 
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        self.assertFillState(2, 3, 0xfff, obj)
 
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        self.assertEqual(2048, obj._resize(1024))
 
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        self.assertFillState(2, 2, 0x7ff, obj)
 
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        self.assertEqual((591, '<null>'), obj._test_lookup(k2))
 
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    def test_add_lots_of_items(self):
 
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        obj = _module.StaticTupleInterner()
 
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        chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890'
 
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        for i in chars:
 
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            for j in chars:
 
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                k = StaticTuple(i, j)
 
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                obj.add(k)
 
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        num = len(chars)*len(chars)
 
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        self.assertFillState(num, num, 0x1fff, obj)