def test_simple():
a = dict()
b = dict()
buff = Buffer(a, b, n=10, weight=lambda k, v: v)
buff["x"] = 1
buff["y"] = 2
assert buff["x"] == 1
assert buff["y"] == 2
assert a == {"x": 1, "y": 2}
assert buff.fast.total_weight == 3
buff["z"] = 8
assert a == {"y": 2, "z": 8}
assert b == {"x": 1}
assert buff["x"] == 1
assert a == {"x": 1, "z": 8}
assert b == {"y": 2}
assert "x" in buff
assert "y" in buff
assert "missing" not in buff
buff["y"] = 1
assert a == {"x": 1, "y": 1, "z": 8}
assert buff.fast.total_weight == 10
assert b == {}
del buff["z"]
assert a == {"x": 1, "y": 1}
assert buff.fast.total_weight == 2
assert b == {}
del buff["y"]
assert a == {"x": 1}
assert buff.fast.total_weight == 1
assert b == {}
assert "y" not in buff
buff["a"] = 5
assert set(buff) == set(buff.keys()) == {"a", "x"}
fast_keys = set(buff.fast)
slow_keys = set(buff.slow)
assert not (fast_keys & slow_keys)
assert fast_keys | slow_keys == set(buff)
# Overweight element stays in slow mapping
buff["b"] = 1000
assert "b" in buff.slow
assert set(buff.fast) == fast_keys
assert set(buff.slow) == {"b"} | slow_keys
assert "b" in buff
assert buff["b"] == 1000
def test_simple():
a = dict()
b = dict()
buff = Buffer(a, b, n=10, weight=lambda k, v: v)
buff['x'] = 1
buff['y'] = 2
assert buff['x'] == 1
assert buff['y'] == 2
assert a == {'x': 1, 'y': 2}
assert buff.fast.total_weight == 3
buff['z'] = 8
assert a == {'y': 2, 'z': 8}
assert b == {'x': 1}
assert buff['x'] == 1
assert a == {'x': 1, 'z': 8}
assert b == {'y': 2}
assert 'x' in buff
assert 'y' in buff
assert 'missing' not in buff
buff['y'] = 1
assert a == {'x': 1, 'y': 1, 'z': 8}
assert buff.fast.total_weight == 10
assert b == {}
del buff['z']
assert a == {'x': 1, 'y': 1}
assert buff.fast.total_weight == 2
assert b == {}
del buff['y']
assert a == {'x': 1}
assert buff.fast.total_weight == 1
assert b == {}
assert 'y' not in buff
buff['a'] = 5
assert set(buff) == set(buff.keys()) == {'a', 'x'}
fast_keys = set(buff.fast)
slow_keys = set(buff.slow)
assert not (fast_keys & slow_keys)
assert fast_keys | slow_keys == set(buff)
# Overweight element stays in slow mapping
buff['b'] = 1000
assert 'b' in buff.slow
assert set(buff.fast) == fast_keys
assert set(buff.slow) == {'b'} | slow_keys
assert 'b' in buff
assert buff['b'] == 1000
def test_simple():
a = dict()
b = dict()
buff = Buffer(a, b, n=10, weight=lambda k, v: v)
buff['x'] = 1
buff['y'] = 2
assert buff['x'] == 1
assert buff['y'] == 2
assert a == {'x': 1, 'y': 2}
assert buff.fast.total_weight == 3
buff['z'] = 8
assert a == {'y': 2, 'z': 8}
assert b == {'x': 1}
assert buff['x'] == 1
assert a == {'x': 1, 'z': 8}
assert b == {'y': 2}
assert 'x' in buff
assert 'y' in buff
assert 'missing' not in buff
buff['y'] = 1
assert a == {'x': 1, 'y': 1, 'z': 8}
assert buff.fast.total_weight == 10
assert b == {}
del buff['z']
assert a == {'x': 1, 'y': 1}
assert buff.fast.total_weight == 2
assert b == {}
del buff['y']
assert a == {'x': 1}
assert buff.fast.total_weight == 1
assert b == {}
assert 'y' not in buff
buff['a'] = 5
assert set(buff) == set(buff.keys()) == {'a', 'x'}
fast_keys = set(buff.fast)
slow_keys = set(buff.slow)
assert not (fast_keys & slow_keys)
assert fast_keys | slow_keys == set(buff)
# Overweight element stays in slow mapping
buff['b'] = 1000
assert 'b' in buff.slow
assert set(buff.fast) == fast_keys
assert set(buff.slow) == {'b'} | slow_keys
assert 'b' in buff
assert buff['b'] == 1000
def test_simple():
a = dict()
b = dict()
buff = Buffer(a, b, n=10, weight=lambda k, v: v)
buff['x'] = 1
buff['y'] = 2
assert buff['x'] == 1
assert buff['y'] == 2
assert a == {'x': 1, 'y': 2}
assert buff.fast.total_weight == 3
buff['z'] = 8
assert a == {'y': 2, 'z': 8}
assert b == {'x': 1}
assert buff['x'] == 1
assert a == {'x': 1, 'z': 8}
assert b == {'y': 2}
assert 'x' in buff
assert 'y' in buff
assert 'missing' not in buff
del buff['z']
assert a == {'x': 1}
assert b == {'y': 2}
del buff['y']
assert a == {'x': 1}
assert b == {}
assert 'y' not in buff
buff['a'] = 5
assert set(buff) == set(buff.keys()) == {'a', 'x'}
fast_keys = set(buff.fast)
buff['b'] = 1000
assert 'b' in buff.slow
assert set(buff.fast) == fast_keys