def test_uses_cache_on_hit(self):
"""Ensure that we actually do use the cache when available."""
# put it in the cache
fallback = mock.Mock(return_value='asdf')
cache_lookup_with_fallback('key', fallback)
fallback.assert_called_once_with()
# retrieve from cache
fallback2 = mock.Mock(return_value='gggg')
result = cache_lookup_with_fallback('key', fallback2)
fallback2.assert_not_called()
assert result == fallback.return_value
def test_uses_cache_on_hit(self):
"""Ensure that we actually do use the cache when available."""
# put it in the cache
fallback = mock.Mock(return_value='asdf')
cache_lookup_with_fallback('key', fallback)
fallback.assert_called_once_with()
# retrieve from cache
fallback2 = mock.Mock(return_value='gggg')
result = cache_lookup_with_fallback('key', fallback2)
fallback2.assert_not_called()
assert result == fallback.return_value
def test_evaluates_fallback_on_miss(self):
"""Ensure that if we miss, we call the fallback."""
fallback = mock.Mock(return_value='asdf')
result = cache_lookup_with_fallback('key', fallback)
fallback.assert_called_once_with()
assert result == fallback.return_value
def test_evaluates_fallback_on_miss(self):
"""Ensure that if we miss, we call the fallback."""
fallback = mock.Mock(return_value='asdf')
result = cache_lookup_with_fallback('key', fallback)
fallback.assert_called_once_with()
assert result == fallback.return_value
