600 lines
22 KiB
Python
600 lines
22 KiB
Python
import pytest
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from cache.BaseCache import MAX_INITIALIZED_KEY
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from cache.Cache import Cache
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from cache.CacheManager import CacheManager
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from cache.DictionaryCache import DictionaryCache
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from cache.IncCache import IncCache
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from cache.ListCache import ListCache
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from cache.ListIfNeededCache import ListIfNeededCache
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from cache.SetCache import SetCache
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from core.concept import Concept
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from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka
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class TestCache(TestUsingMemoryBasedSheerka):
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def test_i_can_get_an_retrieve_value_from_cache(self):
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cache = Cache()
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cache.put("key", "value")
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assert cache.get("key") == "value"
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assert len(cache) == 1
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cache.put("key", "another value") # another value in the cache replace the previous one
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assert cache.get("key") == "another value"
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assert len(cache) == 1
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cache.put("key2", "value2") # another key
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assert cache.get("key2") == "value2"
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assert len(cache) == 2
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assert cache.copy() == {"key": "another value", "key2": "value2"}
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def test_i_can_evict(self):
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maxsize = 5
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cache = Cache(max_size=5)
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for key in range(maxsize):
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cache.put(key, key)
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assert len(cache) == maxsize
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assert cache.has(0)
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for key in range(maxsize, maxsize * 2):
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cache.put(key, key)
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assert len(cache) == maxsize
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assert not cache.has(key - maxsize)
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def test_i_can_get_default_value_from_simple_cache(self):
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cache = Cache()
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assert cache.get("key") is None
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cache = Cache(default=10)
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assert cache.get("key") == 10
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assert "key" not in cache # default value are not put in cache
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cache = Cache(default=lambda key: key + "_not_found")
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assert cache.get("key") == "key_not_found"
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assert "key" in cache # default callable are put in cache
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def test_i_dont_ask_the_remote_repository_twice(self):
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nb_request = []
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cache = Cache(default=lambda key: nb_request.append("requested"))
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assert cache.get("key") is None
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assert cache.get("key") is None
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assert len(nb_request) == 1
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def test_i_can_put_and_retrieve_value_from_list_cache(self):
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cache = ListCache()
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cache.put("key", "value")
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assert cache.get("key") == ["value"]
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assert len(cache) == 1
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cache.put("key", "value2") # we can append to this list
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assert cache.get("key") == ["value", "value2"]
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assert len(cache) == 2
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cache.put("key2", "value")
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assert cache.get("key2") == ["value"]
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assert len(cache) == 3
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# duplicates are allowed
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cache.put("key", "value")
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assert cache.get("key") == ["value", "value2", "value"]
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assert len(cache) == 4
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assert cache.copy() == {'key': ['value', 'value2', 'value'], 'key2': ['value']}
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def test_i_can_put_and_retrieve_value_from_list_if_needed_cache(self):
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cache = ListIfNeededCache()
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cache.put("key", "value")
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assert cache.get("key") == "value"
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# second time with the same key creates a list
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cache.put("key", "value2")
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assert cache.get("key") == ["value", "value2"]
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assert len(cache) == 2
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# third time, we now have a list
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cache.put("key", "value3")
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assert cache.get("key") == ["value", "value2", "value3"]
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assert len(cache) == 3
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# other keys are not affected
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cache.put("key2", "value")
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assert cache.get("key2") == "value"
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assert len(cache) == 4
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# duplicates are allowed
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cache.put("key", "value")
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assert cache.get("key") == ["value", "value2", "value3", "value"]
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assert len(cache) == 5
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def test_i_can_put_and_retrieve_values_from_set_cache(self):
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cache = SetCache()
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cache.put("key", "value")
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assert cache.get("key") == {"value"}
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assert len(cache) == 1
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# we can add to this set
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cache.put("key", "value2")
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assert cache.get("key") == {"value", "value2"}
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assert len(cache) == 2
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# other keys are not affected
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cache.put("key2", "value")
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assert cache.get("key2") == {"value"}
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assert len(cache) == 3
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# duplicates are removed
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cache.put("key", "value")
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assert cache.get("key") == {"value", "value2"}
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assert len(cache) == 3
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assert cache.copy() == {'key': {'value', 'value2'}, 'key2': {'value'}}
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def test_i_can_put_and_retrieve_value_from_dictionary_cache(self):
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cache = DictionaryCache()
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# # key must be None
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# with pytest.raises(KeyError):
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# cache.put("key", None)
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#
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# # value must be a dictionary
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# with pytest.raises(ValueError):
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# cache.put(True, "value")
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entry = {"key": "value", "key2": ["value21", "value22"]}
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cache.put(False, entry)
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assert len(cache) == 3
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assert id(cache._cache) == id(entry)
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assert cache.get("key") == "value"
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assert cache.get("key2") == ["value21", "value22"]
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# I can append values
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cache.put(True, {"key": "another_value", "key3": "value3"})
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assert len(cache) == 4
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assert cache.get("key") == "another_value"
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assert cache.get("key2") == ["value21", "value22"]
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assert cache.get("key3") == "value3"
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# I can reset
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entry = {"key": "value", "key2": ["value21", "value22"]}
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cache.put(False, entry)
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assert len(cache) == 3
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assert id(cache._cache) == id(entry)
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assert cache.get("key") == "value"
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assert cache.get("key2") == ["value21", "value22"]
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assert cache.copy() == {'key': 'value', 'key2': ['value21', 'value22']}
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def test_i_can_put_and_retrieve_values_from_inc_cache(self):
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cache = IncCache()
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assert cache.get("key") == 1
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assert cache.get("key") == 2
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assert cache.get("key") == 3
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assert cache.get("key2") == 1
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assert cache.get("key2") == 2
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cache.put("key", 100)
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assert cache.get("key") == 101
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assert cache.copy() == {'key': 101, 'key2': 2}
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@pytest.mark.parametrize("key", [
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None,
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"something"
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])
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def test_keys_have_constraints_when_dictionary_cache(self, key):
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cache = DictionaryCache()
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with pytest.raises(KeyError):
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cache.put(key, None)
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@pytest.mark.parametrize("value", [
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None,
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"something"
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])
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def test_values_have_constraints_when_dictionary_cache(self, value):
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cache = DictionaryCache()
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with pytest.raises(ValueError):
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cache.put(True, value)
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def test_i_can_append_to_a_dictionary_cache_even_if_it_s_new(self):
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cache = DictionaryCache()
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entry = {"key": "value", "key2": ["value21", "value22"]}
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cache.put(True, entry)
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assert len(cache) == 3
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assert id(cache._cache) != id(entry)
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assert cache.get("key") == "value"
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assert cache.get("key2") == ["value21", "value22"]
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def test_i_can_update_from_simple_cache(self):
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cache = Cache()
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cache.put("key", "value")
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cache.update("key", "value", "key", "new_value")
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assert len(cache._cache) == 1
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assert len(cache) == 1
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assert cache.get("key") == "new_value"
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cache.update("key", "new_value", "another_key", "another_value")
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assert len(cache._cache) == 1
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assert len(cache) == 1
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assert cache.get("key") is None
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assert cache.get("another_key") == "another_value"
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with pytest.raises(KeyError):
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cache.update("wrong key", "value", "key", "value")
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def test_i_can_update_from_list_cache(self):
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cache = ListCache()
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cache.put("key", "value")
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cache.put("key", "value2")
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cache.put("key", "value")
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cache.update("key", "value", "key", "another value")
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assert len(cache._cache) == 1
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assert len(cache) == 3
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assert cache.get("key") == ["another value", "value2", "value"] # only the first one is affected
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cache.update("key", "value2", "key2", "value2")
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assert len(cache._cache) == 2
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assert len(cache) == 3
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assert cache.get("key") == ["another value", "value"]
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assert cache.get("key2") == ["value2"]
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cache.update("key2", "value2", "key3", "value2")
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assert len(cache._cache) == 2
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assert len(cache) == 3
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assert cache.get("key") == ["another value", "value"]
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assert cache.get("key3") == ["value2"]
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assert cache.get("key2") is None
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with pytest.raises(KeyError):
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cache.update("wrong key", "value", "key", "value")
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def test_i_can_update_from_list_if_needed_cache(self):
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cache = ListIfNeededCache()
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cache.put("key", "value")
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cache.put("key", "value2")
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cache.put("key", "value")
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cache.update("key", "value", "key", "another value")
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assert len(cache._cache) == 1
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assert len(cache) == 3
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assert cache.get("key") == ["another value", "value2", "value"] # only the first one is affected
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cache.update("key", "value2", "key2", "value2")
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assert len(cache._cache) == 2
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assert len(cache) == 3
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assert cache.get("key") == ["another value", "value"]
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assert cache.get("key2") == "value2"
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cache.update("key2", "value2", "key3", "value2")
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assert len(cache._cache) == 2
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assert len(cache) == 3
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assert cache.get("key") == ["another value", "value"]
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assert cache.get("key3") == "value2"
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assert cache.get("key2") is None
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with pytest.raises(KeyError):
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cache.update("wrong key", "value", "key", "value")
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def test_i_can_update_from_set_cache(self):
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cache = SetCache()
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cache.put("key", "value")
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cache.put("key", "value2")
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cache.update("key", "value", "key", "another value")
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assert len(cache._cache) == 1
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assert len(cache) == 2
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assert cache.get("key") == {"another value", "value2"}
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cache.update("key", "value2", "key2", "value2")
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assert len(cache._cache) == 2
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assert len(cache) == 2
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assert cache.get("key") == {"another value"}
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assert cache.get("key2") == {"value2"}
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cache.update("key", "another value", "key3", "another value")
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assert len(cache._cache) == 2
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assert len(cache) == 2
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assert cache.get("key") is None
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assert cache.get("key2") == {"value2"}
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assert cache.get("key3") == {"another value"}
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with pytest.raises(KeyError):
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cache.update("wrong key", "value", "key", "value")
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@pytest.mark.parametrize("cache", [
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Cache(), ListCache(), ListIfNeededCache(), SetCache(), IncCache()
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])
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def test_i_can_manage_cache_events(self, cache):
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cache.put("key", "value")
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assert cache.to_add == {"key"}
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assert cache.to_remove == set()
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cache.update("key", "value", "key", "another value")
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assert cache.to_add == {"key"}
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assert cache.to_remove == set()
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cache.update("key", "another value", "key2", "value2")
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assert cache.to_add == {"key2"}
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assert cache.to_remove == {"key"}
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cache.update("key2", "value2", "key", "value")
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assert cache.to_add == {"key"}
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assert cache.to_remove == {"key2"}
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@pytest.mark.parametrize("cache", [
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ListCache(), SetCache(), ListIfNeededCache()
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])
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def test_i_can_manage_list_and_set_cache_events(self, cache):
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cache.put("key", "value")
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cache.put("key", "value2")
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assert cache.to_add == {"key"}
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assert cache.to_remove == set()
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cache.update("key", "value", "key", "another value")
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assert cache.to_add == {"key"}
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assert cache.to_remove == set()
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cache.update("key", "value2", "key2", "value2")
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assert cache.to_add == {"key", "key2"}
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assert cache.to_remove == set()
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cache.update("key", "another value", "key3", "another value")
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assert cache.to_add == {"key2", "key3"}
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assert cache.to_remove == {"key"}
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@pytest.mark.parametrize("cache", [
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Cache(), ListCache(), SetCache(), ListIfNeededCache(), IncCache()
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])
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def test_exists(self, cache):
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assert not cache.exists("key")
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cache.put("key", "value")
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assert cache.exists("key")
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def test_exists_in_dictionary_cache(self):
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cache = DictionaryCache()
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assert not cache.exists("key")
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cache.put(True, {"key": "value"})
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assert cache.exists("key")
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def test_exists_extend(self):
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cache = Cache(extend_exists=lambda k: True if k == "special_key" else False)
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assert not cache.exists("key")
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assert cache.exists("special_key")
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def test_add_concept_fills_all_dependent_caches(self):
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sheerka, context, one, two, two_2, three = self.init_concepts("one", "two", Concept("two"), "three")
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cache_manager = CacheManager(None)
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cache_manager.register_concept_cache("by_id", Cache(), lambda obj: obj.id, True)
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cache_manager.register_concept_cache("by_name", ListCache(), lambda obj: obj.name, True)
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cache_manager.register_concept_cache("by_name2", ListIfNeededCache(), lambda obj: obj.name, True)
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cache_manager.add_concept(one)
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cache_manager.add_concept(two)
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cache_manager.add_concept(two_2)
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cache_manager.add_concept(three)
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assert len(cache_manager.caches) == 3
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assert cache_manager.caches["by_id"].cache._cache == {
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"1001": one,
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"1002": two,
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"1003": two_2,
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"1004": three,
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}
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assert cache_manager.caches["by_name"].cache._cache == {
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"one": [one],
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"two": [two, two_2],
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"three": [three]
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}
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assert cache_manager.caches["by_name2"].cache._cache == {
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"one": one,
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"two": [two, two_2],
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"three": three
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}
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assert cache_manager.get("by_id", "1002") == two
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assert cache_manager.get("by_name", "two") == [two, two_2]
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assert cache_manager.get("by_name2", "two") == [two, two_2]
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def test_default_for_dictionary_cache(self):
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cache = DictionaryCache(default={"key": "value", "key2": "value2"})
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assert cache.get("key") == "value"
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assert "key2" in cache
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assert len(cache) == 2
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cache.clear()
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assert cache.get("key3") is None
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assert len(cache) == 2
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assert "key" in cache
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assert "key2" in cache
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# default is not modified
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cache._cache["key"] = "another value" # operation that is normally not possible
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cache.clear()
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assert cache.get("key") == "value"
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def test_default_callable_for_dictionary_cache(self):
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cache = DictionaryCache(default=lambda k: {"key": "value", "key2": "value2"})
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assert cache.get("key") == "value"
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assert "key2" in cache
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assert len(cache) == 2
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cache.clear()
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assert cache.get("key3") is None
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assert len(cache) == 2
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assert "key" in cache
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assert "key2" in cache
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def test_dictionary_cache_cannot_be_null(self):
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cache = DictionaryCache(default=lambda k: None)
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assert cache.get("key") is None
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assert cache._cache == {}
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cache = DictionaryCache(default=None)
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assert cache.get("key") is None
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assert cache._cache == {}
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@pytest.mark.parametrize("cache, default, new_value, expected", [
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(ListCache(), lambda k: None, "value", ["value"]),
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(ListCache(), lambda k: ["value"], "value", ["value", "value"]),
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(ListIfNeededCache(), lambda k: None, "value", "value"),
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(ListIfNeededCache(), lambda k: "value", "value1", ["value", "value1"]),
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(ListIfNeededCache(), lambda k: ["value1", "value2"], "value1", ["value1", "value2", "value1"]),
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(SetCache(), lambda k: None, "value", {"value"}),
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(SetCache(), lambda k: {"value"}, "value", {"value"}),
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(SetCache(), lambda k: {"value1"}, "value2", {"value1", "value2"}),
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])
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def test_default_is_called_before_put_to_keep_in_sync(self, cache, default, new_value, expected):
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cache.configure(default=default)
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cache.put("key", new_value)
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assert cache.get("key") == expected
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def test_default_is_called_before_updating_simple_cache(self):
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cache = Cache(default=lambda k: None)
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with pytest.raises(KeyError):
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cache.update("old_key", "old_value", "new_key", "new_value")
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cache = Cache(default=lambda k: "old_value")
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cache.update("old_key", "old_value", "new_key", "new_value")
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assert cache.get("new_key") == "new_value"
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def test_default_is_called_before_updating_list_cache(self):
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cache = ListCache(default=lambda k: None)
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with pytest.raises(KeyError):
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cache.update("old_key", "old_value", "new_key", "new_value")
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cache = ListCache(default=lambda k: ["old_value", "other old value"])
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cache.update("old_key", "old_value", "old_key", "new_value")
|
|
assert cache.get("old_key") == ["new_value", "other old value"]
|
|
|
|
cache = ListCache(default=lambda k: ["old_value", "other old value"] if k == "old_key" else None)
|
|
cache.update("old_key", "old_value", "new_key", "new_value")
|
|
assert cache.get("old_key") == ["other old value"]
|
|
assert cache.get("new_key") == ["new_value"]
|
|
|
|
cache = ListCache(default=lambda k: ["old_value", "other old value"] if k == "old_key" else ["other new"])
|
|
cache.update("old_key", "old_value", "new_key", "new_value")
|
|
assert cache.get("old_key") == ["other old value"]
|
|
assert cache.get("new_key") == ["other new", "new_value"]
|
|
|
|
def test_default_is_called_before_updating_list_if_needed_cache(self):
|
|
cache = ListIfNeededCache(default=lambda k: None)
|
|
with pytest.raises(KeyError):
|
|
cache.update("old_key", "old_value", "new_key", "new_value")
|
|
|
|
cache = ListIfNeededCache(default=lambda k: "old_value")
|
|
cache.update("old_key", "old_value", "old_key", "new_value")
|
|
assert cache.get("old_key") == "new_value"
|
|
|
|
cache = ListIfNeededCache(default=lambda k: ["old_value", "other old value"])
|
|
cache.update("old_key", "old_value", "old_key", "new_value")
|
|
assert cache.get("old_key") == ["new_value", "other old value"]
|
|
|
|
cache = ListIfNeededCache(default=lambda k: ["old_value", "other old value"] if k == "old_key" else None)
|
|
cache.update("old_key", "old_value", "new_key", "new_value")
|
|
assert cache.get("old_key") == ["other old value"]
|
|
assert cache.get("new_key") == "new_value"
|
|
|
|
def test_default_is_called_before_updating_set_cache(self):
|
|
cache = SetCache(default=lambda k: None)
|
|
with pytest.raises(KeyError):
|
|
cache.update("old_key", "old_value", "new_key", "new_value")
|
|
|
|
cache = SetCache(default=lambda k: {"old_value", "other old value"})
|
|
cache.update("old_key", "old_value", "old_key", "new_value")
|
|
assert cache.get("old_key") == {"new_value", "other old value"}
|
|
|
|
cache = SetCache(default=lambda k: {"old_value", "other old value"} if k == "old_key" else None)
|
|
cache.update("old_key", "old_value", "new_key", "new_value")
|
|
assert cache.get("old_key") == {"other old value"}
|
|
assert cache.get("new_key") == {"new_value"}
|
|
|
|
cache = SetCache(default=lambda k: {"old_value", "other old value"} if k == "old_key" else {"other new"})
|
|
cache.update("old_key", "old_value", "new_key", "new_value")
|
|
assert cache.get("old_key") == {"other old value"}
|
|
assert cache.get("new_key") == {"other new", "new_value"}
|
|
|
|
def test_i_can_delete_an_entry_from_cache(self):
|
|
cache = Cache()
|
|
cache.put("key", "value")
|
|
|
|
assert cache.get("key") == "value"
|
|
cache.delete("key")
|
|
assert cache.get("value") is None
|
|
assert cache.to_remove == {"key"}
|
|
|
|
def test_initialized_key_is_removed_when_the_entry_is_found(self):
|
|
caches = [Cache(), ListCache(), ListIfNeededCache(), SetCache()]
|
|
|
|
for cache in caches:
|
|
cache.put("key", "value")
|
|
cache.get("key")
|
|
|
|
assert len(cache._initialized_keys) == 0
|
|
|
|
cache = IncCache()
|
|
cache.put("key", 10)
|
|
cache.get("key")
|
|
assert len(cache._initialized_keys) == 0
|
|
|
|
def test_initialized_keys_are_reset_when_max_length_is_reached(self):
|
|
cache = Cache()
|
|
for i in range(MAX_INITIALIZED_KEY):
|
|
cache.get(str(i))
|
|
|
|
assert len(cache._initialized_keys) == MAX_INITIALIZED_KEY
|
|
|
|
cache.get(str(MAX_INITIALIZED_KEY + 1))
|
|
assert len(cache._initialized_keys) == 1
|
|
|
|
def test_i_can_populate(self):
|
|
items = [("1", "1"), ("2", "2"), ("3", "3")]
|
|
cache = Cache()
|
|
|
|
cache.populate(lambda: items, lambda item: item[0])
|
|
|
|
assert len(cache) == 3
|
|
assert cache.get("1") == ("1", "1")
|
|
assert cache.get("2") == ("2", "2")
|
|
assert cache.get("3") == ("3", "3")
|
|
|
|
def test_max_size_is_respected_when_populate(self):
|
|
items = [("1", "1"), ("2", "2"), ("3", "3"), ("4", "4"), ("5", "5")]
|
|
cache = Cache(max_size=3)
|
|
|
|
cache.populate(lambda: items, lambda item: item[0])
|
|
|
|
assert len(cache) == 3
|
|
assert cache.get("3") == ("3", "3")
|
|
assert cache.get("4") == ("4", "4")
|
|
assert cache.get("5") == ("5", "5")
|
|
|
|
def test_i_can_get_all(self):
|
|
items = [("1", "1"), ("2", "2"), ("3", "3")]
|
|
cache = Cache()
|
|
|
|
cache.populate(lambda: items, lambda item: item[0])
|
|
|
|
res = cache.get_all()
|
|
assert len(res) == 3
|
|
assert list(res) == [('1', '1'), ('2', '2'), ('3', '3')]
|