def test_value_is_only_written_when_newer_then_current(redis_store):
registry = TimestampRegistry(redis_con)
redis_store = RedisStore(redis_con, registry)
redis_store.store("hello", "world", 0)
assert redis_store.lookup("hello").value == "world"
registry.increment_state_timestamp("hello")
redis_store.store("hello", "new_world", 0)
assert redis_store.lookup("hello").value == "world"
redis_store.store("hello", "new_world", 1)
assert redis_store.lookup("hello").value == "new_world"
def test_retry_method_works_with_cache_overwrite(monkeypatch):
redis_store = RedisStore(redis_con,
TimestampRegistry(redis_con),
retry_backoff=lambda: 0)
global retries
retries = 0
def test_cache_update(cache_entry, pipe):
global retries
retries += 1
redis_con.hset(cache_entry.key, "random_key", "random_value")
pipe.multi()
pipe.hset(cache_entry.key, "value", json.dumps(cache_entry.value))
pipe.execute()
monkeypatch.setattr(redis_store, '_update_cache_entry', test_cache_update)
redis_store.store("hello", "world", 0)
assert redis_store.lookup("hello").value is None
assert retries == 5
def test_retry_method_works_with_timestamp_overwrite(monkeypatch):
ts_registry = TimestampRegistry(redis_con)
redis_store = RedisStore(redis_con, ts_registry, retry_backoff=lambda: 0)
global retries
retries = 0
def test_cache_update(cache_entry, pipe):
global retries
retries += 1
ts_key = ts_registry.value_ts_key(cache_entry.key)
redis_con.set(ts_key, -500)
pipe.multi()
pipe.set(ts_key, 5)
pipe.execute()
monkeypatch.setattr(redis_store, '_update_cache_entry', test_cache_update)
redis_store.store("hello", "world", 0)
assert redis_store.lookup("hello").value is None
assert retries == 5
def test_retry_method_works_with_timestamp_overwrite(monkeypatch):
ts_registry = TimestampRegistry(redis_con)
redis_store = RedisStore(redis_con, ts_registry, retry_backoff=lambda: 0)
global retries
retries = 0
def test_cache_update(cache_entry, pipe):
global retries
retries += 1
ts_key = ts_registry.value_ts_key(cache_entry.key)
redis_con.set(ts_key, -500)
pipe.multi()
pipe.set(ts_key, 5)
pipe.execute()
monkeypatch.setattr(redis_store, '_update_cache_entry', test_cache_update)
redis_store.store("hello", "world", 0)
assert redis_store.lookup("hello").value is None
assert retries == 5
def test_retry_method_works_with_cache_overwrite(monkeypatch):
redis_store = RedisStore(
redis_con,
TimestampRegistry(redis_con),
retry_backoff=lambda: 0
)
global retries
retries = 0
def test_cache_update(cache_entry, pipe):
global retries
retries += 1
redis_con.hset(cache_entry.key, "random_key", "random_value")
pipe.multi()
pipe.hset(cache_entry.key, "value", json.dumps(cache_entry.value))
pipe.execute()
monkeypatch.setattr(redis_store, '_update_cache_entry', test_cache_update)
redis_store.store("hello", "world", 0)
assert redis_store.lookup("hello").value is None
assert retries == 5
def test_value_is_only_written_when_newer_then_current(redis_store):
registry = TimestampRegistry(redis_con)
redis_store = RedisStore(redis_con, registry)
redis_store.store("hello", "world", 0)
assert redis_store.lookup("hello").value == "world"
registry.increment_state_timestamp("hello")
redis_store.store("hello", "new_world", 0)
assert redis_store.lookup("hello").value == "world"
redis_store.store("hello", "new_world", 1)
assert redis_store.lookup("hello").value == "new_world"
def redis_store():
yield RedisStore(redis_con, TimestampRegistry(redis_con))
