def test_kv_store_decode_restores_encoded_event():
event = MetricsEvent(gen_next_timestamp(), gen_metrics_name(), 4.2)
k, v = KvStoreMetricsFormat.encode(event)
decoded_event = KvStoreMetricsFormat.decode(k, v)
assert event == decoded_event
def test_kv_store_encode_generate_different_keys_for_different_seq_no():
event = MetricsEvent(gen_next_timestamp(), gen_metrics_name(), 4.2)
k1, v1 = KvStoreMetricsFormat.encode(event, 1)
k2, v2 = KvStoreMetricsFormat.encode(event, 2)
assert k1 != k2
assert v1 == v2
def test_kv_store_metrics_collector_stores_properly_encoded_data(storage: KeyValueStorage, value):
ts = MockTimestamp(gen_next_timestamp())
metrics = KvStoreMetricsCollector(storage, ts)
assert len([(k, v) for k, v in storage.iterator()]) == 0
id = gen_metrics_name()
event = MetricsEvent(ts.value, id, value)
encoded_key, encoded_value = KvStoreMetricsFormat.encode(event)
metrics.add_event(id, value)
stored_events = [(k, v) for k, v in storage.iterator()]
assert len(stored_events) == 1
assert stored_events[0][0] == encoded_key
assert stored_events[0][1] == encoded_value