public static async Task TestBasicFunctionalityAsync(this IStateStore store, string key)
{
const string STATE_1 = "state1";
const string STATE_2 = "state2";
AssertOk(await store.AddAsync(key, STATE_1));
AssertError(await store.AddAsync(key, STATE_1));
AssertError(await store.AddAsync(key, STATE_2));
AssertError(await store.UpdateAsync(key, STATE_2, STATE_2));
AssertOk(await store.UpdateAsync(key, STATE_1, STATE_2));
AssertError(await store.RemoveAsync(key, STATE_1));
AssertOk(await store.RemoveAsync(key, STATE_2));
AssertError(await store.RemoveAsync(key, STATE_1));
}