public async Task success_get()
{
PersistedGrant persistedGrant = null;
Should.NotThrow(() =>
{
persistedGrant = GetAsync(_key).GetAwaiter().GetResult();
});
persistedGrant.ShouldNotBeNull();
(persistedGrant.Key == _key).ShouldBeTrue();
persistedGrant.Key.ShouldNotBeNullOrWhiteSpace();
persistedGrant.Key.ShouldBe(_key);
persistedGrant.ClientId.ShouldBe(_clientId);
}