public async Task RevokeAsync_ShouldRevokeToken_WhenRefreshTokenExists()
{
var refreshToken = _fixture.Create <RefreshToken>();
var token = "randomTestToken";
_refreshTokenRepository.GetAsync(token).Returns(refreshToken);
await _sut.RevokeAsync(token);
refreshToken.Revoked.ShouldBeTrue();
await _refreshTokenRepository.Received(1).UpdateAsync(refreshToken);
}