public async Task GenerateAccessToken_Returns_AccessToken()
{
//Arrange
var adminUser = _myRestaurantContext.Users.ToList().First(d => d.FirstName == "Admin");
var userClaims = _myRestaurantContext.UserClaims.ToList()
.Where(d => d.UserId == adminUser.Id)
.Select(d => new Claim(d.ClaimType, d.ClaimValue)).ToList();
_fixture.MockUserManager.Setup(x => x.GetClaimsAsync(adminUser))
.ReturnsAsync(userClaims);
_fixture.MockUserManager.Setup(x => x.GetRolesAsync(adminUser))
.ReturnsAsync(adminUser.UserRoles.Select(d => d.Role.Name).ToList());
var service = new JwtTokenService(_fixture.MockUserManager.Object, _myRestaurantContext, _fixture.JwtSettings);
//Act
var result = await service.GenerateAccessToken(adminUser);
//Assert
result.Should().BeAssignableTo <string>();
}