Umbraco-CMS/tests/Umbraco.Tests.UnitTests/Umbraco.Core/BackOffice/IdentityExtensionsTests.cs

// Copyright (c) Umbraco.
// See LICENSE for more details.

using System;
using System.Collections.Generic;
using Microsoft.AspNetCore.Identity;
using NUnit.Framework;
using Umbraco.Extensions;

namespace Umbraco.Cms.Tests.UnitTests.Umbraco.Core.BackOffice
{
    public class IdentityExtensionsTests
    {
        [Test]
        public void ToErrorMessage_When_Errors_Are_Null_Expect_ArgumentNullException()
        {
            IEnumerable<IdentityError> errors = null;

            Assert.Throws<ArgumentNullException>(() => errors.ToErrorMessage());
        }

        [Test]
        public void ToErrorMessage_When_Single_Error_Expect_Error_Description()
        {
            const string expectedError = "invalid something";
            var errors = new List<IdentityError> { new IdentityError { Code = "1", Description = expectedError } };

            string errorMessage = errors.ToErrorMessage();

            Assert.AreEqual(expectedError, errorMessage);
        }

        [Test]
        public void ToErrorMessage_When_Multiple_Errors_Expect_Error_Descriptions_With_Comma_Delimiter()
        {
            const string error1 = "invalid something";
            const string error2 = "invalid something else";
            var errors = new List<IdentityError>
            {
                new IdentityError { Code = "1", Description = error1 },
                new IdentityError { Code = "2", Description = error2 }
            };

            string errorMessage = errors.ToErrorMessage();

            Assert.AreEqual($"{error1}, {error2}", errorMessage);
        }
    }
}