File: IdentityResultAssert.cs
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Project: src\src\Identity\Specification.Tests\src\Microsoft.AspNetCore.Identity.Specification.Tests.csproj (Microsoft.AspNetCore.Identity.Specification.Tests)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Linq;
using Microsoft.Extensions.Logging;
using Xunit;
 
namespace Microsoft.AspNetCore.Identity.Test;
 
/// <summary>
/// Helper for tests to validate identity results.
/// </summary>
public static class IdentityResultAssert
{
    /// <summary>
    /// Asserts that the result has Succeeded.
    /// </summary>
    /// <param name="result"></param>
    public static void IsSuccess(IdentityResult result)
    {
        Assert.NotNull(result);
        Assert.True(result.Succeeded);
    }
 
    /// <summary>
    /// Asserts that the result has not Succeeded.
    /// </summary>
    public static void IsFailure(IdentityResult result)
    {
        Assert.NotNull(result);
        Assert.False(result.Succeeded);
    }
 
    /// <summary>
    /// Asserts that the result has not Succeeded and that error is the first Error's Description.
    /// </summary>
    public static void IsFailure(IdentityResult result, string error)
    {
        Assert.NotNull(result);
        Assert.False(result.Succeeded);
        Assert.Equal(error, result.Errors.First().Description);
    }
 
    /// <summary>
    /// Asserts that the result has not Succeeded and that first error matches error's code and Description.
    /// </summary>
    public static void IsFailure(IdentityResult result, IdentityError error = null)
    {
        Assert.NotNull(result);
        Assert.False(result.Succeeded);
        if (error != null)
        {
            Assert.Equal(error.Description, result.Errors.FirstOrDefault()?.Description);
            Assert.Equal(error.Code, result.Errors.FirstOrDefault()?.Code);
        }
    }
 
    /// <summary>
    /// Asserts that the logger contains the expectedLog.
    /// </summary>
    /// <param name="logger">The logger to inspect.</param>
    /// <param name="expectedLog">The expected log message.</param>
    public static void VerifyLogMessage(ILogger logger, string expectedLog)
    {
        var testlogger = logger as ITestLogger;
        if (testlogger != null)
        {
            Assert.Contains(expectedLog, testlogger.LogMessages);
        }
        else
        {
            Assert.Fail("No logger registered");
        }
    }
}