96 lines
4.0 KiB
C#
96 lines
4.0 KiB
C#
// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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using System;
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using System.Text.RegularExpressions;
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using Microsoft.Extensions.DependencyInjection;
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using Xunit;
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namespace Microsoft.Extensions.Logging.Testing.Tests
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{
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public class XunitLoggerProviderTest
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{
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[Fact]
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public void LoggerProviderWritesToTestOutputHelper()
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{
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var testTestOutputHelper = new TestTestOutputHelper();
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var loggerFactory = CreateTestLogger(builder => builder
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.SetMinimumLevel(LogLevel.Trace)
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.AddXunit(testTestOutputHelper));
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var logger = loggerFactory.CreateLogger("TestCategory");
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logger.LogInformation("This is some great information");
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logger.LogTrace("This is some unimportant information");
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var expectedOutput =
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"| [TIMESTAMP] TestCategory Information: This is some great information" + Environment.NewLine +
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"| [TIMESTAMP] TestCategory Trace: This is some unimportant information" + Environment.NewLine;
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Assert.Equal(expectedOutput, MakeConsistent(testTestOutputHelper.Output));
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}
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[Fact]
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public void LoggerProviderDoesNotWriteLogMessagesBelowMinimumLevel()
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{
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var testTestOutputHelper = new TestTestOutputHelper();
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var loggerFactory = CreateTestLogger(builder => builder
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.AddXunit(testTestOutputHelper, LogLevel.Warning));
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var logger = loggerFactory.CreateLogger("TestCategory");
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logger.LogInformation("This is some great information");
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logger.LogError("This is a bad error");
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Assert.Equal("| [TIMESTAMP] TestCategory Error: This is a bad error" + Environment.NewLine, MakeConsistent(testTestOutputHelper.Output));
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}
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[Fact]
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public void LoggerProviderPrependsPrefixToEachLine()
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{
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var testTestOutputHelper = new TestTestOutputHelper();
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var loggerFactory = CreateTestLogger(builder => builder
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.AddXunit(testTestOutputHelper));
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var logger = loggerFactory.CreateLogger("TestCategory");
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logger.LogInformation("This is a" + Environment.NewLine + "multi-line" + Environment.NewLine + "message");
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// The lines after the first one are indented more because the indentation was calculated based on the timestamp's actual length.
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var expectedOutput =
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"| [TIMESTAMP] TestCategory Information: This is a" + Environment.NewLine +
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"| multi-line" + Environment.NewLine +
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"| message" + Environment.NewLine;
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Assert.Equal(expectedOutput, MakeConsistent(testTestOutputHelper.Output));
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}
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[Fact]
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public void LoggerProviderDoesNotThrowIfOutputHelperThrows()
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{
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var testTestOutputHelper = new TestTestOutputHelper();
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var loggerFactory = CreateTestLogger(builder => builder
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.AddXunit(testTestOutputHelper));
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testTestOutputHelper.Throw = true;
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var logger = loggerFactory.CreateLogger("TestCategory");
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logger.LogInformation("This is a" + Environment.NewLine + "multi-line" + Environment.NewLine + "message");
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Assert.Equal(0, testTestOutputHelper.Output.Length);
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}
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private static readonly Regex TimestampRegex = new Regex(@"\d+-\d+-\d+T\d+:\d+:\d+");
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private string MakeConsistent(string input) => TimestampRegex.Replace(input, "TIMESTAMP");
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private static ILoggerFactory CreateTestLogger(Action<ILoggingBuilder> configure)
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{
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return new ServiceCollection()
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.AddLogging(configure)
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.BuildServiceProvider()
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.GetRequiredService<ILoggerFactory>();
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}
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}
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}
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