Added Unit tests for Logger

Tests/Tests.DiscordBotCore.Logging/LoggerTests.cs

@@ -0,0 +1,46 @@
+using DiscordBotCore.Logging;
+
+namespace Tests.DiscordBotCore.Logging;
+
+public class LoggerTests
+{
+    private readonly string logFolder = Path.GetTempPath();
+    private readonly string format = "{Message} | {SenderName} | {LogMessageType}";
+
+    [Fact]
+    public void Log_AddsMessageToList()
+    {
+        ILogger logger = new Logger(logFolder, format, maxHistorySize: 5);
+
+        logger.Log("Test message");
+
+        Assert.Single(logger.LogMessages);
+        Assert.Equal("Test message", logger.LogMessages[0].Message);
+    }
+
+    [Fact]
+    public void Log_TriggersOnLogReceived()
+    {
+        ILogger logger = new Logger(logFolder, format, maxHistorySize: 5);
+        bool triggered = false;
+        logger.OnLogReceived += (_) => triggered = true;
+
+        logger.Log("Test message");
+
+        Assert.True(triggered);
+    }
+
+    [Fact]
+    public void Log_RespectsMaxHistorySize()
+    {
+        ILogger logger = new Logger(logFolder, format, maxHistorySize: 3);
+
+        logger.Log("1");
+        logger.Log("2");
+        logger.Log("3");
+        logger.Log("4");
+
+        Assert.Equal(3, logger.LogMessages.Count);
+        Assert.DoesNotContain(logger.LogMessages, m => m.Message == "1");
+    }
+}

Tests/Tests.DiscordBotCore.Logging/Tests.DiscordBotCore.Logging.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+
+        <IsPackable>false</IsPackable>
+        <IsTestProject>true</IsTestProject>
+        <RootNamespace>Tests.DiscordBotCore.Logging</RootNamespace>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="coverlet.collector" Version="6.0.0"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0"/>
+        <PackageReference Include="xunit" Version="2.5.3"/>
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Using Include="Xunit"/>
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\..\DiscordBotCore.Logging\DiscordBotCore.Logging.csproj" />
+    </ItemGroup>
+
+</Project>