Added test project

CSV Metrics Logger.sln

@@ -4,6 +4,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CSV Metrics Logger", "CSV M
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CSV Metrics Logger Generator", "CSV Metrics Logger Generator\CSV Metrics Logger Generator.csproj", "{559505B4-5322-4CFD-ABB9-D835C2A7EC09}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tests", "Tests\Tests.csproj", "{871708D2-633C-4D78-86EF-A1B72043B652}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU

Tests/TestDataOneLine.cs

@@ -0,0 +1,6 @@
+using CSV_Metrics_Logger;
+
+namespace Tests;
+
+[CSVRecord]
+public readonly partial record struct TestDataOneLine(string Name, sbyte Age);

Tests/TestDataRecordStructMixed.cs

@@ -0,0 +1,9 @@
+using CSV_Metrics_Logger;
+
+namespace Tests;
+
+[CSVRecord]
+public readonly partial record struct TestDataRecordStructMixed(string Area, int Step, float Value, int Z)
+{
+    public bool State { get; init; }
+}

Tests/TestDataRegularStruct.cs

@@ -0,0 +1,13 @@
+using CSV_Metrics_Logger;
+
+namespace Tests;
+
+[CSVRecord]
+public partial struct TestDataRegularStruct
+{
+    public string City { get; set; }
+
+    public uint Age { get; set; }
+
+    public double Size { get; set; }
+}

Tests/Tests.cs

@@ -0,0 +1,84 @@
+using System.Diagnostics.CodeAnalysis;
+
+namespace Tests;
+
+[ExcludeFromCodeCoverage]
+public sealed class Tests
+{
+    [Test]
+    public void TestBasicImplementation()
+    {
+        var testData = new TestDataRecordStructMixed("Area1", 1, 1.1f, 7);
+        Assert.Multiple(() =>
+        {
+            Assert.That(typeof(TestDataRecordStructMixed).GetInterface("IConvertToCSV"), Is.Not.Null);
+            Assert.That(typeof(TestDataRecordStructMixed).GetProperties(), Has.Length.EqualTo(5));
+
+            var numberColumns = testData.GetCSVColumnCount();
+            Assert.That(numberColumns, Is.EqualTo(5));
+            
+            var header = testData.GetCSVHeaders();
+            Assert.That(header, Is.EquivalentTo(new[] { "Area", "Step", "Value", "Z", "State" }));
+            
+            var dataLine = testData.ConvertToCSVDataLine();
+            Assert.That(dataLine, Is.EquivalentTo(new[] { "Area1", "1", "1.1", "7", "False" }));
+        });
+    }
+    
+    [Test]
+    public void TestLongText()
+    {
+        var text = """
+                   This is a long text that should be split into multiple lines
+                   and should be able to be used as a multiline string
+                   ...
+                   and on and on...
+                   """;
+        var testData = new TestDataRecordStructMixed(text, 500_000, 0.00057f, -6_087);
+        Assert.Multiple(() =>
+        {
+            var dataLine = testData.ConvertToCSVDataLine();
+            Assert.That(dataLine, Is.EquivalentTo(new[] { text, "500000", "0.00057", "-6087", "False" }));
+        });
+    }
+
+    [Test]
+    public void TestOneLineStructure()
+    {
+        var testData = new TestDataOneLine("Bob", 120);
+        Assert.Multiple(() =>
+        {
+            var numberColumns = testData.GetCSVColumnCount();
+            Assert.That(numberColumns, Is.EqualTo(2));
+            
+            var header = testData.GetCSVHeaders();
+            Assert.That(header, Is.EquivalentTo(new[] { "Name", "Age" }));
+            
+            var dataLine = testData.ConvertToCSVDataLine();
+            Assert.That(dataLine, Is.EquivalentTo(new[] { "Bob", "120" }));
+        });
+    }
+    
+    [Test]
+    public void TestRegularStruct()
+    {
+        var testData = new TestDataRegularStruct
+        {
+            City = "New York",
+            Age = 35,
+            Size = 1.85,
+        };
+        
+        Assert.Multiple(() =>
+        {
+            var numberColumns = testData.GetCSVColumnCount();
+            Assert.That(numberColumns, Is.EqualTo(3));
+            
+            var header = testData.GetCSVHeaders();
+            Assert.That(header, Is.EquivalentTo(new[] { "City", "Age", "Size" }));
+            
+            var dataLine = testData.ConvertToCSVDataLine();
+            Assert.That(dataLine, Is.EquivalentTo(new[] { "New York", "35", "1.85" }));
+        });
+    }
+}

Tests/Tests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>CS8600;CS8602;CS8603</WarningsAsErrors>
+
+        <IsPackable>false</IsPackable>
+        <IsTestProject>true</IsTestProject>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="coverlet.collector" Version="6.0.0"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0"/>
+        <PackageReference Include="NUnit" Version="3.14.0"/>
+        <PackageReference Include="NUnit.Analyzers" Version="3.9.0"/>
+        <PackageReference Include="NUnit3TestAdapter" Version="4.5.0"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Using Include="NUnit.Framework"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\CSV Metrics Logger Generator\CSV Metrics Logger Generator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
+        <ProjectReference Include="..\CSV Metrics Logger\CSV Metrics Logger.csproj" />
+    </ItemGroup>
+
+</Project>