added unit test & CI

.github/workflows/dotnet-ci.yml

@@ -0,0 +1,29 @@
+name: .NET CI Pipeline
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '9.0.x'
+
+      - name: Restore dependencies
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --no-restore --configuration Release
+
+      - name: Run tests
+        run: dotnet test --no-build --configuration Release --verbosity normal

FinancialTracker.API.sln

@@ -2,6 +2,8 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FinancialTracker", "FinancialTracker\FinancialTracker.csproj", "{BBECDC23-AC86-4437-8F43-FB9221F4724F}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FinancialTracker.Tests", "FinancialTracker.Tests\FinancialTracker.Tests.csproj", "{129BAEA0-4BA6-468A-B0F1-ED748AE9D316}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -12,5 +14,9 @@ Global
 		{BBECDC23-AC86-4437-8F43-FB9221F4724F}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{BBECDC23-AC86-4437-8F43-FB9221F4724F}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BBECDC23-AC86-4437-8F43-FB9221F4724F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{129BAEA0-4BA6-468A-B0F1-ED748AE9D316}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{129BAEA0-4BA6-468A-B0F1-ED748AE9D316}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{129BAEA0-4BA6-468A-B0F1-ED748AE9D316}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{129BAEA0-4BA6-468A-B0F1-ED748AE9D316}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal

FinancialTracker.API.sln.DotSettings.user

@@ -0,0 +1,4 @@
+<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:String x:Key="/Default/Environment/UnitTesting/UnitTestSessionStore/Sessions/=c3e35030_002D771d_002D4674_002D85e8_002D2b16dd384d0f/@EntryIndexedValue">&lt;SessionState ContinuousTestingMode="0" IsActive="True" Name="All tests from Solution" xmlns="urn:schemas-jetbrains-com:jetbrains-ut-session"&gt;&#xD;
+  &lt;Solution /&gt;&#xD;
+&lt;/SessionState&gt;</s:String></wpf:ResourceDictionary>

FinancialTracker.Tests/Controllers/CategoriesControllerTests.cs

@@ -0,0 +1,55 @@
+using FinancialTracker.Controllers;
+using FinancialTracker.DTOs.CategoryDtos;
+using FinancialTracker.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace FinancialTracker.Tests.Controllers;
+
+public class CategoriesControllerTests
+{
+    private readonly Mock<ICategoryService> _categoryServiceMock;
+    private readonly Mock<ILogger<CategoriesController>> _loggerMock;
+    private readonly CategoriesController _controller;
+
+    public CategoriesControllerTests()
+    {
+        _categoryServiceMock = new Mock<ICategoryService>();
+        _loggerMock = new Mock<ILogger<CategoriesController>>();
+        _controller = new CategoriesController(_categoryServiceMock.Object, _loggerMock.Object);
+    }
+
+    [Fact]
+    public async Task Add_ValidCategory_ReturnsCreatedResult()
+    {
+        var createDto = new CategoryCreateDto { Name = "Продукты" };
+        var expectedCategory = new CategoryResponseDto { Id = 1, Name = "Продукты" };
+
+        _categoryServiceMock
+            .Setup(service => service.AddAsync(createDto))
+            .ReturnsAsync(expectedCategory);
+
+        var result = await _controller.Add(createDto);
+
+        var createdAtResult = Assert.IsType<CreatedAtActionResult>(result.Result);
+        Assert.Equal(201, createdAtResult.StatusCode);
+        Assert.Equal(expectedCategory, createdAtResult.Value);
+    }
+
+    [Fact]
+    public async Task Add_DuplicateCategory_ReturnsConflict()
+    {
+        var createDto = new CategoryCreateDto { Name = "Продукты" };
+        const string errorMessage = "Категория с именем 'Продукты' уже существует";
+
+        _categoryServiceMock
+            .Setup(service => service.AddAsync(createDto))
+            .ThrowsAsync(new InvalidOperationException(errorMessage));
+
+        var result = await _controller.Add(createDto);
+
+        var conflictResult = Assert.IsType<ConflictObjectResult>(result.Result);
+        Assert.Equal(409, conflictResult.StatusCode);
+    }
+}

FinancialTracker.Tests/FinancialTracker.Tests.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net9.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <IsPackable>false</IsPackable>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="coverlet.collector" Version="6.0.2"/>
+        <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.9" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0"/>
+        <PackageReference Include="Moq" Version="4.20.72" />
+        <PackageReference Include="xunit" Version="2.9.2"/>
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Using Include="Xunit"/>
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\FinancialTracker\FinancialTracker.csproj" />
+    </ItemGroup>
+
+</Project>