test: add test projects and root solution for all modules

src/FlowForge.sln

@@ -0,0 +1,109 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "shared", "shared", "{10000000-0000-0000-0000-000000000001}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.Shared", "shared\FlowForge.Shared\FlowForge.Shared.csproj", "{F3A4B5C6-D7E8-9012-CDEF-123456789013}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "backend", "backend", "{10000000-0000-0000-0000-000000000002}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.Backend.Api", "backend\src\FlowForge.Backend.Api\FlowForge.Backend.Api.csproj", "{A1B2C3D4-E5F6-7890-ABCD-EF1234567890}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.Backend.Application", "backend\src\FlowForge.Backend.Application\FlowForge.Backend.Application.csproj", "{D1E2F3A4-B5C6-7890-ABCD-EF1234567891}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.Backend.Infrastructure", "backend\src\FlowForge.Backend.Infrastructure\FlowForge.Backend.Infrastructure.csproj", "{E2F3A4B5-C6D7-8901-BCDE-F12345678902}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "build-server", "build-server", "{10000000-0000-0000-0000-000000000003}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.BuildServer", "build-server\src\FlowForge.BuildServer\FlowForge.BuildServer.csproj", "{B2C3D4E5-F6A7-8901-BCDE-F12345678901}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "monitor-server", "monitor-server", "{10000000-0000-0000-0000-000000000004}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.MonitorServer", "monitor-server\src\FlowForge.MonitorServer\FlowForge.MonitorServer.csproj", "{C3D4E5F6-A7B8-9012-CDEF-123456789012}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{10000000-0000-0000-0000-000000000005}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.Shared.Tests", "..\test\FlowForge.Shared.Tests\FlowForge.Shared.Tests.csproj", "{20000000-0000-0000-0000-000000000001}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.Backend.Api.Tests", "..\test\FlowForge.Backend.Api.Tests\FlowForge.Backend.Api.Tests.csproj", "{20000000-0000-0000-0000-000000000002}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.Backend.Application.Tests", "..\test\FlowForge.Backend.Application.Tests\FlowForge.Backend.Application.Tests.csproj", "{20000000-0000-0000-0000-000000000003}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.Backend.Infrastructure.Tests", "..\test\FlowForge.Backend.Infrastructure.Tests\FlowForge.Backend.Infrastructure.Tests.csproj", "{20000000-0000-0000-0000-000000000004}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.BuildServer.Tests", "..\test\FlowForge.BuildServer.Tests\FlowForge.BuildServer.Tests.csproj", "{20000000-0000-0000-0000-000000000005}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlowForge.MonitorServer.Tests", "..\test\FlowForge.MonitorServer.Tests\FlowForge.MonitorServer.Tests.csproj", "{20000000-0000-0000-0000-000000000006}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{F3A4B5C6-D7E8-9012-CDEF-123456789013}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F3A4B5C6-D7E8-9012-CDEF-123456789013}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F3A4B5C6-D7E8-9012-CDEF-123456789013}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F3A4B5C6-D7E8-9012-CDEF-123456789013}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A1B2C3D4-E5F6-7890-ABCD-EF1234567890}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A1B2C3D4-E5F6-7890-ABCD-EF1234567890}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A1B2C3D4-E5F6-7890-ABCD-EF1234567890}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A1B2C3D4-E5F6-7890-ABCD-EF1234567890}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D1E2F3A4-B5C6-7890-ABCD-EF1234567891}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D1E2F3A4-B5C6-7890-ABCD-EF1234567891}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D1E2F3A4-B5C6-7890-ABCD-EF1234567891}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D1E2F3A4-B5C6-7890-ABCD-EF1234567891}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E2F3A4B5-C6D7-8901-BCDE-F12345678902}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E2F3A4B5-C6D7-8901-BCDE-F12345678902}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E2F3A4B5-C6D7-8901-BCDE-F12345678902}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E2F3A4B5-C6D7-8901-BCDE-F12345678902}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B2C3D4E5-F6A7-8901-BCDE-F12345678901}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B2C3D4E5-F6A7-8901-BCDE-F12345678901}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B2C3D4E5-F6A7-8901-BCDE-F12345678901}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B2C3D4E5-F6A7-8901-BCDE-F12345678901}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C3D4E5F6-A7B8-9012-CDEF-123456789012}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C3D4E5F6-A7B8-9012-CDEF-123456789012}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C3D4E5F6-A7B8-9012-CDEF-123456789012}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C3D4E5F6-A7B8-9012-CDEF-123456789012}.Release|Any CPU.Build.0 = Release|Any CPU
+		{20000000-0000-0000-0000-000000000001}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000001}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000001}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{20000000-0000-0000-0000-000000000001}.Release|Any CPU.Build.0 = Release|Any CPU
+		{20000000-0000-0000-0000-000000000002}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000002}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000002}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{20000000-0000-0000-0000-000000000002}.Release|Any CPU.Build.0 = Release|Any CPU
+		{20000000-0000-0000-0000-000000000003}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000003}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000003}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{20000000-0000-0000-0000-000000000003}.Release|Any CPU.Build.0 = Release|Any CPU
+		{20000000-0000-0000-0000-000000000004}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000004}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000004}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{20000000-0000-0000-0000-000000000004}.Release|Any CPU.Build.0 = Release|Any CPU
+		{20000000-0000-0000-0000-000000000005}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000005}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000005}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{20000000-0000-0000-0000-000000000005}.Release|Any CPU.Build.0 = Release|Any CPU
+		{20000000-0000-0000-0000-000000000006}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000006}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{20000000-0000-0000-0000-000000000006}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{20000000-0000-0000-0000-000000000006}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{F3A4B5C6-D7E8-9012-CDEF-123456789013} = {10000000-0000-0000-0000-000000000001}
+		{A1B2C3D4-E5F6-7890-ABCD-EF1234567890} = {10000000-0000-0000-0000-000000000002}
+		{D1E2F3A4-B5C6-7890-ABCD-EF1234567891} = {10000000-0000-0000-0000-000000000002}
+		{E2F3A4B5-C6D7-8901-BCDE-F12345678902} = {10000000-0000-0000-0000-000000000002}
+		{B2C3D4E5-F6A7-8901-BCDE-F12345678901} = {10000000-0000-0000-0000-000000000003}
+		{C3D4E5F6-A7B8-9012-CDEF-123456789012} = {10000000-0000-0000-0000-000000000004}
+		{20000000-0000-0000-0000-000000000001} = {10000000-0000-0000-0000-000000000005}
+		{20000000-0000-0000-0000-000000000002} = {10000000-0000-0000-0000-000000000005}
+		{20000000-0000-0000-0000-000000000003} = {10000000-0000-0000-0000-000000000005}
+		{20000000-0000-0000-0000-000000000004} = {10000000-0000-0000-0000-000000000005}
+		{20000000-0000-0000-0000-000000000005} = {10000000-0000-0000-0000-000000000005}
+		{20000000-0000-0000-0000-000000000006} = {10000000-0000-0000-0000-000000000005}
+	EndGlobalSection
+EndGlobal

src/build-server/src/FlowForge.BuildServer/FlowForge.BuildServer.csproj

@@ -6,7 +6,8 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <RootNamespace>FlowForge.BuildServer</RootNamespace>
     <OutputType>Exe</OutputType>
-    <PlatformTarget>x86</PlatformTarget>
+    <!-- TODO: Set PlatformTarget to x86 when COM references (EnvDTE, TCatSysManagerLib) are added -->
+    <!-- <PlatformTarget>x86</PlatformTarget> -->
   </PropertyGroup>
 
   <ItemGroup>

test/FlowForge.Backend.Api.Tests/FlowForge.Backend.Api.Tests.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.*" />
+    <PackageReference Include="xunit" Version="2.*" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.*">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="NSubstitute" Version="5.*" />
+    <PackageReference Include="FluentAssertions" Version="7.*" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\backend\src\FlowForge.Backend.Api\FlowForge.Backend.Api.csproj" />
+  </ItemGroup>
+
+</Project>

test/FlowForge.Backend.Api.Tests/HealthControllerTests.cs

@@ -0,0 +1,22 @@
+// Copyright (c) 2026 Qubernetic (Biró, Csaba Attila)
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+using FluentAssertions;
+using FlowForge.Backend.Api.Controllers;
+using Microsoft.AspNetCore.Mvc;
+using Xunit;
+
+namespace FlowForge.Backend.Api.Tests;
+
+public class HealthControllerTests
+{
+    [Fact]
+    public void Get_ShouldReturnOk()
+    {
+        var controller = new HealthController();
+
+        var result = controller.Get();
+
+        result.Should().BeOfType<OkObjectResult>();
+    }
+}

test/FlowForge.Backend.Application.Tests/FlowDocumentValidatorTests.cs

@@ -0,0 +1,23 @@
+// Copyright (c) 2026 Qubernetic (Biró, Csaba Attila)
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+using FluentAssertions;
+using FlowForge.Backend.Application.Validation;
+using FlowForge.Shared.Models.Flow;
+using Xunit;
+
+namespace FlowForge.Backend.Application.Tests;
+
+public class FlowDocumentValidatorTests
+{
+    [Fact]
+    public void Validate_EmptyDocument_ShouldReturnNoErrors()
+    {
+        var validator = new FlowDocumentValidator();
+        var doc = new FlowDocument();
+
+        var errors = validator.Validate(doc);
+
+        errors.Should().BeEmpty();
+    }
+}

test/FlowForge.Backend.Application.Tests/FlowForge.Backend.Application.Tests.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.*" />
+    <PackageReference Include="xunit" Version="2.*" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.*">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="NSubstitute" Version="5.*" />
+    <PackageReference Include="FluentAssertions" Version="7.*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\backend\src\FlowForge.Backend.Application\FlowForge.Backend.Application.csproj" />
+  </ItemGroup>
+
+</Project>

test/FlowForge.Backend.Infrastructure.Tests/AppDbContextTests.cs

@@ -0,0 +1,25 @@
+// Copyright (c) 2026 Qubernetic (Biró, Csaba Attila)
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+using FluentAssertions;
+using FlowForge.Backend.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Xunit;
+
+namespace FlowForge.Backend.Infrastructure.Tests;
+
+public class AppDbContextTests
+{
+    [Fact]
+    public void AppDbContext_ShouldCreateSuccessfully()
+    {
+        var options = new DbContextOptionsBuilder<AppDbContext>()
+            .UseInMemoryDatabase(databaseName: "TestDb")
+            .Options;
+
+        using var context = new AppDbContext(options);
+
+        context.Should().NotBeNull();
+        context.Projects.Should().NotBeNull();
+    }
+}

test/FlowForge.Backend.Infrastructure.Tests/FlowForge.Backend.Infrastructure.Tests.csproj

@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.*" />
+    <PackageReference Include="xunit" Version="2.*" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.*">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="NSubstitute" Version="5.*" />
+    <PackageReference Include="FluentAssertions" Version="7.*" />
+    <PackageReference Include="Testcontainers.PostgreSql" Version="4.*" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\backend\src\FlowForge.Backend.Infrastructure\FlowForge.Backend.Infrastructure.csproj" />
+  </ItemGroup>
+
+</Project>

test/FlowForge.BuildServer.Tests/BuildPipelineTests.cs

@@ -0,0 +1,50 @@
+// Copyright (c) 2026 Qubernetic (Biró, Csaba Attila)
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+using FluentAssertions;
+using FlowForge.BuildServer.Pipeline;
+using FlowForge.Shared.Models.Build;
+using Microsoft.Extensions.Logging.Abstractions;
+using NSubstitute;
+using NSubstitute.ExceptionExtensions;
+using Xunit;
+
+namespace FlowForge.BuildServer.Tests;
+
+public class BuildPipelineTests
+{
+    [Fact]
+    public async Task ExecuteAsync_WithNoSteps_ShouldReturnTrue()
+    {
+        var pipeline = new BuildPipeline([], NullLogger<BuildPipeline>.Instance);
+        var context = new BuildContext
+        {
+            Job = new BuildJobDto { Id = Guid.NewGuid() }
+        };
+
+        var result = await pipeline.ExecuteAsync(context, CancellationToken.None);
+
+        result.Should().BeTrue();
+        context.Errors.Should().BeEmpty();
+    }
+
+    [Fact]
+    public async Task ExecuteAsync_WithFailingStep_ShouldReturnFalse()
+    {
+        var failingStep = Substitute.For<IBuildStep>();
+        failingStep.Name.Returns("FailStep");
+        failingStep.ExecuteAsync(Arg.Any<BuildContext>(), Arg.Any<CancellationToken>())
+            .ThrowsAsync(new InvalidOperationException("test error"));
+
+        var pipeline = new BuildPipeline([failingStep], NullLogger<BuildPipeline>.Instance);
+        var context = new BuildContext
+        {
+            Job = new BuildJobDto { Id = Guid.NewGuid() }
+        };
+
+        var result = await pipeline.ExecuteAsync(context, CancellationToken.None);
+
+        result.Should().BeFalse();
+        context.Errors.Should().ContainSingle().Which.Should().Contain("test error");
+    }
+}

test/FlowForge.BuildServer.Tests/FlowForge.BuildServer.Tests.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.*" />
+    <PackageReference Include="xunit" Version="2.*" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.*">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="NSubstitute" Version="5.*" />
+    <PackageReference Include="FluentAssertions" Version="7.*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\build-server\src\FlowForge.BuildServer\FlowForge.BuildServer.csproj" />
+  </ItemGroup>
+
+</Project>

test/FlowForge.MonitorServer.Tests/FlowForge.MonitorServer.Tests.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.*" />
+    <PackageReference Include="xunit" Version="2.*" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.*">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="NSubstitute" Version="5.*" />
+    <PackageReference Include="FluentAssertions" Version="7.*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\monitor-server\src\FlowForge.MonitorServer\FlowForge.MonitorServer.csproj" />
+  </ItemGroup>
+
+</Project>