Add justfile and essential recipes. Add unit tests. Add linter and fix linter errors.

api/Api.slnx

@@ -1,2 +1,4 @@
 <Solution>
+  <Project Path="App.Tests/App.Tests.csproj" />
+  <Project Path="App/App.csproj" />
 </Solution>

api/App.Tests/ApiEndpointsTests.cs

@@ -0,0 +1,131 @@
+using System.Net;
+using System.Net.Http.Json;
+using System.Text.Json;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.Extensions.Configuration;
+
+namespace App.Tests;
+
+public class ApiEndpointsTests(ApiTestFactory factory) : IClassFixture<ApiTestFactory>
+{
+  private readonly HttpClient _client = factory.CreateClient();
+
+  [Fact]
+  public async Task GetVersion_ReturnsVersion()
+  {
+    var response = await _client.GetAsync("/");
+
+    Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+
+    using var body = await JsonDocument.ParseAsync(await response.Content.ReadAsStreamAsync());
+    Assert.Equal("1.0.0", body.RootElement.GetProperty("version").GetString());
+  }
+
+  [Fact]
+  public async Task HealthDb_ReturnsOk()
+  {
+    var response = await _client.GetAsync("/health/db");
+
+    Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+
+    using var body = await JsonDocument.ParseAsync(await response.Content.ReadAsStreamAsync());
+    Assert.Equal("ok", body.RootElement.GetProperty("database").GetString());
+    Assert.Equal(1, body.RootElement.GetProperty("result").GetInt32());
+  }
+
+  [Fact]
+  public async Task OpenHours_Crud_Works()
+  {
+    var createPayload = new
+    {
+      id = 0,
+      name = "test-version",
+      version = DateTime.UtcNow.ToString("O"),
+      paragraph1 = "p1",
+      paragraph2 = "p2",
+      paragraph3 = "p3",
+      paragraph4 = "p4",
+      kitchenNotice = "k1"
+    };
+
+    var createResponse = await _client.PostAsJsonAsync("/lok/open-hours", createPayload);
+
+    Assert.Equal(HttpStatusCode.Created, createResponse.StatusCode);
+    Assert.Equal("/lok/open-hours", createResponse.Headers.Location?.ToString());
+
+    var created = await createResponse.Content.ReadFromJsonAsync<LokOpenHoursDto>();
+    Assert.NotNull(created);
+    Assert.True(created.Id > 0);
+    Assert.Equal(createPayload.name, created.Name);
+
+    var getResponse = await _client.GetAsync("/lok/open-hours");
+    Assert.Equal(HttpStatusCode.OK, getResponse.StatusCode);
+
+    var openHours = await getResponse.Content.ReadFromJsonAsync<List<LokOpenHoursDto>>();
+    Assert.NotNull(openHours);
+    Assert.Contains(openHours, item => item.Id == created.Id);
+
+    var deleteResponse = await _client.DeleteAsync($"/lok/open-hours/{created.Id}");
+    Assert.Equal(HttpStatusCode.NoContent, deleteResponse.StatusCode);
+
+    var deleteAgainResponse = await _client.DeleteAsync($"/lok/open-hours/{created.Id}");
+    Assert.Equal(HttpStatusCode.NotFound, deleteAgainResponse.StatusCode);
+  }
+}
+
+public class ApiTestFactory : WebApplicationFactory<Program>
+{
+  private readonly string _dbPath = Path.Combine(Path.GetTempPath(), $"klapi-tests-{Guid.NewGuid():N}.db");
+
+  protected override void ConfigureWebHost(IWebHostBuilder builder)
+  {
+    builder.ConfigureAppConfiguration((_, configBuilder) =>
+    {
+      configBuilder.AddInMemoryCollection(new Dictionary<string, string?>
+      {
+        ["ConnectionStrings:DefaultConnection"] = $"Data Source={_dbPath}"
+      });
+    });
+  }
+
+  protected override void Dispose(bool disposing)
+  {
+    base.Dispose(disposing);
+
+    if (!disposing)
+    {
+      return;
+    }
+
+    try
+    {
+      if (File.Exists(_dbPath))
+      {
+        File.Delete(_dbPath);
+      }
+    }
+    catch
+    {
+    }
+  }
+}
+
+public class LokOpenHoursDto
+{
+  public long Id { get; set; }
+
+  public string Name { get; set; } = string.Empty;
+
+  public DateTime Version { get; set; }
+
+  public string Paragraph1 { get; set; } = string.Empty;
+
+  public string Paragraph2 { get; set; } = string.Empty;
+
+  public string Paragraph3 { get; set; } = string.Empty;
+
+  public string Paragraph4 { get; set; } = string.Empty;
+
+  public string KitchenNotice { get; set; } = string.Empty;
+}

api/App.Tests/App.Tests.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\App\App.csproj" />
+  </ItemGroup>
+
+</Project>