Skip unit tests when Docker is not running in Linux container mode using DockerIsRunningInLinuxContainerModeFact

test/WireMock.Net.Aspire.Tests/DockerUtils.cs

@@ -8,10 +8,7 @@ namespace WireMock.Net.Aspire.Tests;
 [ExcludeFromCodeCoverage]
 internal static class DockerUtils
 {
-    public static bool IsDockerRunningLinuxContainerMode()
+    public static Lazy<bool> IsDockerRunningLinuxContainerMode => new(() => IsDockerRunning() && IsLinuxContainerMode());
-    {
-        return IsDockerRunning() && IsLinuxContainerMode();
-    }
 
     private static bool IsDockerRunning()
     {

test/WireMock.Net.Aspire.Tests/Facts/DockerIsRunningInLinuxContainerModeFact.cs

@@ -0,0 +1,16 @@
+// Copyright © WireMock.Net
+
+namespace WireMock.Net.Aspire.Tests.Facts;
+
+public sealed class DockerIsRunningInLinuxContainerModeFact : FactAttribute
+{
+    private const string SkipReason = "Docker is not running in Linux container mode. Skipping test.";
+
+    public DockerIsRunningInLinuxContainerModeFact()
+    {
+        if (!DockerUtils.IsDockerRunningLinuxContainerMode.Value)
+        {
+            Skip = SkipReason;
+        }
+    }
+}

test/WireMock.Net.Aspire.Tests/IntegrationTests.cs

@@ -3,6 +3,7 @@
 using System.Net.Http.Json;
 using FluentAssertions;
 using Projects;
+using WireMock.Net.Aspire.Tests.Facts;
 using Xunit.Abstractions;
 
 namespace WireMock.Net.Aspire.Tests;
@@ -11,15 +12,9 @@ public class IntegrationTests(ITestOutputHelper output)
 {
     private record WeatherForecast(DateOnly Date, int TemperatureC, string? Summary);
 
-    [Fact]
+    [DockerIsRunningInLinuxContainerModeFact]
     public async Task StartAppHostWithWireMockAndCreateHttpClientToCallTheMockedWeatherForecastEndpoint()
     {
-        if (!DockerUtils.IsDockerRunningLinuxContainerMode())
-        {
-            output.WriteLine("Docker is not running in Linux container mode. Skipping test.");
-            return;
-        }
-
         // Arrange
         var appHostBuilder = await DistributedApplicationTestingBuilder.CreateAsync<WireMock_Net_Aspire_TestAppHost>();
         await using var app = await appHostBuilder.BuildAsync();
@@ -44,15 +39,9 @@ public class IntegrationTests(ITestOutputHelper output)
         weatherForecasts2.Should().HaveCount(5);
     }
 
-    [Fact]
+    [DockerIsRunningInLinuxContainerModeFact]
     public async Task StartAppHostWithWireMockAndCreateWireMockAdminClientToCallTheAdminEndpoint()
     {
-        if (!DockerUtils.IsDockerRunningLinuxContainerMode())
-        {
-            output.WriteLine("Docker is not running in Linux container mode. Skipping test.");
-            return;
-        }
-
         // Arrange
         var appHostBuilder = await DistributedApplicationTestingBuilder.CreateAsync<WireMock_Net_Aspire_TestAppHost>();
         await using var app = await appHostBuilder.BuildAsync();

test/WireMock.Net.Tests/Facts/IgnoreOnContinuousIntegrationFact.cs

@@ -7,16 +7,16 @@ namespace WireMock.Net.Tests.Facts;
 
 public sealed class IgnoreOnContinuousIntegrationFact : FactAttribute
 {
-    private static readonly string _skipReason = "Ignore when run via CI/CD";
+    private const string SkipReason = "Ignore when run via CI/CD";
-    private static readonly bool _isContinuousIntegrationAzure = bool.TryParse(Environment.GetEnvironmentVariable("TF_BUILD"), out var isTF) && isTF;
+    private static readonly bool IsContinuousIntegrationAzure = bool.TryParse(Environment.GetEnvironmentVariable("TF_BUILD"), out var isTF) && isTF;
-    private static readonly bool _isContinuousIntegrationGithub = bool.TryParse(Environment.GetEnvironmentVariable("GITHUB_ACTIONS"), out var isGH) && isGH;
+    private static readonly bool IsContinuousIntegrationGithub = bool.TryParse(Environment.GetEnvironmentVariable("GITHUB_ACTIONS"), out var isGH) && isGH;
-    private static bool IsContinuousIntegration() => _isContinuousIntegrationAzure || _isContinuousIntegrationGithub;
+    private static readonly bool IsContinuousIntegration = IsContinuousIntegrationAzure || IsContinuousIntegrationGithub;
 
     public IgnoreOnContinuousIntegrationFact()
     {
-        if (IsContinuousIntegration())
+        if (IsContinuousIntegration)
         {
-            Skip = _skipReason;
+            Skip = SkipReason;
         }
     }
 }

test/WireMock.Net.Tests/WireMockServerTests.cs

@@ -210,7 +210,7 @@ public partial class WireMockServerTests
             .ToArray();
     }
     
-    [IgnoreOnContinuousIntegrationFact]
+    [DockerIsRunningInLinuxContainerModeFact]
     public async Task WireMockServer_WithUrl0000_Should_Listen_On_All_IPs_IPv4()
     {
         // Arrange
@@ -236,7 +236,7 @@ public partial class WireMockServerTests
         server.Stop();
     }
 
-    [IgnoreOnContinuousIntegrationFact]
+    [DockerIsRunningInLinuxContainerModeFact]
     public async Task WireMockServer_WithUrl0000_Should_Listen_On_All_IPs_IPv6()
     {
         // Arrange