Added tests for Dockerfile

Author: sblom

test/json-ld.net.tests/DockerTests.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.IO;
+using System.Linq.Expressions;
+using System.Text;
+using Xunit;
+using Xunit.Abstractions;
+using Xunit.Sdk;
+
+namespace JsonLD.Test
+{
+    public class DockerTests
+    {
+        private readonly ITestOutputHelper output;
+        
+        public DockerTests(ITestOutputHelper output)
+        {
+            this.output = output;
+        }
+
+        [SkippableFact]
+        public void DockerBuild()
+        {
+            try
+            {
+                var exit = ExecDocker("build -t json-ld.net .");
+                Assert.Equal(0, exit);
+            }
+            catch (Win32Exception ex) when (ex.Message == "The system cannot find the file specified")
+            {
+                Skip.If(true, "Couldn't find docker in your path.\nThis is only required for building/testing inside a docker container.");
+            }
+        }
+
+        [SkippableFact]
+        public void DockerTest()
+        {
+            try
+            {
+                // --filter option required to avoid going full inception and
+                // testing a container inside a container inside a conta...
+                var exit = ExecDocker($"run --rm json-ld.net dotnet test --filter FullyQualifiedName!~{nameof(DockerTests)}");
+                Assert.Equal(0, exit);
+            }
+            catch (Win32Exception ex) when (ex.Message == "The system cannot find the file specified")
+            {
+                Skip.If(true, "Couldn't find docker in your path.\nThis is only required for building/testing inside a docker container.");
+            }
+        }
+
+        private int ExecDocker(string args)
+        {
+            var workspace = Environment.GetEnvironmentVariable("GITHUB_WORKSPACE");
+            if (string.IsNullOrEmpty(workspace))
+            {
+                // Current directory for test context is usually REPO_HOME/test/json-ld.net.tests/bin/Release/netcoreapp2.1,
+                // and we want just REPO_HOME.
+                workspace = Path.Combine(Directory.GetCurrentDirectory(), "../../../../..");
+            }
+
+            var process = Process.Start(new ProcessStartInfo
+            {
+                UseShellExecute = false,
+                RedirectStandardOutput = true,
+                RedirectStandardError = true,
+                WorkingDirectory = workspace,
+                FileName = "docker",
+                Arguments = args
+            });
+
+            process.WaitForExit();
+
+            output.WriteLine("=======STDOUT=======");
+            output.WriteLine(process.StandardOutput.ReadToEnd());
+            output.WriteLine("\n\n\n\n=======STDERR=======");
+            output.WriteLine(process.StandardError.ReadToEnd());
+
+            return process.ExitCode;
+        }
+    }
+}

test/json-ld.net.tests/json-ld.net.tests.csproj

@@ -7,6 +7,7 @@
     <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
     <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute>
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+    <RootNamespace>JsonLD.Test</RootNamespace>
   </PropertyGroup>
 
   <ItemGroup>
@@ -24,6 +25,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
+    <PackageReference Include="Xunit.SkippableFact" Version="1.4.13" />
     <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />
   </ItemGroup>