test: add unit tests for WebhookEventProcessor

Octokit.Webhooks.sln

@@ -64,6 +64,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AspNetCore", "samples\AspNe
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{174C8B3B-E8D3-4845-AE7C-8C0DEC43354F}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Octokit.Webhooks.TestUtils", "test\Octokit.Webhooks.TestUtils\Octokit.Webhooks.TestUtils.csproj", "{48EB4752-1A23-4DD2-AF86-21ED12475F8B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -86,6 +88,10 @@ Global
 		{2EE1581B-E8B6-409E-8879-6F1EFC8C682B}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2EE1581B-E8B6-409E-8879-6F1EFC8C682B}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2EE1581B-E8B6-409E-8879-6F1EFC8C682B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{48EB4752-1A23-4DD2-AF86-21ED12475F8B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{48EB4752-1A23-4DD2-AF86-21ED12475F8B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{48EB4752-1A23-4DD2-AF86-21ED12475F8B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{48EB4752-1A23-4DD2-AF86-21ED12475F8B}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -98,6 +104,7 @@ Global
 		{E46C1DB5-F21C-46A9-8D17-F08278BC0BF8} = {719809C2-A551-4C4A-9EFD-B10FB5E35BC0}
 		{566DF0E2-1288-4083-9B55-4C8B69BB1432} = {EFE1E5ED-D337-4874-82EC-D9FA0BC7D3AB}
 		{2EE1581B-E8B6-409E-8879-6F1EFC8C682B} = {174C8B3B-E8D3-4845-AE7C-8C0DEC43354F}
+		{48EB4752-1A23-4DD2-AF86-21ED12475F8B} = {E1B24F25-B8A4-46EE-B7EB-7803DCFC543F}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {73F36209-F8D6-4066-8951-D97729F773CF}

test/Directory.Build.props

@@ -7,6 +7,7 @@
     <PackageReference Include="coverlet.collector" PrivateAssets="all" Version="3.1.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <PackageReference Include="FluentAssertions" Version="6.3.0"/>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0"/>
     <PackageReference Include="Moq" Version="4.16.1"/>
     <PackageReference Include="xunit" Version="2.4.1"/>

test/Octokit.Webhooks.Test/Octokit.Webhooks.Test.csproj

@@ -6,10 +6,7 @@
 
   <ItemGroup Label="Project References">
     <ProjectReference Include="..\..\src\Octokit.Webhooks\Octokit.Webhooks.csproj" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <Folder Include="Resources" />
+    <ProjectReference Include="..\Octokit.Webhooks.TestUtils\Octokit.Webhooks.TestUtils.csproj" />
   </ItemGroup>
 
   <ItemGroup>

test/Octokit.Webhooks.Test/TestWebhookEventProcessor.cs

@@ -0,0 +1,6 @@
+namespace Octokit.Webhooks.Test
+{
+    public class TestWebhookEventProcessor : WebhookEventProcessor
+    {
+    }
+}

test/Octokit.Webhooks.Test/WebhookEventProcessorTests.cs

@@ -0,0 +1,22 @@
+namespace Octokit.Webhooks.Test
+{
+    using System;
+    using FluentAssertions;
+    using Xunit;
+
+    public class WebhookEventProcessorTests
+    {
+        private readonly WebhookEventProcessor webhookEventProcessor;
+
+        public WebhookEventProcessorTests() => this.webhookEventProcessor = new TestWebhookEventProcessor();
+
+        [Theory]
+        [ClassData(typeof(WebhookEventProcessorTestsData))]
+        public void CanDeserialize(WebhookHeaders headers, string payload, Type expectedType)
+        {
+            var result = this.webhookEventProcessor.DeserializeWebhookEvent(headers, payload);
+
+            result.Should().BeAssignableTo(expectedType);
+        }
+    }
+}

test/Octokit.Webhooks.Test/WebhookEventProcessorTestsData.cs

@@ -0,0 +1,36 @@
+namespace Octokit.Webhooks.Test
+{
+    using System.Collections;
+    using System.Collections.Generic;
+    using System.IO;
+    using CaseExtensions;
+    using Octokit.Webhooks.TestUtils;
+
+    public class WebhookEventProcessorTestsData : IEnumerable<object[]>
+    {
+        public IEnumerator<object[]> GetEnumerator()
+        {
+            var resourcesDirectory = ResourceUtils.GetResources();
+            var files = Directory.GetFiles(resourcesDirectory, "*.json", SearchOption.AllDirectories);
+            foreach (var file in files)
+            {
+                var relativeResource = file.Replace($"{resourcesDirectory}{Path.DirectorySeparatorChar}", string.Empty);
+                var parts = relativeResource.Split(Path.DirectorySeparatorChar);
+                var headers = new WebhookHeaders
+                {
+                    Event = parts[0],
+                };
+                var expectedType = ClassUtils.GetEventTypeByName(parts[0].ToPascalCase());
+                var content = ResourceUtils.ReadResource(relativeResource);
+                yield return new object[]
+                {
+                    headers,
+                    content,
+                    expectedType,
+                };
+            }
+        }
+
+        IEnumerator IEnumerable.GetEnumerator() => this.GetEnumerator();
+    }
+}

test/Octokit.Webhooks.TestUtils/ClassUtils.cs

@@ -0,0 +1,15 @@
+namespace Octokit.Webhooks.TestUtils
+{
+    using System;
+    using System.Linq;
+    using System.Reflection;
+
+    public static class ClassUtils
+    {
+        public static Type GetEventTypeByName(string name) => Assembly.Load("Octokit.Webhooks")
+            .GetTypes()
+            .Single(t =>
+                t.FullName!.StartsWith("Octokit.Webhooks.Events.", StringComparison.InvariantCulture) &&
+                t.Name == $"{name}Event");
+    }
+}

test/Octokit.Webhooks.TestUtils/Octokit.Webhooks.TestUtils.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup Label="Build">
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

test/Octokit.Webhooks.TestUtils/ResourceUtils.cs

@@ -0,0 +1,21 @@
+namespace Octokit.Webhooks.TestUtils
+{
+    using System;
+    using System.IO;
+    using System.Reflection;
+
+    public static class ResourceUtils
+    {
+        public static string GetResources()
+        {
+            var baseUrl = new Uri(Assembly.GetExecutingAssembly().Location);
+            var basePath = Uri.UnescapeDataString(baseUrl.AbsolutePath);
+            var dirPath = Path.GetDirectoryName(basePath);
+            return Path.Combine(dirPath!, "Resources");
+        }
+
+        public static string ReadResource(string relativePath) => File.ReadAllText(GetResourcePath(relativePath));
+
+        private static string GetResourcePath(string relativePath) => Path.Combine(GetResources(), relativePath);
+    }
+}