Fix NUnit tests by migrating to use Unity Test Frameworks. (#646)

- Change NUnit tests to utilize Unity Test Frameworks
- Add new script to enable dlls through Version Handler. This script should be removed before tests, or it will exit the Unity once Version Handler update is done.
- Add required UPM packages for Unity Test Frameworks
- Move all NUnit test code to the proper folders and add proper .asmdef, instead of using .csproj

Author: chkuang-g

.github/workflows/test.yaml

@@ -132,11 +132,10 @@ jobs:
         shell: bash
         timeout-minutes: 60
         run: |
-          # DISABLE: NUnit test is currently broken from Unity 2019
           ./gradlew test -q \
                     -PINTERACTIVE_MODE_TESTS_ENABLED=0 \
                     -PINCLUDE_TEST_TYPES="${{ needs.check_and_prepare.outputs.include_test_types }}" \
-                    -PEXCLUDE_TEST_TYPES="NUnit,${{ needs.check_and_prepare.outputs.exclude_test_types }}" \
+                    -PEXCLUDE_TEST_TYPES="${{ needs.check_and_prepare.outputs.exclude_test_types }}" \
                     -PINCLUDE_TEST_MODULES="${{ needs.check_and_prepare.outputs.include_test_modules }}" \
                     -PEXCLUDE_TEST_MODULES="${{ needs.check_and_prepare.outputs.exclude_test_modules }}" \
                     -PEXCLUDE_TESTS="${{ needs.check_and_prepare.outputs.exclude_tests }}"

build.gradle

@@ -57,3 +57,4 @@
 [assembly: InternalsVisibleTo("Google.IOSResolver")]
 // Uses all classes for testing.
 [assembly: InternalsVisibleTo("Google.AndroidResolverIntegrationTests")]
+[assembly: InternalsVisibleTo("Google.AndroidResolverTests")]

source/AndroidResolver/Properties/AssemblyInfo.cs

@@ -0,0 +1,25 @@
+{
+    "name": "Google.AndroidResolverTests",
+    "references": [
+        "UnityEngine.TestRunner",
+        "UnityEditor.TestRunner"
+    ],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": true,
+    "precompiledReferences": [
+        "nunit.framework.dll",
+        "Google.VersionHandler.dll",
+        "Google.VersionHandlerImpl.dll",
+        "Google.JarResolver.dll"
+    ],
+    "autoReferenced": false,
+    "defineConstraints": [
+        "UNITY_INCLUDE_TESTS"
+    ],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

source/AndroidResolver/unit_tests/Assets/AndroidResolverTests/AndroidResolverTests.asmdef

@@ -0,0 +1,25 @@
+{
+    "name": "Google.PackageManagerResolverTests",
+    "references": [
+        "UnityEngine.TestRunner",
+        "UnityEditor.TestRunner"
+    ],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": true,
+    "precompiledReferences": [
+        "nunit.framework.dll",
+        "Google.VersionHandler.dll",
+        "Google.VersionHandlerImpl.dll",
+        "Google.PackageManagerResolver.dll"
+    ],
+    "autoReferenced": false,
+    "defineConstraints": [
+        "UNITY_INCLUDE_TESTS"
+    ],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

source/JarResolverTests/src/Google.JarResolver.Tests/DependencyTests.cs renamed to source/AndroidResolver/unit_tests/Assets/AndroidResolverTests/src/Google.JarResolver.Tests/DependencyTests.cs

@@ -0,0 +1,24 @@
+{
+    "name": "Google.VersionHandlerImplTests",
+    "references": [
+        "UnityEngine.TestRunner",
+        "UnityEditor.TestRunner"
+    ],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": true,
+    "precompiledReferences": [
+        "nunit.framework.dll",
+        "Google.VersionHandler.dll",
+        "Google.VersionHandlerImpl.dll"
+    ],
+    "autoReferenced": false,
+    "defineConstraints": [
+        "UNITY_INCLUDE_TESTS"
+    ],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

source/JarResolverTests/src/Google.JarResolver.Tests/PlayServicesSupportTests.cs renamed to source/AndroidResolver/unit_tests/Assets/AndroidResolverTests/src/Google.JarResolver.Tests/PlayServicesSupportTests.cs

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "com.unity.test-framework": "1.1.33"
+  }
+}

source/JarResolverTests/testData/extras/google/m2repository/test/artifact/7.0.0/artifact-7.0.0.aar renamed to source/AndroidResolver/unit_tests/Assets/AndroidResolverTests/testData/extras/google/m2repository/test/artifact/7.0.0/artifact-7.0.0.aar

@@ -0,0 +1,48 @@
+// <copyright file="TestResolverBootstrapped.cs" company="Google Inc.">
+// Copyright (C) 2023 Google Inc. All Rights Reserved.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//    limitations under the License.
+// </copyright>
+
+using System;
+using System.Collections.Generic;
+using System.Collections;
+using System.IO;
+
+/// <summary>
+/// Run Version Handler to ensure all the libraries are properly enabled.
+/// </summary>
+[UnityEditor.InitializeOnLoad]
+public class VersionHandlerUpdater {
+    /// <summary>
+    /// Register a method to call when the Version Handler has enabled all plugins in the project.
+    /// </summary>
+    static VersionHandlerUpdater() {
+        // Disable stack traces for more condensed logs.
+        UnityEngine.Application.stackTraceLogType = UnityEngine.StackTraceLogType.None;
+        UnityEngine.Debug.Log("Set up callback on Version Handler completion.");
+        Google.VersionHandler.UpdateCompleteMethods = new [] {
+            ":VersionHandlerUpdater:VersionHandlerReady"
+        };
+        UnityEngine.Debug.Log("Enable plugin using the Version Handler.");
+        Google.VersionHandler.UpdateNow();
+    }
+
+    /// <summary>
+    /// Called when the Version Handler has enabled all managed plugins in a project.
+    /// </summary>
+    public static void VersionHandlerReady() {
+        UnityEngine.Debug.Log("The plugin should now be enabled by the Version Handler.");
+        UnityEditor.EditorApplication.Exit(0);
+    }
+}