Fork test/ios/google_test_runner.mm from Chromium's //base

WebRTC should not depend on Chromium's //base.

Bug: webrtc:13662
Change-Id: I7ce7036c96b26a79de46a519ed24dd660a298433
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/260925
Commit-Queue: Björn Terelius <terelius@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Andrey Logvin <landrey@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36754}

test/BUILD.gn

@@ -298,7 +298,10 @@ rtc_library("perf_test") {
 if (is_ios) {
   rtc_library("test_support_objc") {
     testonly = true
-    visibility = [ ":test_support" ]
+    visibility = [
+      ":google_test_runner_objc",
+      ":test_support",
+    ]
     sources = [
       "ios/coverage_util_ios.h",
       "ios/coverage_util_ios.mm",
@@ -314,6 +317,15 @@ if (is_ios) {
     configs += [ ":test_support_objc_config" ]
   }
 
+  rtc_library("google_test_runner_objc") {
+    testonly = true
+    visibility = [ "*" ]
+    sources = [ "ios/google_test_runner.mm" ]
+    deps = [ ":test_support_objc" ]
+    configs += [ "//build/config/ios:xctest_config" ]
+    frameworks = [ "UIKit.framework" ]
+  }
+
   config("test_support_objc_config") {
     defines = []
 
@@ -976,9 +988,7 @@ if (is_mac) {
       "mac/video_renderer_mac.h",
       "mac/video_renderer_mac.mm",
     ]
-    deps = [
-      ":test_renderer_generic",
-    ]
+    deps = [ ":test_renderer_generic" ]
     frameworks = [
       "Cocoa.framework",
       "OpenGL.framework",

test/ios/google_test_runner.mm

@@ -0,0 +1,40 @@
+/*
+ *  Copyright (c) 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+// Copied from Chromium base/test/ios/google_test_runner.mm to avoid
+// the //base dependency. The protocol is required to run iOS Unittest.
+
+#import <UIKit/UIKit.h>
+#import <XCTest/XCTest.h>
+
+#import "test/ios/google_test_runner_delegate.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@interface GoogleTestRunner : XCTestCase
+@end
+
+@implementation GoogleTestRunner
+
+- (void)testRunGoogleTests {
+  self.continueAfterFailure = false;
+
+  id appDelegate = UIApplication.sharedApplication.delegate;
+  XCTAssertTrue([appDelegate conformsToProtocol:@protocol(GoogleTestRunnerDelegate)]);
+
+  id<GoogleTestRunnerDelegate> runnerDelegate =
+      static_cast<id<GoogleTestRunnerDelegate>>(appDelegate);
+  XCTAssertTrue(runnerDelegate.supportsRunningGoogleTests);
+  XCTAssertTrue([runnerDelegate runGoogleTests] == 0);
+}
+
+@end

test/ios/google_test_runner_delegate.h

@@ -12,8 +12,8 @@
 #define TEST_IOS_GOOGLE_TEST_RUNNER_DELEGATE_H_
 
 // Copied from Chromium base/test/ios/google_test_runner_delegate.h
-// The WebRTC test cannot depend on //base, but this protocol is required
-// to run iOS Unittest, so it is a workaround for the dependency.
+// to avoid the //base dependency. This protocol is required
+// to run iOS Unittest.
 @protocol GoogleTestRunnerDelegate
 
 // Returns YES if this delegate supports running GoogleTests via a call to

webrtc.gni

@@ -498,10 +498,10 @@ template("rtc_test") {
       ]
     }
 
-    # Build //base/test:google_test_runner when the test is not a real XCTest.
+    # Build //test:google_test_runner_objc when the test is not a real XCTest.
     if (is_ios && rtc_include_tests) {
       if (!defined(invoker.is_xctest) || !invoker.is_xctest) {
-        xctest_module_target = "//base/test:google_test_runner"
+        xctest_module_target = "//test:google_test_runner_objc"
       }
     }