Upstream most of ios/web/net

ios/web/ui_web_view_util_unittest.mm

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/web/ui_web_view_util.h"
+
+#import "ios/web/public/test/test_web_client.h"
+#include "testing/gtest_mac.h"
+#include "testing/platform_test.h"
+
+namespace {
+
+// Returns user agent string registered for UIWebView.
+NSString* GetUserAgent() {
+  return [[NSUserDefaults standardUserDefaults] stringForKey:@"UserAgent"];
+}
+
+class UIWebViewUtilTest : public PlatformTest {
+ protected:
+  void SetUp() override {
+    PlatformTest::SetUp();
+    test_web_client_.SetUserAgent("DesktopUA", true);
+    test_web_client_.SetUserAgent("RegularUA", false);
+    web::SetWebClient(&test_web_client_);
+  }
+  void TearDown() override {
+    web::SetWebClient(nullptr);
+    PlatformTest::TearDown();
+  }
+ private:
+  // WebClient that returns test user agent.
+  web::TestWebClient test_web_client_;
+};
+
+// Tests registration of a non-desktop user agent.
+TEST_F(UIWebViewUtilTest, BuildAndRegisterNonDesktopUserAgentForUIWebView) {
+  web::BuildAndRegisterUserAgentForUIWebView(@"1231546541321", NO);
+  EXPECT_NSEQ(@"RegularUA (1231546541321)", GetUserAgent());
+}
+
+// Tests registration of a desktop user agent.
+TEST_F(UIWebViewUtilTest, BuildAndRegisterDesktopUserAgentForUIWebView) {
+  web::BuildAndRegisterUserAgentForUIWebView(@"1231546541321", YES);
+  EXPECT_NSEQ(@"DesktopUA (1231546541321)", GetUserAgent());
+}
+
+// Tests web::RegisterUserAgentForUIWebView function that it correctly registers
+// arbitrary user agent.
+TEST_F(UIWebViewUtilTest, RegisterUserAgentForUIWebView) {
+  web::RegisterUserAgentForUIWebView(@"UA");
+  EXPECT_NSEQ(@"UA", GetUserAgent());
+}
+
+}  // namespace