Add helper function to test that a given URL is a valid Gaia sign in URL.

google_apis/gaia/gaia_auth_util_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "google_apis/gaia/gaia_auth_util.h"
 
+#include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gaia {
 
 TEST(GaiaAuthUtilTest, EmailAddressNoOp) {
   const char lower_case[] = "user@what.com";
   EXPECT_EQ(lower_case, CanonicalizeEmail(lower_case));
 }
 
 TEST(GaiaAuthUtilTest, EmailAddressIgnoreCaps) {
@@ skipping 60 matching lines @@
 
 TEST(GaiaAuthUtilTest, SanitizeMissingDomain) {
   EXPECT_EQ("nodomain@gmail.com", SanitizeEmail("nodomain"));
 }
 
 TEST(GaiaAuthUtilTest, SanitizeExistingDomain) {
   const char existing[] = "test@example.com";
   EXPECT_EQ(existing, SanitizeEmail(existing));
 }
 
+TEST(GaiaAuthUtilTest, IsGaiaSignonRealm) {
+  // Only https versions of Gaia URLs should be considered valid.
+  EXPECT_TRUE(IsGaiaSignonRealm(GURL("https://accounts.google.com/")));
+  EXPECT_TRUE(IsGaiaSignonRealm(GURL("https://www.google.com/")));
+  EXPECT_FALSE(IsGaiaSignonRealm(GURL("http://accounts.google.com/")));
+  EXPECT_FALSE(IsGaiaSignonRealm(GURL("http://www.google.com/")));
+
+  // Other Google URLs are not valid.
+  EXPECT_FALSE(IsGaiaSignonRealm(GURL("https://google.com/")));
+  EXPECT_FALSE(IsGaiaSignonRealm(GURL("https://mail.google.com/")));
+
+  // Other https URLs are not valid.
+  EXPECT_FALSE(IsGaiaSignonRealm(GURL("https://www.example.com/")));
+}
+
 }  // namespace gaia