Navigation transitions: Place transition page in same process as destination page.

content/browser/site_instance_impl_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 "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/string16.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/browsing_instance.h"
@@ skipping 354 matching lines @@
 
 // Test of distinguishing URLs from different sites.  Most of this logic is
 // tested in RegistryControlledDomainTest.  This test focuses on URLs with
 // different schemes or ports.
 TEST_F(SiteInstanceTest, IsSameWebSite) {
   GURL url_foo = GURL("http://foo/a.html");
   GURL url_foo2 = GURL("http://foo/b.html");
   GURL url_foo_https = GURL("https://foo/a.html");
   GURL url_foo_port = GURL("http://foo:8080/a.html");
   GURL url_javascript = GURL("javascript:alert(1);");
+  GURL url_blank = GURL(url::kAboutBlankURL);
 
   // Same scheme and port -> same site.
   EXPECT_TRUE(SiteInstance::IsSameWebSite(NULL, url_foo, url_foo2));
 
   // Different scheme -> different site.
   EXPECT_FALSE(SiteInstance::IsSameWebSite(NULL, url_foo, url_foo_https));
 
   // Different port -> same site.
   // (Changes to document.domain make renderer ignore the port.)
   EXPECT_TRUE(SiteInstance::IsSameWebSite(NULL, url_foo, url_foo_port));
 
   // JavaScript links should be considered same site for anything.
   EXPECT_TRUE(SiteInstance::IsSameWebSite(NULL, url_javascript, url_foo));
   EXPECT_TRUE(SiteInstance::IsSameWebSite(NULL, url_javascript, url_foo_https));
   EXPECT_TRUE(SiteInstance::IsSameWebSite(NULL, url_javascript, url_foo_port));
 
+  // Navigating to a blank page is considered the same site.
+  EXPECT_TRUE(SiteInstance::IsSameWebSite(NULL, url_foo, url_blank));
+  EXPECT_TRUE(SiteInstance::IsSameWebSite(NULL, url_foo_https, url_blank));
+  EXPECT_TRUE(SiteInstance::IsSameWebSite(NULL, url_foo_port, url_blank));
+
+  // Navigating from a blank site is not considered to be the same site.
+  EXPECT_FALSE(SiteInstance::IsSameWebSite(NULL, url_blank, url_foo));
+  EXPECT_FALSE(SiteInstance::IsSameWebSite(NULL, url_blank, url_foo_https));
+  EXPECT_FALSE(SiteInstance::IsSameWebSite(NULL, url_blank, url_foo_port));
+
   DrainMessageLoops();
 }
 
 // Test to ensure that there is only one SiteInstance per site in a given
 // BrowsingInstance, when process-per-site is not in use.
 TEST_F(SiteInstanceTest, OneSiteInstancePerSite) {
   ASSERT_FALSE(CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kProcessPerSite));
   int delete_counter = 0;
   scoped_ptr<TestBrowserContext> browser_context(new TestBrowserContext());
@@ skipping 364 matching lines @@
   EXPECT_TRUE(instance->GetSiteURL().is_empty());
   host.reset(instance->GetProcess());
 
   EXPECT_FALSE(RenderProcessHostImpl::GetProcessHostForSite(
       browser_context.get(), GURL()));
 
   DrainMessageLoops();
 }
 
 }  // namespace content