content/browser/renderer_host/render_process_host_browsertest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/renderer_host/render_process_host_impl.h"
   6 #include "content/common/child_process_messages.h"
   7 #include "content/public/browser/render_process_host.h"
   8 #include "content/public/browser/render_process_host_observer.h"
   9 #include "content/public/browser/render_view_host.h"
  10 #include "content/public/browser/web_contents.h"
  11 #include "content/shell/browser/shell.h"
  12 #include "content/test/content_browser_test.h"
  13 #include "content/test/content_browser_test_utils.h"
  14 #include "net/test/embedded_test_server/embedded_test_server.h"
  15
  16 namespace content {
  17 namespace {
  18
  19 int RenderProcessHostCount() {
  20   content::RenderProcessHost::iterator hosts =
  21       content::RenderProcessHost::AllHostsIterator();
  22   int count = 0;
  23   while (!hosts.IsAtEnd()) {
  24     if (hosts.GetCurrentValue()->HasConnection())
  25       count++;
  26     hosts.Advance();
  27   }
  28   return count;
  29 }
  30
  31 class RenderProcessHostTest : public ContentBrowserTest,
  32                               public RenderProcessHostObserver {
  33  public:
  34   RenderProcessHostTest() : process_exits_(0), host_destructions_(0) {}
  35
  36  protected:
  37   // RenderProcessHostObserver:
  38   virtual void RenderProcessExited(RenderProcessHost* host,
  39                                    base::ProcessHandle handle,
  40                                    base::TerminationStatus status,
  41                                    int exit_code) OVERRIDE {
  42     ++process_exits_;
  43   }
  44   virtual void RenderProcessHostDestroyed(RenderProcessHost* host) OVERRIDE {
  45     ++host_destructions_;
  46   }
  47
  48   int process_exits_;
  49   int host_destructions_;
  50 };
  51
  52 // Sometimes the renderer process's ShutdownRequest (corresponding to the
  53 // ViewMsg_WasSwappedOut from a previous navigation) doesn't arrive until after
  54 // the browser process decides to re-use the renderer for a new purpose.  This
  55 // test makes sure the browser doesn't let the renderer die in that case.  See
  56 // http://crbug.com/87176.
  57 IN_PROC_BROWSER_TEST_F(RenderProcessHostTest,
  58                        ShutdownRequestFromActiveTabIgnored) {
  59   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
  60
  61   GURL test_url = embedded_test_server()->GetURL("/simple_page.html");
  62   NavigateToURL(shell(), test_url);
  63   RenderProcessHost* rph =
  64       shell()->web_contents()->GetRenderViewHost()->GetProcess();
  65
  66   host_destructions_ = 0;
  67   process_exits_ = 0;
  68   rph->AddObserver(this);
  69   ChildProcessHostMsg_ShutdownRequest msg;
  70   rph->OnMessageReceived(msg);
  71
  72   // If the RPH sends a mistaken ChildProcessMsg_Shutdown, the renderer process
  73   // will take some time to die. Wait for a second tab to load in order to give
  74   // that time to happen.
  75   NavigateToURL(CreateBrowser(), test_url);
  76
  77   EXPECT_EQ(0, process_exits_);
  78   if (!host_destructions_)
  79     rph->RemoveObserver(this);
  80 }
  81
  82 IN_PROC_BROWSER_TEST_F(RenderProcessHostTest,
  83                        GuestsAreNotSuitableHosts) {
  84   // Set max renderers to 1 to force running out of processes.
  85   content::RenderProcessHost::SetMaxRendererProcessCount(1);
  86
  87   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
  88
  89   GURL test_url = embedded_test_server()->GetURL("/simple_page.html");
  90   NavigateToURL(shell(), test_url);
  91   RenderProcessHost* rph =
  92       shell()->web_contents()->GetRenderViewHost()->GetProcess();
  93   // Make it believe it's a guest.
  94   reinterpret_cast<RenderProcessHostImpl*>(rph)->SetIsGuestForTesting(true);
  95   EXPECT_EQ(1, RenderProcessHostCount());
  96
  97   // Navigate to a different page.
  98   GURL::Replacements replace_host;
  99   std::string host_str("localhost");  // Must stay in scope with replace_host.
 100   replace_host.SetHostStr(host_str);
 101   GURL another_url = embedded_test_server()->GetURL("/simple_page.html");
 102   another_url = another_url.ReplaceComponents(replace_host);
 103   NavigateToURL(CreateBrowser(), another_url);
 104
 105   // Expect that we got another process (the guest renderer was not reused).
 106   EXPECT_EQ(2, RenderProcessHostCount());
 107 }
 108
 109 }  // namespace
 110 }  // namespace content