content/browser/renderer_host/render_process_host_unittest.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 <limits>
   6
   7 #include "base/command_line.h"
   8 #include "content/public/common/content_constants.h"
   9 #include "content/public/common/content_switches.h"
  10 #include "content/public/test/mock_render_process_host.h"
  11 #include "content/test/test_render_view_host.h"
  12
  13 namespace content {
  14
  15 class RenderProcessHostUnitTest : public RenderViewHostTestHarness {};
  16
  17 // Tests that guest RenderProcessHosts are not considered suitable hosts when
  18 // searching for RenderProcessHost.
  19 TEST_F(RenderProcessHostUnitTest, GuestsAreNotSuitableHosts) {
  20   GURL test_url("http://foo.com");
  21
  22   MockRenderProcessHost guest_host(browser_context());
  23   guest_host.set_is_isolated_guest(true);
  24
  25   EXPECT_FALSE(RenderProcessHostImpl::IsSuitableHost(
  26       &guest_host, browser_context(), test_url));
  27   EXPECT_TRUE(RenderProcessHostImpl::IsSuitableHost(
  28       process(), browser_context(), test_url));
  29   EXPECT_EQ(
  30       process(),
  31       RenderProcessHost::GetExistingProcessHost(browser_context(), test_url));
  32 }
  33
  34 #if !defined(OS_ANDROID)
  35 TEST_F(RenderProcessHostUnitTest, RendererProcessLimit) {
  36   // This test shouldn't run with --site-per-process or
  37   // --enable-strict-site-isolation modes, since they don't allow renderer
  38   // process reuse, which this test explicitly exercises.
  39   const base::CommandLine& command_line =
  40       *base::CommandLine::ForCurrentProcess();
  41   if (command_line.HasSwitch(switches::kSitePerProcess) ||
  42       command_line.HasSwitch(switches::kEnableStrictSiteIsolation))
  43     return;
  44
  45   // Disable any overrides.
  46   RenderProcessHostImpl::SetMaxRendererProcessCount(0);
  47
  48   // Verify that the limit is between 1 and kMaxRendererProcessCount.
  49   EXPECT_GT(RenderProcessHostImpl::GetMaxRendererProcessCount(), 0u);
  50   EXPECT_LE(RenderProcessHostImpl::GetMaxRendererProcessCount(),
  51       kMaxRendererProcessCount);
  52
  53   // Add dummy process hosts to saturate the limit.
  54   ASSERT_NE(0u, kMaxRendererProcessCount);
  55   ScopedVector<MockRenderProcessHost> hosts;
  56   for (size_t i = 0; i < kMaxRendererProcessCount; ++i) {
  57     hosts.push_back(new MockRenderProcessHost(browser_context()));
  58   }
  59
  60   // Verify that the renderer sharing will happen.
  61   GURL test_url("http://foo.com");
  62   EXPECT_TRUE(RenderProcessHostImpl::ShouldTryToUseExistingProcessHost(
  63         browser_context(), test_url));
  64 }
  65 #endif
  66
  67 #if defined(OS_ANDROID)
  68 TEST_F(RenderProcessHostUnitTest, NoRendererProcessLimitOnAndroid) {
  69   // Disable any overrides.
  70   RenderProcessHostImpl::SetMaxRendererProcessCount(0);
  71
  72   // Verify that by default the limit on Android returns max size_t.
  73   EXPECT_EQ(std::numeric_limits<size_t>::max(),
  74       RenderProcessHostImpl::GetMaxRendererProcessCount());
  75
  76   // Add a few dummy process hosts.
  77   ASSERT_NE(0u, kMaxRendererProcessCount);
  78   ScopedVector<MockRenderProcessHost> hosts;
  79   for (size_t i = 0; i < kMaxRendererProcessCount; ++i) {
  80     hosts.push_back(new MockRenderProcessHost(browser_context()));
  81   }
  82
  83   // Verify that the renderer sharing still won't happen.
  84   GURL test_url("http://foo.com");
  85   EXPECT_FALSE(RenderProcessHostImpl::ShouldTryToUseExistingProcessHost(
  86         browser_context(), test_url));
  87 }
  88 #endif
  89
  90 }  // namespace content