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 "content/public/common/content_constants.h"
   8 #include "content/public/test/mock_render_process_host.h"
   9 #include "content/test/test_render_view_host.h"
  10
  11 namespace content {
  12
  13 class RenderProcessHostUnitTest : public RenderViewHostTestHarness {};
  14
  15 // Tests that guest RenderProcessHosts are not considered suitable hosts when
  16 // searching for RenderProcessHost.
  17 TEST_F(RenderProcessHostUnitTest, GuestsAreNotSuitableHosts) {
  18   GURL test_url("http://foo.com");
  19
  20   MockRenderProcessHost guest_host(browser_context());
  21   guest_host.set_is_isolated_guest(true);
  22
  23   EXPECT_FALSE(RenderProcessHostImpl::IsSuitableHost(
  24       &guest_host, browser_context(), test_url));
  25   EXPECT_TRUE(RenderProcessHostImpl::IsSuitableHost(
  26       process(), browser_context(), test_url));
  27   EXPECT_EQ(
  28       process(),
  29       RenderProcessHost::GetExistingProcessHost(browser_context(), test_url));
  30 }
  31
  32 #if !defined(OS_ANDROID)
  33 TEST_F(RenderProcessHostUnitTest, RendererProcessLimit) {
  34   // Disable any overrides.
  35   RenderProcessHostImpl::SetMaxRendererProcessCount(0);
  36
  37   // Verify that the limit is between 1 and kMaxRendererProcessCount.
  38   EXPECT_GT(RenderProcessHostImpl::GetMaxRendererProcessCount(), 0u);
  39   EXPECT_LE(RenderProcessHostImpl::GetMaxRendererProcessCount(),
  40       kMaxRendererProcessCount);
  41
  42   // Add dummy process hosts to saturate the limit.
  43   ASSERT_NE(0u, kMaxRendererProcessCount);
  44   ScopedVector<MockRenderProcessHost> hosts;
  45   for (size_t i = 0; i < kMaxRendererProcessCount; ++i) {
  46     hosts.push_back(new MockRenderProcessHost(browser_context()));
  47   }
  48
  49   // Verify that the renderer sharing will happen.
  50   GURL test_url("http://foo.com");
  51   EXPECT_TRUE(RenderProcessHostImpl::ShouldTryToUseExistingProcessHost(
  52         browser_context(), test_url));
  53 }
  54 #endif
  55
  56 #if defined(OS_ANDROID)
  57 TEST_F(RenderProcessHostUnitTest, NoRendererProcessLimitOnAndroid) {
  58   // Disable any overrides.
  59   RenderProcessHostImpl::SetMaxRendererProcessCount(0);
  60
  61   // Verify that by default the limit on Android returns max size_t.
  62   EXPECT_EQ(std::numeric_limits<size_t>::max(),
  63       RenderProcessHostImpl::GetMaxRendererProcessCount());
  64
  65   // Add a few dummy process hosts.
  66   ASSERT_NE(0u, kMaxRendererProcessCount);
  67   ScopedVector<MockRenderProcessHost> hosts;
  68   for (size_t i = 0; i < kMaxRendererProcessCount; ++i) {
  69     hosts.push_back(new MockRenderProcessHost(browser_context()));
  70   }
  71
  72   // Verify that the renderer sharing still won't happen.
  73   GURL test_url("http://foo.com");
  74   EXPECT_FALSE(RenderProcessHostImpl::ShouldTryToUseExistingProcessHost(
  75         browser_context(), test_url));
  76 }
  77 #endif
  78
  79 }  // namespace content