src/ppapi/proxy/ppp_instance_private_proxy_unittest.cc

   1 // Copyright (c) 2012 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 "base/bind.h"
   6 #include "base/message_loop/message_loop.h"
   7 #include "base/test/test_timeouts.h"
   8 #include "base/time/time.h"
   9 #include "ppapi/c/dev/ppb_var_deprecated.h"
  10 #include "ppapi/c/dev/ppp_class_deprecated.h"
  11 #include "ppapi/c/pp_var.h"
  12 #include "ppapi/c/ppb_var.h"
  13 #include "ppapi/c/ppp_instance.h"
  14 #include "ppapi/c/private/ppp_instance_private.h"
  15 #include "ppapi/proxy/host_dispatcher.h"
  16 #include "ppapi/proxy/interface_list.h"
  17 #include "ppapi/proxy/ppapi_proxy_test.h"
  18 #include "ppapi/shared_impl/ppapi_permissions.h"
  19 #include "ppapi/shared_impl/ppb_var_shared.h"
  20 #include "ppapi/shared_impl/var.h"
  21
  22 namespace ppapi {
  23
  24 // A fake version of V8ObjectVar for testing.
  25 class V8ObjectVar : public ppapi::Var {
  26  public:
  27   V8ObjectVar() {}
  28   virtual ~V8ObjectVar() {}
  29
  30   // Var overrides.
  31   virtual V8ObjectVar* AsV8ObjectVar() OVERRIDE { return this; }
  32   virtual PP_VarType GetType() const OVERRIDE { return PP_VARTYPE_OBJECT; }
  33 };
  34
  35 namespace proxy {
  36
  37 namespace {
  38 const PP_Instance kInstance = 0xdeadbeef;
  39
  40 PP_Var GetPPVarNoAddRef(Var* var) {
  41   PP_Var var_to_return = var->GetPPVar();
  42   PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var_to_return);
  43   return var_to_return;
  44 }
  45
  46 PluginDispatcher* plugin_dispatcher = NULL;
  47 // Return the plugin-side proxy for PPB_Var_Deprecated.
  48 const PPB_Var_Deprecated* plugin_var_deprecated_if() {
  49   // The test code must set the plugin dispatcher.
  50   CHECK(plugin_dispatcher);
  51   // Grab the plugin-side proxy for PPB_Var_Deprecated (for CreateObject).
  52   return static_cast<const PPB_Var_Deprecated*>(
  53       plugin_dispatcher->GetBrowserInterface(
  54           PPB_VAR_DEPRECATED_INTERFACE));
  55 }
  56
  57 // Mock PPP_Instance_Private.
  58 PP_Var instance_obj;
  59 PP_Var GetInstanceObject(PP_Instance /*instance*/) {
  60   // The 1 ref we got from CreateObject will be passed to the host. We want to
  61   // have a ref of our own.
  62   printf("GetInstanceObject called\n");
  63   plugin_var_deprecated_if()->AddRef(instance_obj);
  64   return instance_obj;
  65 }
  66
  67 PPP_Instance_Private ppp_instance_private_mock = {
  68   &GetInstanceObject
  69 };
  70
  71 // We need to pass in a |PPP_Class_Deprecated| to
  72 // |PPB_Var_Deprecated->CreateObject| for a mock |Deallocate| method.
  73 void Deallocate(void* object) {
  74 }
  75
  76 const PPP_Class_Deprecated ppp_class_deprecated_mock = {
  77     NULL, // HasProperty
  78     NULL, // HasMethod
  79     NULL, // GetProperty
  80     NULL, // GetAllPropertyNames
  81     NULL, // SetProperty
  82     NULL, // RemoveProperty
  83     NULL, // Call
  84     NULL, // Construct
  85     &Deallocate
  86 };
  87
  88
  89 // We need to mock PPP_Instance, so that we can create and destroy the pretend
  90 // instance that PPP_Instance_Private uses.
  91 PP_Bool DidCreate(PP_Instance /*instance*/, uint32_t /*argc*/,
  92                   const char* /*argn*/[], const char* /*argv*/[]) {
  93   // Create an object var. This should exercise the typical path for creating
  94   // instance objects.
  95   instance_obj =
  96       plugin_var_deprecated_if()->CreateObject(kInstance,
  97                                                &ppp_class_deprecated_mock,
  98                                                NULL);
  99   return PP_TRUE;
 100 }
 101
 102 void DidDestroy(PP_Instance /*instance*/) {
 103   // Decrement the reference count for our instance object. It should be
 104   // deleted.
 105   plugin_var_deprecated_if()->Release(instance_obj);
 106 }
 107
 108 PPP_Instance_1_0 ppp_instance_mock = { &DidCreate, &DidDestroy };
 109
 110 // Mock PPB_Var_Deprecated, so that we can emulate creating an Object Var.
 111 PP_Var CreateObject(PP_Instance /*instance*/,
 112                     const PPP_Class_Deprecated* /*ppp_class*/,
 113                     void* /*ppp_class_data*/) {
 114   V8ObjectVar* obj_var = new V8ObjectVar;
 115   return obj_var->GetPPVar();
 116 }
 117
 118 const PPB_Var_Deprecated ppb_var_deprecated_mock = {
 119   PPB_Var_Shared::GetVarInterface1_0()->AddRef,
 120   PPB_Var_Shared::GetVarInterface1_0()->Release,
 121   PPB_Var_Shared::GetVarInterface1_0()->VarFromUtf8,
 122   PPB_Var_Shared::GetVarInterface1_0()->VarToUtf8,
 123   NULL, // HasProperty
 124   NULL, // HasMethod
 125   NULL, // GetProperty
 126   NULL, // EnumerateProperties
 127   NULL, // SetProperty
 128   NULL, // RemoveProperty
 129   NULL, // Call
 130   NULL, // Construct
 131   NULL, // IsInstanceOf
 132   &CreateObject
 133 };
 134
 135 class PPP_Instance_Private_ProxyTest : public TwoWayTest {
 136  public:
 137    PPP_Instance_Private_ProxyTest()
 138        : TwoWayTest(TwoWayTest::TEST_PPP_INTERFACE) {
 139       plugin().RegisterTestInterface(PPP_INSTANCE_PRIVATE_INTERFACE,
 140                                      &ppp_instance_private_mock);
 141       plugin().RegisterTestInterface(PPP_INSTANCE_INTERFACE_1_0,
 142                                      &ppp_instance_mock);
 143       host().RegisterTestInterface(PPB_VAR_DEPRECATED_INTERFACE,
 144                                    &ppb_var_deprecated_mock);
 145   }
 146 };
 147
 148 }  // namespace
 149
 150 TEST_F(PPP_Instance_Private_ProxyTest, PPPInstancePrivate) {
 151   // This test controls its own instance; we can't use the one that
 152   // PluginProxyTestHarness provides.
 153   ASSERT_NE(kInstance, pp_instance());
 154   HostDispatcher::SetForInstance(kInstance, host().host_dispatcher());
 155
 156   // Requires dev interfaces.
 157   InterfaceList::SetProcessGlobalPermissions(
 158       PpapiPermissions::AllPermissions());
 159
 160   // This file-local global is used by the PPP_Instance mock above in order to
 161   // access PPB_Var_Deprecated.
 162   plugin_dispatcher = plugin().plugin_dispatcher();
 163
 164   // Grab the host-side proxy for PPP_Instance and PPP_Instance_Private.
 165   const PPP_Instance_Private* ppp_instance_private =
 166       static_cast<const PPP_Instance_Private*>(
 167           host().host_dispatcher()->GetProxiedInterface(
 168               PPP_INSTANCE_PRIVATE_INTERFACE));
 169   const PPP_Instance_1_1* ppp_instance = static_cast<const PPP_Instance_1_1*>(
 170       host().host_dispatcher()->GetProxiedInterface(
 171           PPP_INSTANCE_INTERFACE_1_1));
 172
 173   // Initialize an Instance, so that the plugin-side machinery will work
 174   // properly.
 175   EXPECT_EQ(PP_TRUE, ppp_instance->DidCreate(kInstance, 0, NULL, NULL));
 176
 177   // Check the plugin-side reference count.
 178   EXPECT_EQ(1, plugin().var_tracker().GetRefCountForObject(instance_obj));
 179   // Check the host-side var exists with the expected id and has 1 refcount (the
 180   // refcount on behalf of the plugin).
 181   int32 expected_host_id =
 182       plugin().var_tracker().GetHostObject(instance_obj).value.as_id;
 183   Var* host_var = host().var_tracker().GetVar(expected_host_id);
 184   ASSERT_TRUE(host_var);
 185   EXPECT_EQ(
 186       1,
 187       host().var_tracker().GetRefCountForObject(GetPPVarNoAddRef(host_var)));
 188
 189   // Call from the browser side to get the instance object.
 190   PP_Var host_pp_var = ppp_instance_private->GetInstanceObject(kInstance);
 191   EXPECT_EQ(instance_obj.type, host_pp_var.type);
 192   EXPECT_EQ(host_pp_var.value.as_id, expected_host_id);
 193   EXPECT_EQ(1, plugin().var_tracker().GetRefCountForObject(instance_obj));
 194   // A reference is passed to the browser, which we consume here.
 195   host().var_tracker().ReleaseVar(host_pp_var);
 196   EXPECT_EQ(1, host().var_tracker().GetRefCountForObject(host_pp_var));
 197
 198   // The plugin is going away; generally, so will all references to its instance
 199   // object.
 200   host().var_tracker().ReleaseVar(host_pp_var);
 201   // Destroy the instance. DidDestroy above decrements the reference count for
 202   // instance_obj, so it should also be destroyed.
 203   ppp_instance->DidDestroy(kInstance);
 204   EXPECT_EQ(-1, plugin().var_tracker().GetRefCountForObject(instance_obj));
 205   EXPECT_EQ(-1, host().var_tracker().GetRefCountForObject(host_pp_var));
 206 }
 207
 208 }  // namespace proxy
 209 }  // namespace ppapi
 210