[win] Create ModuleDatabase and ModuleEventSinkImpl.

chrome/browser/conflicts/module_event_sink_impl_win_unittest.cc

+// Copyright 2017 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 "chrome/browser/conflicts/module_event_sink_impl_win.h"
+
+#include <memory>
+
+#include "base/memory/ptr_util.h"
+#include "base/message_loop/message_loop.h"
+#include "chrome/browser/conflicts/module_database_win.h"
+#include "chrome/common/conflicts/module_watcher_win.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+// The address of this module in memory. The linker will take care of defining
+// this symbol.
+extern "C" IMAGE_DOS_HEADER __ImageBase;
+
+// An invalid load address.
+const uint64_t kInvalidLoadAddress = 0xDEADBEEF;
+
+}  // namespace
+
+class ModuleEventSinkImplTest : public testing::Test {
+ protected:
+  ModuleEventSinkImplTest()
+      : message_loop_(base::MakeUnique<base::MessageLoop>()),
+        module_database_(
+            base::MakeUnique<ModuleDatabase>(message_loop_->task_runner())) {}
+
+  void CreateModuleSinkImpl() {
+    module_event_sink_impl_ = base::MakeUnique<ModuleEventSinkImpl>(
+        ::GetCurrentProcess(), content::PROCESS_TYPE_BROWSER,
+        module_database_.get());
+  }
+
+  ModuleDatabase* module_database() {
+    return module_event_sink_impl_->module_database_;
+  }
+
+  const ModuleDatabase::ModuleMap& modules() {
+    return module_database_->modules_;
+  }
+
+  const ModuleDatabase::ProcessMap& processes() {
+    return module_database_->processes_;
+  }
+
+  uint32_t process_id() { return module_event_sink_impl_->process_id_; }
+
+  std::unique_ptr<base::MessageLoop> message_loop_;
+  std::unique_ptr<ModuleDatabase> module_database_;
+  std::unique_ptr<ModuleEventSinkImpl> module_event_sink_impl_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ModuleEventSinkImplTest);
+};
+
+TEST_F(ModuleEventSinkImplTest, CallsForwardedAsExpected) {
+  const uintptr_t kValidLoadAddress = reinterpret_cast<uintptr_t>(&__ImageBase);
+
+  EXPECT_EQ(0u, modules().size());
+  EXPECT_EQ(0u, processes().size());
+
+  // Construction should immediately fire off a call to OnProcessStarted and
+  // create a process entry in the module database.
+  CreateModuleSinkImpl();
+  EXPECT_EQ(module_database_.get(), module_database());
+  EXPECT_EQ(::GetCurrentProcessId(), process_id());
+  EXPECT_EQ(0u, modules().size());
+  EXPECT_EQ(1u, processes().size());
+
+  // An invalid load event should not cause a module entry.
+  module_event_sink_impl_->OnModuleEvent(
+      mojom::ModuleEventType::MODULE_ALREADY_LOADED, kInvalidLoadAddress);
+  EXPECT_EQ(0u, modules().size());
+  EXPECT_EQ(1u, processes().size());
+
+  // A valid load event should cause a module entry.
+  module_event_sink_impl_->OnModuleEvent(mojom::ModuleEventType::MODULE_LOADED,
+                                         kValidLoadAddress);
+  EXPECT_EQ(1u, modules().size());
+  EXPECT_EQ(1u, processes().size());
+}