Password manager internals page: Introduce logger in renderer

components/autofill/content/renderer/renderer_save_password_progress_logger_unittest.cc

+// Copyright 2014 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 "components/autofill/content/renderer/renderer_save_password_progress_logger.h"
+
+#include "components/autofill/content/common/autofill_messages.h"
+#include "ipc/ipc_test_sink.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace autofill {
+
+namespace {
+
+const char kTestText[] = "test";
+
+class TestLogger : public RendererSavePasswordProgressLogger {
+ public:
+  TestLogger() : RendererSavePasswordProgressLogger(&sink_, 0) {}
+
+  using RendererSavePasswordProgressLogger::SendLog;
+
+  // Searches for an |AutofillHostMsg_RecordSavePasswordProgress| message in the
+  // queue of sent IPC messages. If none is present, returns false. Otherwise,
+  // extracts the first |AutofillHostMsg_RecordSavePasswordProgress| message,
+  // fills the output parameter with the value of the message's parameter, and
+  // clears the queue of sent messages.
+  bool GetLogMessage(std::string* log) {
+    const uint32 kMsgID = AutofillHostMsg_RecordSavePasswordProgress::ID;
+    const IPC::Message* message = sink_.GetFirstMessageMatching(kMsgID);
+    if (!message)
+      return false;
+    Tuple1<std::string> param;
+    AutofillHostMsg_RecordSavePasswordProgress::Read(message, &param);
+    *log = param.a;
+    sink_.ClearMessages();
+    return true;
+  }
+
+ private:
+  IPC::TestSink sink_;
+};
+
+}  // namespace
+
+TEST(RendererSavePasswordProgressLoggerTest, SendLog) {
+  TestLogger logger;
+  logger.SendLog(kTestText);
+  std::string sent_log;
+  EXPECT_TRUE(logger.GetLogMessage(&sent_log));
+  EXPECT_EQ(kTestText, sent_log);
+}
+
+}  // namespace autofill