Add superficial unit test for PrintJob. That's a start....

chrome/browser/printing/print_job_unittest.cc

+// Copyright (c) 2008 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 "base/message_loop.h"
+#include "chrome/browser/printing/print_job.h"
+#include "chrome/browser/printing/printed_pages_source.h"
+#include "googleurl/src/gurl.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+class TestSource : public printing::PrintedPagesSource {
+ public:
+  virtual void RenderOnePrintedPage(printing::PrintedDocument* document,
+                                    int page_number) {
+  }
+  virtual std::wstring RenderSourceName() {
+    return L"";
+  }
+  virtual GURL RenderSourceUrl() {
+    return GURL();
+  }
+};
+
+class TestPrintJob : public printing::PrintJob {
+ public:
+  TestPrintJob(printing::PrintedPagesSource* source, volatile bool* check)
+      : printing::PrintJob(source), check_(check) {
+  }
+  TestPrintJob(volatile bool* check) : check_(check) {
+  }
+  ~TestPrintJob() {
+    *check_ = true;
+  }
+ private:
+  volatile bool* check_;
+};
+
+class TestPrintNotifObserv : public NotificationObserver {
+ public:
+  // NotificationObserver
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details) {
+    ASSERT_EQ(NOTIFY_PRINT_JOB_EVENT, type);
+    printing::JobEventDetails::Type event_type =
+        Details<printing::JobEventDetails>(details)->type();
+    EXPECT_NE(printing::JobEventDetails::NEW_DOC, event_type);
+    EXPECT_NE(printing::JobEventDetails::NEW_PAGE, event_type);
+    EXPECT_NE(printing::JobEventDetails::PAGE_DONE, event_type);
+    EXPECT_NE(printing::JobEventDetails::DOC_DONE, event_type);
+    EXPECT_NE(printing::JobEventDetails::JOB_DONE, event_type);
+    EXPECT_NE(printing::JobEventDetails::ALL_PAGES_REQUESTED, event_type);
+    if (event_type == printing::JobEventDetails::USER_INIT_DONE ||
+        event_type == printing::JobEventDetails::USER_INIT_CANCELED ||
+        event_type == printing::JobEventDetails::DEFAULT_INIT_DONE ||
+        event_type == printing::JobEventDetails::FAILED) {
+      MessageLoop::current()->Quit();
+      return;
+    }
+  }
+};
+
+}  // namespace
+
+TEST(PrintJobTest, SimplePrint) {
+  // Test the multithreaded nature of PrintJob to make sure we can use it with
+  // known livetime.
+  TestPrintNotifObserv observ;
+  MessageLoop current;
+  NotificationService::current()->AddObserver(
+      &observ, NOTIFY_ALL,
+      NotificationService::AllSources());
+  TestSource source;
+  volatile bool check = false;
+  scoped_refptr<printing::PrintJob> job(new TestPrintJob(&source, &check));
+  job->GetSettings(printing::PrintJob::DEFAULTS, NULL);
+  EXPECT_EQ(MessageLoop::current(), job->message_loop());
+  current.Run();
+  job->Stop();
+  job = NULL;
+  EXPECT_TRUE(check);
+}
+
+TEST(PrintJobTest, SimplePrintLateInit) {
+  volatile bool check = false;
+  MessageLoop current;
+  scoped_refptr<printing::PrintJob> job(new TestPrintJob(&check));
+  job = NULL;
+  EXPECT_TRUE(check);
+  /* TODO(maruel): Test these.
+  job->Initialize()
+  job->Observe();
+  job->GetSettingsDone();
+  job->DetachWorker();
+  job->message_loop();
+  job->settings();
+  job->cookie();
+  job->GetSettings(printing::DEFAULTS, printing::ASK_USER, NULL);
+  job->StartPrinting();
+  job->Stop();
+  job->Cancel();
+  job->RequestMissingPages();
+  job->FlushJob(timeout_ms);
+  job->DisconnectSource();
+  job->is_job_pending();
+  job->is_print_dialog_box_shown();
+  job->document();
+  // Private
+  job->UpdatePrintedDocument(NULL);
+  scoped_refptr<printing::JobEventDetails> event_details;
+  job->OnNotifyPrintJobEvent(event_details);
+  job->OnDocumentDone();
+  job->ControlledWorkerShutdown();
+  */
+}