Add UploadProgressTracker unittest

content/browser/loader/upload_progress_tracker_unittest.cc

Index: content/browser/loader/upload_progress_tracker_unittest.cc
diff --git a/content/browser/loader/upload_progress_tracker_unittest.cc b/content/browser/loader/upload_progress_tracker_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..508368d41f1be66b57133cac8e29e079e2ac7c07
--- /dev/null
+++ b/content/browser/loader/upload_progress_tracker_unittest.cc
@@ -0,0 +1,256 @@
+// 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 "content/browser/loader/upload_progress_tracker.h"
+
+#include "base/bind.h"
+#include "base/location.h"
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/single_thread_task_runner.h"
+#include "base/test/test_simple_task_runner.h"
+#include "net/base/upload_progress.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+namespace {
+
+class TestingUploadProgressTracker : public UploadProgressTracker {
+ public:
+  TestingUploadProgressTracker(
+      const tracked_objects::Location& location,
+      UploadProgressReportCallback report_callback,
+      scoped_refptr<base::SingleThreadTaskRunner> task_runner)
+      : UploadProgressTracker(location,
+                              std::move(report_callback),
+                              nullptr,
+                              std::move(task_runner)),
+        current_time_(base::TimeTicks::Now()) {}
+
+  void set_upload_progress(const net::UploadProgress& upload_progress) {
+    upload_progress_ = upload_progress;
+  }
+
+  void set_current_time(const base::TimeTicks& current_time) {
+    current_time_ = current_time;
+  }
+
+ private:
+  // UploadProgressTracker overrides.
+  base::TimeTicks GetCurrentTime() const override { return current_time_; }
+  net::UploadProgress GetUploadProgress() const override {
+    return upload_progress_;
+  }
+
+  base::TimeTicks current_time_;
+  net::UploadProgress upload_progress_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestingUploadProgressTracker);
+};
+
+}  // namespace
+
+class UploadProgressTrackerTest : public ::testing::Test {
+ public:
+  UploadProgressTrackerTest()
+      : task_runner_(new base::TestSimpleTaskRunner),
+        upload_progress_tracker_(
+            FROM_HERE,
+            base::BindRepeating(
+                &UploadProgressTrackerTest::OnUploadProgressReported,
+                base::Unretained(this)),
+            task_runner_) {}
+
+ private:
+  void OnUploadProgressReported(const net::UploadProgress& progress) {
+    ++report_count_;
+    reported_position_ = progress.position();
+    reported_total_size_ = progress.size();
+  }
+
+ protected:
+  int report_count_ = 0;
+  int64_t reported_position_ = 0;
+  int64_t reported_total_size_ = 0;
+
+  scoped_refptr<base::TestSimpleTaskRunner> task_runner_;
+  TestingUploadProgressTracker upload_progress_tracker_;
+
+  DISALLOW_COPY_AND_ASSIGN(UploadProgressTrackerTest);
+};
+
+TEST_F(UploadProgressTrackerTest, NoACK) {
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(500, 1000));
+
+  // The first timer task calls ReportUploadProgress.
+  EXPECT_EQ(0, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+  EXPECT_EQ(500, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(750, 1000));
+
+  // The second timer task does nothing, since the first report didn't send the
+  // ACK.
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+}
+
+TEST_F(UploadProgressTrackerTest, NoUpload) {
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(0, 0));
+
+  // UploadProgressTracker does nothing on the empty upload content.
+  EXPECT_EQ(0, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(0, report_count_);
+}
+
+TEST_F(UploadProgressTrackerTest, NoProgress) {
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(500, 1000));
+
+  // The first timer task calls ReportUploadProgress.
+  EXPECT_EQ(0, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+  EXPECT_EQ(500, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+
+  upload_progress_tracker_.OnAckReceived();
+
+  // The second time doesn't call ReportUploadProgress since there's no
+  // progress.
+  EXPECT_EQ(1, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+}
+
+TEST_F(UploadProgressTrackerTest, Finished) {
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(999, 1000));
+
+  // The first timer task calls ReportUploadProgress.
+  EXPECT_EQ(0, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+  EXPECT_EQ(999, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+
+  upload_progress_tracker_.OnAckReceived();
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(1000, 1000));
+
+  // The second timer task calls ReportUploadProgress for reporting the
+  // completion.
+  EXPECT_EQ(1, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(2, report_count_);
+  EXPECT_EQ(1000, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+}
+
+TEST_F(UploadProgressTrackerTest, Progress) {
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(500, 1000));
+
+  // The first timer task calls ReportUploadProgress.
+  EXPECT_EQ(0, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+  EXPECT_EQ(500, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+
+  upload_progress_tracker_.OnAckReceived();
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(750, 1000));
+
+  // The second timer task calls ReportUploadProgress since the progress is
+  // big enough to report.
+  EXPECT_EQ(1, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(2, report_count_);
+  EXPECT_EQ(750, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+}
+
+TEST_F(UploadProgressTrackerTest, TimePassed) {
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(500, 1000));
+
+  // The first timer task calls ReportUploadProgress.
+  EXPECT_EQ(0, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+  EXPECT_EQ(500, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+
+  upload_progress_tracker_.OnAckReceived();
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(501, 1000));
+
+  // The second timer task doesn't call ReportUploadProgress since the progress
+  // is too small to report it.
+  EXPECT_EQ(1, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+
+  upload_progress_tracker_.set_current_time(base::TimeTicks::Now() +
+                                            base::TimeDelta::FromSeconds(1));
+
+  // The third timer task calls ReportUploadProgress since it's been long time
+  // from the last report.
+  EXPECT_EQ(1, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(2, report_count_);
+  EXPECT_EQ(501, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+}
+
+TEST_F(UploadProgressTrackerTest, Rewound) {
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(500, 1000));
+
+  // The first timer task calls ReportUploadProgress.
+  EXPECT_EQ(0, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+  EXPECT_EQ(500, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+
+  upload_progress_tracker_.OnAckReceived();
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(250, 1000));
+
+  // The second timer task doesn't call ReportUploadProgress since the progress
+  // was rewound.
+  EXPECT_EQ(1, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+
+  upload_progress_tracker_.set_current_time(base::TimeTicks::Now() +
+                                            base::TimeDelta::FromSeconds(1));
+
+  // Even after a good amount of time passed, the rewound progress should not be
+  // reported.
+  EXPECT_EQ(1, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+}
+
+TEST_F(UploadProgressTrackerTest, Completed) {
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(500, 1000));
+
+  // The first timer task calls ReportUploadProgress.
+  EXPECT_EQ(0, report_count_);
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(1, report_count_);
+  EXPECT_EQ(500, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+
+  upload_progress_tracker_.set_upload_progress(net::UploadProgress(1000, 1000));
+
+  // OnUploadCompleted runs ReportUploadProgress even without Ack nor timer.
+  upload_progress_tracker_.OnUploadCompleted();
+  EXPECT_EQ(2, report_count_);
+  EXPECT_EQ(1000, reported_position_);
+  EXPECT_EQ(1000, reported_total_size_);
+
+  task_runner_->RunPendingTasks();
+  EXPECT_EQ(2, report_count_);
+  EXPECT_FALSE(task_runner_->HasPendingTask());
+}
+
+}  // namespace context