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// Copyright 2016 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 "third_party/blink/renderer/core/loader/progress_tracker.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/loader/empty_clients.h"
#include "third_party/blink/renderer/core/testing/page_test_base.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_response.h"
namespace blink {
class ProgressClient : public EmptyLocalFrameClient {
public:
ProgressClient() : last_progress_(0.0) {}
void ProgressEstimateChanged(double progress_estimate) override {
last_progress_ = progress_estimate;
}
double LastProgress() const { return last_progress_; }
private:
double last_progress_;
};
class ProgressTrackerTest : public PageTestBase {
public:
ProgressTrackerTest()
: response_(KURL("http://example.com"), "text/html", 1024) {}
void SetUp() override {
client_ = new ProgressClient;
PageTestBase::SetupPageWithClients(nullptr, client_.Get());
}
ProgressTracker& Progress() const { return GetFrame().Loader().Progress(); }
double LastProgress() const { return client_->LastProgress(); }
const ResourceResponse& ResponseHeaders() const { return response_; }
// Reports a 1024-byte "main resource" (VeryHigh priority) request/response
// to ProgressTracker with identifier 1, but tests are responsible for
// emulating payload and load completion.
void EmulateMainResourceRequestAndResponse() const {
Progress().ProgressStarted();
Progress().WillStartLoading(1ul, ResourceLoadPriority::kVeryHigh);
EXPECT_EQ(0.0, LastProgress());
Progress().IncrementProgress(1ul, ResponseHeaders());
EXPECT_EQ(0.0, LastProgress());
}
private:
Persistent<ProgressClient> client_;
ResourceResponse response_;
};
TEST_F(ProgressTrackerTest, Static) {
Progress().ProgressStarted();
EXPECT_EQ(0.0, LastProgress());
Progress().ProgressCompleted();
EXPECT_EQ(1.0, LastProgress());
}
TEST_F(ProgressTrackerTest, MainResourceOnly) {
EmulateMainResourceRequestAndResponse();
// .2 for committing, .25 out of .5 possible for bytes received.
Progress().IncrementProgress(1ul, 512);
EXPECT_EQ(0.45, LastProgress());
// .2 for committing, .5 for all bytes received.
Progress().CompleteProgress(1ul);
EXPECT_EQ(0.7, LastProgress());
Progress().FinishedParsing();
Progress().DidFirstContentfulPaint();
EXPECT_EQ(1.0, LastProgress());
}
TEST_F(ProgressTrackerTest, WithHighPriorirySubresource) {
EmulateMainResourceRequestAndResponse();
Progress().WillStartLoading(2ul, ResourceLoadPriority::kHigh);
Progress().IncrementProgress(2ul, ResponseHeaders());
EXPECT_EQ(0.0, LastProgress());
// .2 for committing, .25 out of .5 possible for bytes received.
Progress().IncrementProgress(1ul, 1024);
Progress().CompleteProgress(1ul);
EXPECT_EQ(0.45, LastProgress());
// .4 for finishing parsing/painting,
// .25 out of .5 possible for bytes received.
Progress().FinishedParsing();
Progress().DidFirstContentfulPaint();
EXPECT_EQ(0.65, LastProgress());
Progress().CompleteProgress(2ul);
EXPECT_EQ(1.0, LastProgress());
}
TEST_F(ProgressTrackerTest, WithMediumPrioritySubresource) {
EmulateMainResourceRequestAndResponse();
Progress().WillStartLoading(2ul, ResourceLoadPriority::kMedium);
Progress().IncrementProgress(2ul, ResponseHeaders());
EXPECT_EQ(0.0, LastProgress());
// .2 for committing, .5 for all bytes received.
// Medium priority resource is ignored.
Progress().CompleteProgress(1ul);
EXPECT_EQ(0.7, LastProgress());
Progress().FinishedParsing();
Progress().DidFirstContentfulPaint();
EXPECT_EQ(1.0, LastProgress());
}
TEST_F(ProgressTrackerTest, FinishParsingBeforeContentfulPaint) {
EmulateMainResourceRequestAndResponse();
// .2 for committing, .5 for all bytes received.
Progress().CompleteProgress(1ul);
EXPECT_EQ(0.7, LastProgress());
Progress().FinishedParsing();
EXPECT_EQ(0.8, LastProgress());
Progress().DidFirstContentfulPaint();
EXPECT_EQ(1.0, LastProgress());
}
TEST_F(ProgressTrackerTest, ContentfulPaintBeforeFinishParsing) {
EmulateMainResourceRequestAndResponse();
// .2 for committing, .5 for all bytes received.
Progress().CompleteProgress(1ul);
EXPECT_EQ(0.7, LastProgress());
Progress().DidFirstContentfulPaint();
EXPECT_EQ(0.8, LastProgress());
Progress().FinishedParsing();
EXPECT_EQ(1.0, LastProgress());
}
} // namespace blink
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