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// Copyright 2015 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/metrics/metrics_memory_details.h"
#include "base/bind_helpers.h"
#include "base/message_loop/message_loop.h"
#include "base/test/histogram_tester.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "content/public/test/test_utils.h"
namespace {
class TestMemoryDetails : public MetricsMemoryDetails {
public:
TestMemoryDetails()
: MetricsMemoryDetails(base::Bind(&base::DoNothing), nullptr) {}
void StartFetchAndWait() {
StartFetch(FROM_CHROME_ONLY);
content::RunMessageLoop();
}
private:
~TestMemoryDetails() override {}
void OnDetailsAvailable() override {
MetricsMemoryDetails::OnDetailsAvailable();
// Exit the loop initiated by StartFetchAndWait().
base::MessageLoop::current()->Quit();
}
DISALLOW_COPY_AND_ASSIGN(TestMemoryDetails);
};
} // namespace
class MetricsMemoryDetailsBrowserTest : public InProcessBrowserTest {
public:
MetricsMemoryDetailsBrowserTest() {}
~MetricsMemoryDetailsBrowserTest() override {}
private:
DISALLOW_COPY_AND_ASSIGN(MetricsMemoryDetailsBrowserTest);
};
IN_PROC_BROWSER_TEST_F(MetricsMemoryDetailsBrowserTest, TestMemoryDetails) {
base::HistogramTester histogram_tester;
scoped_refptr<TestMemoryDetails> details(new TestMemoryDetails);
details->StartFetchAndWait();
// Memory.Browser histogram should have a single non-0 sample recorded.
histogram_tester.ExpectTotalCount("Memory.Browser", 1);
scoped_ptr<base::HistogramSamples> samples(
histogram_tester.GetHistogramSamplesSinceCreation("Memory.Browser"));
ASSERT_TRUE(samples);
EXPECT_NE(0, samples->sum());
}
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