diff options
Diffstat (limited to 'toolkit/components/telemetry/tests/gtest/TestCounters.cpp')
| -rw-r--r-- | toolkit/components/telemetry/tests/gtest/TestCounters.cpp | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/toolkit/components/telemetry/tests/gtest/TestCounters.cpp b/toolkit/components/telemetry/tests/gtest/TestCounters.cpp new file mode 100644 index 0000000000..79b4c66bb9 --- /dev/null +++ b/toolkit/components/telemetry/tests/gtest/TestCounters.cpp @@ -0,0 +1,173 @@ +/* vim:set ts=2 sw=2 sts=0 et: */ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ + */ + +#include "gtest/gtest.h" +#include "js/Conversions.h" +#include "mozilla/Telemetry.h" +#include "TelemetryFixture.h" +#include "TelemetryTestHelpers.h" + +using namespace mozilla; +using namespace TelemetryTestHelpers; + +TEST_F(TelemetryTestFixture, AutoCounter) { + const uint32_t kExpectedValue = 100; + AutoJSContextWithGlobal cx(mCleanGlobal); + + const char* telemetryTestCountName = + Telemetry::GetHistogramName(Telemetry::TELEMETRY_TEST_COUNT); + + GetAndClearHistogram(cx.GetJSContext(), mTelemetry, "TELEMETRY_TEST_COUNT"_ns, + false); + + // Accumulate in the histogram + { + Telemetry::AutoCounter<Telemetry::TELEMETRY_TEST_COUNT> autoCounter; + autoCounter += kExpectedValue / 2; + } + // This counter should not accumulate since it does not go out of scope + Telemetry::AutoCounter<Telemetry::TELEMETRY_TEST_COUNT> autoCounter; + autoCounter += kExpectedValue; + // Accumulate a second time in the histogram + { + Telemetry::AutoCounter<Telemetry::TELEMETRY_TEST_COUNT> autoCounter; + autoCounter += kExpectedValue / 2; + } + + // Get a snapshot for all the histograms + JS::Rooted<JS::Value> snapshot(cx.GetJSContext()); + GetSnapshots(cx.GetJSContext(), mTelemetry, telemetryTestCountName, &snapshot, + false); + + // Get the histogram from the snapshot + JS::Rooted<JS::Value> histogram(cx.GetJSContext()); + GetProperty(cx.GetJSContext(), telemetryTestCountName, snapshot, &histogram); + + // Get "sum" property from histogram + JS::Rooted<JS::Value> sum(cx.GetJSContext()); + GetProperty(cx.GetJSContext(), "sum", histogram, &sum); + + // Check that the "sum" stored in the histogram matches with |kExpectedValue| + uint32_t uSum = 0; + JS::ToUint32(cx.GetJSContext(), sum, &uSum); + ASSERT_EQ(uSum, kExpectedValue) + << "The histogram is not returning expected value"; +} + +TEST_F(TelemetryTestFixture, AutoCounterUnderflow) { + const uint32_t kExpectedValue = 0; + AutoJSContextWithGlobal cx(mCleanGlobal); + + const char* telemetryTestCountName = + Telemetry::GetHistogramName(Telemetry::TELEMETRY_TEST_COUNT); + + GetAndClearHistogram(cx.GetJSContext(), mTelemetry, "TELEMETRY_TEST_COUNT"_ns, + false); + + // Accumulate in the histogram + { + Telemetry::AutoCounter<Telemetry::TELEMETRY_TEST_COUNT> autoCounter; + autoCounter += -1; + } + + // Get a snapshot for all the histograms + JS::Rooted<JS::Value> snapshot(cx.GetJSContext()); + GetSnapshots(cx.GetJSContext(), mTelemetry, telemetryTestCountName, &snapshot, + false); + + // Get the histogram from the snapshot + JS::Rooted<JS::Value> histogram(cx.GetJSContext()); + GetProperty(cx.GetJSContext(), telemetryTestCountName, snapshot, &histogram); + + // Get "sum" property from histogram + JS::Rooted<JS::Value> sum(cx.GetJSContext()); + GetProperty(cx.GetJSContext(), "sum", histogram, &sum); + + // Check that the "sum" stored in the histogram matches with |kExpectedValue| + uint32_t uSum = 42; + JS::ToUint32(cx.GetJSContext(), sum, &uSum); + ASSERT_EQ(uSum, kExpectedValue) + << "The histogram is supposed to return 0 when an underflow occurs."; +} + +TEST_F(TelemetryTestFixture, RuntimeAutoCounter) { + const uint32_t kExpectedValue = 100; + AutoJSContextWithGlobal cx(mCleanGlobal); + + const char* telemetryTestCountName = + Telemetry::GetHistogramName(Telemetry::TELEMETRY_TEST_COUNT); + + GetAndClearHistogram(cx.GetJSContext(), mTelemetry, "TELEMETRY_TEST_COUNT"_ns, + false); + + // Accumulate in the histogram + { + Telemetry::RuntimeAutoCounter autoCounter(Telemetry::TELEMETRY_TEST_COUNT); + autoCounter += kExpectedValue / 2; + } + // This counter should not accumulate since it does not go out of scope + Telemetry::RuntimeAutoCounter autoCounter(Telemetry::TELEMETRY_TEST_COUNT); + autoCounter += kExpectedValue; + // Accumulate a second time in the histogram + { + Telemetry::RuntimeAutoCounter autoCounter(Telemetry::TELEMETRY_TEST_COUNT); + autoCounter += kExpectedValue / 2; + } + // Get a snapshot for all the histograms + JS::Rooted<JS::Value> snapshot(cx.GetJSContext()); + GetSnapshots(cx.GetJSContext(), mTelemetry, telemetryTestCountName, &snapshot, + false); + + // Get the histogram from the snapshot + JS::Rooted<JS::Value> histogram(cx.GetJSContext()); + GetProperty(cx.GetJSContext(), telemetryTestCountName, snapshot, &histogram); + + // Get "sum" property from histogram + JS::Rooted<JS::Value> sum(cx.GetJSContext()); + GetProperty(cx.GetJSContext(), "sum", histogram, &sum); + + // Check that the "sum" stored in the histogram matches with |kExpectedValue| + uint32_t uSum = 0; + JS::ToUint32(cx.GetJSContext(), sum, &uSum); + ASSERT_EQ(uSum, kExpectedValue) + << "The histogram is not returning expected value"; +} + +TEST_F(TelemetryTestFixture, RuntimeAutoCounterUnderflow) { + const uint32_t kExpectedValue = 0; + AutoJSContextWithGlobal cx(mCleanGlobal); + + const char* telemetryTestCountName = + Telemetry::GetHistogramName(Telemetry::TELEMETRY_TEST_COUNT); + + GetAndClearHistogram(cx.GetJSContext(), mTelemetry, "TELEMETRY_TEST_COUNT"_ns, + false); + + // Accumulate in the histogram + { + Telemetry::RuntimeAutoCounter autoCounter(Telemetry::TELEMETRY_TEST_COUNT, + kExpectedValue); + autoCounter += -1; + } + + // Get a snapshot for all the histograms + JS::Rooted<JS::Value> snapshot(cx.GetJSContext()); + GetSnapshots(cx.GetJSContext(), mTelemetry, telemetryTestCountName, &snapshot, + false); + + // Get the histogram from the snapshot + JS::Rooted<JS::Value> histogram(cx.GetJSContext()); + GetProperty(cx.GetJSContext(), telemetryTestCountName, snapshot, &histogram); + + // Get "sum" property from histogram + JS::Rooted<JS::Value> sum(cx.GetJSContext()); + GetProperty(cx.GetJSContext(), "sum", histogram, &sum); + + // Check that the "sum" stored in the histogram matches with |kExpectedValue| + uint32_t uSum = 42; + JS::ToUint32(cx.GetJSContext(), sum, &uSum); + ASSERT_EQ(uSum, kExpectedValue) + << "The histogram is supposed to return 0 when an underflow occurs."; +} |