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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 "base/json/json_reader.h"
#include "base/trace_event/trace_config.h"
#include "base/values.h"
#include "content/browser/devtools/protocol/tracing_handler.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
namespace protocol {
namespace {
const char kCustomTraceConfigString[] =
"{"
"\"enable_argument_filter\":true,"
"\"enable_systrace\":true,"
"\"excluded_categories\":[\"excluded\",\"exc_pattern*\"],"
"\"included_categories\":[\"included\","
"\"inc_pattern*\","
"\"disabled-by-default-cc\","
"\"disabled-by-default-memory-infra\"],"
"\"memory_dump_config\":{"
"\"allowed_dump_modes\":[\"background\",\"light\",\"detailed\"],"
"\"triggers\":["
"{"
"\"min_time_between_dumps_ms\":50,"
"\"mode\":\"light\","
"\"type\":\"periodic_interval\""
"},"
"{"
"\"min_time_between_dumps_ms\":1000,"
"\"mode\":\"detailed\","
"\"type\":\"periodic_interval\""
"}"
"]"
"},"
"\"record_mode\":\"record-continuously\""
"}";
const char kCustomTraceConfigStringDevToolsStyle[] =
"{"
"\"enableArgumentFilter\":true,"
"\"enableSystrace\":true,"
"\"excludedCategories\":[\"excluded\",\"exc_pattern*\"],"
"\"includedCategories\":[\"included\","
"\"inc_pattern*\","
"\"disabled-by-default-cc\","
"\"disabled-by-default-memory-infra\"],"
"\"memoryDumpConfig\":{"
"\"allowedDumpModes\":[\"background\",\"light\",\"detailed\"],"
"\"triggers\":["
"{"
"\"minTimeBetweenDumpsMs\":50,"
"\"mode\":\"light\","
"\"type\":\"periodic_interval\""
"},"
"{"
"\"minTimeBetweenDumpsMs\":1000,"
"\"mode\":\"detailed\","
"\"type\":\"periodic_interval\""
"}"
"]"
"},"
"\"recordMode\":\"recordContinuously\""
"}";
} // namespace
class TracingHandlerTest : public testing::Test {
public:
void SetUp() override {
tracing_handler_.reset(new TracingHandler(nullptr, nullptr));
}
void TearDown() override { tracing_handler_.reset(); }
std::string GetValidTraceFragment(const std::string& trace_fragment) {
const std::string valid_trace_fragment =
tracing_handler_->UpdateTraceDataBuffer(trace_fragment);
return valid_trace_fragment.substr(
tracing_handler_->trace_data_buffer_state_.offset);
}
private:
std::unique_ptr<TracingHandler> tracing_handler_;
};
TEST_F(TracingHandlerTest, GetTraceConfigFromDevToolsConfig) {
std::unique_ptr<base::Value> value =
base::JSONReader::Read(kCustomTraceConfigStringDevToolsStyle);
std::unique_ptr<base::DictionaryValue> devtools_style_dict(
static_cast<base::DictionaryValue*>(value.release()));
base::trace_event::TraceConfig trace_config =
TracingHandler::GetTraceConfigFromDevToolsConfig(*devtools_style_dict);
EXPECT_STREQ(kCustomTraceConfigString, trace_config.ToString().c_str());
}
TEST_F(TracingHandlerTest, SimpleGetValidTraceFragment) {
// No prefix is valid.
EXPECT_EQ("", GetValidTraceFragment("{pid: 1, "));
// The longest valid prefix of "{pid: 1, args: {}}, {pid: 2" is
// "{pid: 1, args: {}}".
EXPECT_EQ("{pid: 1, args: {}}", GetValidTraceFragment("args: {}}, {pid: 2"));
EXPECT_EQ("{pid: 2}, {pid: 3}", GetValidTraceFragment("}, {pid: 3}"));
}
TEST_F(TracingHandlerTest, GetValidTraceFragmentBreakBeforeComma) {
EXPECT_EQ("{pid: 1}", GetValidTraceFragment("{pid: 1}"));
// The comma should be ignored.
EXPECT_EQ("{pid: 2}", GetValidTraceFragment(",{pid: 2}"));
}
TEST_F(TracingHandlerTest, ComplexGetValidTraceFragment) {
const std::string chunk1 = "{\"pid\":1,\"args\":{\"key\":\"}\"},\"tid\":1}";
const std::string chunk2 =
"{\"pid\":2,\"args\":{\"key\":{\"key\":\"\\\"t}\"},\"key2\":2},\"tid\":"
"2}";
const std::string trace_data = chunk1 + "," + chunk2;
EXPECT_EQ("", GetValidTraceFragment(trace_data.substr(0, chunk1.size() - 1)));
EXPECT_EQ(chunk1, GetValidTraceFragment(trace_data.substr(
chunk1.size() - 1, trace_data.size() - chunk1.size())));
EXPECT_EQ(chunk2,
GetValidTraceFragment(trace_data.substr(trace_data.size() - 1, 1)));
}
} // namespace protocol
} // namespace content
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