chromium/v8/test/cctest/test-sampler-api.cc

// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Tests the sampling API in include/v8.h

#include <map>
#include <string>

#include "include/v8-isolate.h"
#include "include/v8-local-handle.h"
#include "include/v8-template.h"
#include "include/v8-unwinder.h"
#include "src/flags/flags.h"
#include "test/cctest/cctest.h"

namespace {

class Sample { … };


class SamplingTestHelper { … };

SamplingTestHelper* SamplingTestHelper::instance_;

}  // namespace

// A JavaScript function which takes stack depth
// (minimum value 2) as an argument.
// When at the bottom of the recursion,
// the JavaScript code calls into C++ test code,
// waiting for the sampler to take a sample.
static const char* test_function = …;

TEST(StackDepthIsConsistent) { … }

TEST(StackDepthDoesNotExceedMaxValue) { … }

static const char* test_function_call_builtin = …;

TEST(BuiltinsInSamples) { … }

// The captured sample should have three pc values.
// They should fall in the range where the compiled code resides.
// The expected stack is:
// bottom of stack [{anon script}, outer, inner] top of stack
//                              ^      ^       ^
// sample.stack indices         2      1       0
TEST(StackFramesConsistent) { … }