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// Copyright 2016 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.
#include "src/init/v8.h"
#include "test/cctest/cctest.h"
namespace v8 {
namespace internal {
namespace test_usecounters {
int* global_use_counts = nullptr;
void MockUseCounterCallback(v8::Isolate* isolate,
v8::Isolate::UseCounterFeature feature) {
++global_use_counts[feature];
}
TEST(AssigmentExpressionLHSIsCall) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
LocalContext env;
int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
global_use_counts = use_counts;
CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
// AssignmentExpressions whose LHS is not a call do not increment counters
CompileRun("function f(){ a = 0; a()[b] = 0; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
CompileRun("function f(){ ++a; ++a()[b]; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
CompileRun("function f(){ 'use strict'; a = 0; a()[b] = 0; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
CompileRun("function f(){ 'use strict'; ++a; ++a()[b]; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
// AssignmentExpressions whose LHS is a call increment appropriate counters
CompileRun("function f(){ a() = 0; }");
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy] = 0;
CompileRun("function f(){ 'use strict'; a() = 0; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict] = 0;
// UpdateExpressions whose LHS is a call increment appropriate counters
CompileRun("function f(){ ++a(); }");
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy] = 0;
CompileRun("function f(){ 'use strict'; ++a(); }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict] = 0;
}
TEST(RegExpMatchIsTrueishOnNonJSRegExp) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
LocalContext env;
int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
global_use_counts = use_counts;
CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
CompileRun("new RegExp(/./); new RegExp('');");
CHECK_EQ(0, use_counts[v8::Isolate::kRegExpMatchIsTrueishOnNonJSRegExp]);
CHECK_EQ(0, use_counts[v8::Isolate::kRegExpMatchIsFalseishOnJSRegExp]);
CompileRun("let p = { [Symbol.match]: true }; new RegExp(p);");
CHECK_EQ(1, use_counts[v8::Isolate::kRegExpMatchIsTrueishOnNonJSRegExp]);
CHECK_EQ(0, use_counts[v8::Isolate::kRegExpMatchIsFalseishOnJSRegExp]);
}
TEST(RegExpMatchIsFalseishOnJSRegExp) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
LocalContext env;
int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
global_use_counts = use_counts;
CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
CompileRun("new RegExp(/./); new RegExp('');");
CHECK_EQ(0, use_counts[v8::Isolate::kRegExpMatchIsTrueishOnNonJSRegExp]);
CHECK_EQ(0, use_counts[v8::Isolate::kRegExpMatchIsFalseishOnJSRegExp]);
CompileRun("let p = /./; p[Symbol.match] = false; new RegExp(p);");
CHECK_EQ(0, use_counts[v8::Isolate::kRegExpMatchIsTrueishOnNonJSRegExp]);
CHECK_EQ(1, use_counts[v8::Isolate::kRegExpMatchIsFalseishOnJSRegExp]);
}
TEST(ObjectPrototypeHasElements) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
LocalContext env;
int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
global_use_counts = use_counts;
CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
CompileRun("var o = {}; o[1] = 2;");
CHECK_EQ(0, use_counts[v8::Isolate::kObjectPrototypeHasElements]);
CompileRun("var o = {}; var p = {}; o.__proto__ = p; p[1] = 2;");
CHECK_EQ(0, use_counts[v8::Isolate::kObjectPrototypeHasElements]);
CompileRun("Object.prototype[1] = 2;");
CHECK_EQ(1, use_counts[v8::Isolate::kObjectPrototypeHasElements]);
}
TEST(ArrayPrototypeHasElements) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
LocalContext env;
int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
global_use_counts = use_counts;
CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
CompileRun("var a = []; a[1] = 2;");
CHECK_EQ(0, use_counts[v8::Isolate::kArrayPrototypeHasElements]);
CompileRun("var a = []; var p = []; a.__proto__ = p; p[1] = 2;");
CHECK_EQ(0, use_counts[v8::Isolate::kArrayPrototypeHasElements]);
CompileRun("Array.prototype[1] = 2;");
CHECK_EQ(1, use_counts[v8::Isolate::kArrayPrototypeHasElements]);
}
} // namespace test_usecounters
} // namespace internal
} // namespace v8
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