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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/v8.h"
#include "test/cctest/cctest.h"
namespace {
int* global_use_counts = NULL;
void MockUseCounterCallback(v8::Isolate* isolate,
v8::Isolate::UseCounterFeature feature) {
++global_use_counts[feature];
}
}
TEST(DefineGetterSetterThrowUseCount) {
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);
// __defineGetter__ and __defineSetter__ do not increment
// kDefineGetterOrSetterWouldThrow on success
CompileRun(
"var a = {};"
"Object.defineProperty(a, 'b', { value: 0, configurable: true });"
"a.__defineGetter__('b', ()=>{});");
CHECK_EQ(0, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
CompileRun(
"var a = {};"
"Object.defineProperty(a, 'b', { value: 0, configurable: true });"
"a.__defineSetter__('b', ()=>{});");
CHECK_EQ(0, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
// __defineGetter__ and __defineSetter__ do not increment
// kDefineGetterOrSetterWouldThrow on other errors
v8::Local<v8::Value> resultProxyThrow = CompileRun(
"var exception;"
"try {"
"var a = new Proxy({}, { defineProperty: ()=>{throw new Error;} });"
"a.__defineGetter__('b', ()=>{});"
"} catch (e) { exception = e; }"
"exception");
CHECK_EQ(0, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
CHECK(resultProxyThrow->IsObject());
resultProxyThrow = CompileRun(
"var exception;"
"try {"
"var a = new Proxy({}, { defineProperty: ()=>{throw new Error;} });"
"a.__defineSetter__('b', ()=>{});"
"} catch (e) { exception = e; }"
"exception");
CHECK_EQ(0, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
CHECK(resultProxyThrow->IsObject());
// __defineGetter__ and __defineSetter__ increment
// kDefineGetterOrSetterWouldThrow when they would throw per spec (B.2.2.2)
CompileRun(
"var a = {};"
"Object.defineProperty(a, 'b', { value: 0, configurable: false });"
"a.__defineGetter__('b', ()=>{});");
CHECK_EQ(1, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
CompileRun(
"var a = {};"
"Object.defineProperty(a, 'b', { value: 0, configurable: false });"
"a.__defineSetter__('b', ()=>{});");
CHECK_EQ(2, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
}
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