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// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "v8.h"
#include "cctest.h"
using namespace v8;
namespace {
// Need to create a new isolate when FLAG_harmony_observation is on.
class HarmonyIsolate {
public:
HarmonyIsolate() {
i::FLAG_harmony_observation = true;
isolate_ = Isolate::New();
isolate_->Enter();
}
~HarmonyIsolate() {
isolate_->Exit();
isolate_->Dispose();
}
private:
Isolate* isolate_;
};
}
TEST(PerIsolateState) {
HarmonyIsolate isolate;
HandleScope scope;
LocalContext context1;
CompileRun(
"var count = 0;"
"var calls = 0;"
"var observer = function(records) { count = records.length; calls++ };"
"var obj = {};"
"Object.observe(obj, observer);");
Handle<Value> observer = CompileRun("observer");
Handle<Value> obj = CompileRun("obj");
Handle<Value> notify_fun1 = CompileRun(
"(function() { obj.foo = 'bar'; })");
Handle<Value> notify_fun2;
{
LocalContext context2;
context2->Global()->Set(String::New("obj"), obj);
notify_fun2 = CompileRun(
"(function() { obj.foo = 'baz'; })");
}
Handle<Value> notify_fun3;
{
LocalContext context3;
context3->Global()->Set(String::New("obj"), obj);
notify_fun3 = CompileRun(
"(function() { obj.foo = 'bat'; })");
}
{
LocalContext context4;
context4->Global()->Set(String::New("observer"), observer);
context4->Global()->Set(String::New("fun1"), notify_fun1);
context4->Global()->Set(String::New("fun2"), notify_fun2);
context4->Global()->Set(String::New("fun3"), notify_fun3);
CompileRun("fun1(); fun2(); fun3(); Object.deliverChangeRecords(observer)");
}
CHECK_EQ(1, CompileRun("calls")->Int32Value());
CHECK_EQ(3, CompileRun("count")->Int32Value());
}
TEST(EndOfMicrotaskDelivery) {
HarmonyIsolate isolate;
HandleScope scope;
LocalContext context;
CompileRun(
"var obj = {};"
"var count = 0;"
"var observer = function(records) { count = records.length };"
"Object.observe(obj, observer);"
"obj.foo = 'bar';");
CHECK_EQ(1, CompileRun("count")->Int32Value());
}
TEST(DeliveryOrdering) {
HarmonyIsolate isolate;
HandleScope scope;
LocalContext context;
CompileRun(
"var obj1 = {};"
"var obj2 = {};"
"var ordering = [];"
"function observer2() { ordering.push(2); };"
"function observer1() { ordering.push(1); };"
"function observer3() { ordering.push(3); };"
"Object.observe(obj1, observer1);"
"Object.observe(obj1, observer2);"
"Object.observe(obj1, observer3);"
"obj1.foo = 'bar';");
CHECK_EQ(3, CompileRun("ordering.length")->Int32Value());
CHECK_EQ(1, CompileRun("ordering[0]")->Int32Value());
CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
CHECK_EQ(3, CompileRun("ordering[2]")->Int32Value());
CompileRun(
"ordering = [];"
"Object.observe(obj2, observer3);"
"Object.observe(obj2, observer2);"
"Object.observe(obj2, observer1);"
"obj2.foo = 'baz'");
CHECK_EQ(3, CompileRun("ordering.length")->Int32Value());
CHECK_EQ(1, CompileRun("ordering[0]")->Int32Value());
CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
CHECK_EQ(3, CompileRun("ordering[2]")->Int32Value());
}
TEST(DeliveryOrderingReentrant) {
HarmonyIsolate isolate;
HandleScope scope;
LocalContext context;
CompileRun(
"var obj = {};"
"var reentered = false;"
"var ordering = [];"
"function observer1() { ordering.push(1); };"
"function observer2() {"
" if (!reentered) {"
" obj.foo = 'baz';"
" reentered = true;"
" }"
" ordering.push(2);"
"};"
"function observer3() { ordering.push(3); };"
"Object.observe(obj, observer1);"
"Object.observe(obj, observer2);"
"Object.observe(obj, observer3);"
"obj.foo = 'bar';");
CHECK_EQ(5, CompileRun("ordering.length")->Int32Value());
CHECK_EQ(1, CompileRun("ordering[0]")->Int32Value());
CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
CHECK_EQ(3, CompileRun("ordering[2]")->Int32Value());
// Note that we re-deliver to observers 1 and 2, while observer3
// already received the second record during the first round.
CHECK_EQ(1, CompileRun("ordering[3]")->Int32Value());
CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
}
TEST(ObjectHashTableGrowth) {
HarmonyIsolate isolate;
HandleScope scope;
// Initializing this context sets up initial hash tables.
LocalContext context;
Handle<Value> obj = CompileRun("obj = {};");
Handle<Value> observer = CompileRun(
"var ran = false;"
"(function() { ran = true })");
{
// As does initializing this context.
LocalContext context2;
context2->Global()->Set(String::New("obj"), obj);
context2->Global()->Set(String::New("observer"), observer);
CompileRun(
"var objArr = [];"
// 100 objects should be enough to make the hash table grow
// (and thus relocate).
"for (var i = 0; i < 100; ++i) {"
" objArr.push({});"
" Object.observe(objArr[objArr.length-1], function(){});"
"}"
"Object.observe(obj, observer);");
}
// obj is now marked "is_observed", but our map has moved.
CompileRun("obj.foo = 'bar'");
CHECK(CompileRun("ran")->BooleanValue());
}
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