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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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64
devtools/shared/heapsnapshot/tests/gtest/DoesntCrossCompartmentBoundaries.cpp Normal file
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Test that heap snapshots walk the compartment boundaries correctly.
#include "DevTools.h"
DEF_TEST(DoesntCrossCompartmentBoundaries, {
// Create a new global to get a new compartment.
JS::CompartmentOptions options;
JS::RootedObject newGlobal(cx, JS_NewGlobalObject(cx,
getGlobalClass(),
nullptr,
JS::FireOnNewGlobalHook,
options));
ASSERT_TRUE(newGlobal);
JSCompartment* newCompartment = nullptr;
{
JSAutoCompartment ac(cx, newGlobal);
ASSERT_TRUE(JS_InitStandardClasses(cx, newGlobal));
newCompartment = js::GetContextCompartment(cx);
}
ASSERT_TRUE(newCompartment);
ASSERT_NE(newCompartment, compartment);
// Our set of target compartments is only the pre-existing compartment and
// does not include the new compartment.
JS::CompartmentSet targetCompartments;
ASSERT_TRUE(targetCompartments.init());
ASSERT_TRUE(targetCompartments.put(compartment));
FakeNode nodeA;
FakeNode nodeB;
FakeNode nodeC;
nodeA.compartment = compartment;
nodeB.compartment = nullptr;
nodeC.compartment = newCompartment;
AddEdge(nodeA, nodeB);
AddEdge(nodeB, nodeC);
::testing::NiceMock<MockWriter> writer;
// Should serialize nodeA, because it is in our target compartments.
ExpectWriteNode(writer, nodeA);
// Should serialize nodeB, because it doesn't belong to a compartment and is
// therefore assumed to be shared.
ExpectWriteNode(writer, nodeB);
// But we shouldn't ever serialize nodeC.
JS::AutoCheckCannotGC noGC(cx);
ASSERT_TRUE(WriteHeapGraph(cx,
JS::ubi::Node(&nodeA),
writer,
/* wantNames = */ false,
&targetCompartments,
noGC));
});