SerializesEverythingInHeapGraphOnce.cpp

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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 everything in the heap graph gets serialized once, and only once.

#include "DevTools.h"

DEF_TEST(SerializesEverythingInHeapGraphOnce, {

  FakeNode nodeA;

  FakeNode nodeB;

  FakeNode nodeC;

  FakeNode nodeD;

  AddEdge(nodeA, nodeB);

  AddEdge(nodeB, nodeC);

  AddEdge(nodeC, nodeD);

  AddEdge(nodeD, nodeA);

  ::testing::NiceMock<MockWriter> writer;

  // Should serialize each node once.

  ExpectWriteNode(writer, nodeA);

  ExpectWriteNode(writer, nodeB);

  ExpectWriteNode(writer, nodeC);

  ExpectWriteNode(writer, nodeD);

  JS::AutoCheckCannotGC noGC(cx);

  ASSERT_TRUE(WriteHeapGraph(cx, JS::ubi::Node(&nodeA), writer,

                             /* wantNames = */ false,

                             /* zones = */ nullptr, noGC));

});