test_MemoryActor_saveHeapSnapshot_03.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Test that we can save full runtime heap snapshots when attached to the

// ParentProcessTargetActor or a ContentProcessTargetActor.

add_task(async () => {

  const { memoryFront } = await createMainProcessMemoryFront();

  const snapshotFilePath = await memoryFront.saveHeapSnapshot();

ok(

    !!(await IOUtils.stat(snapshotFilePath)),

    "Should have the heap snapshot file"

);

  const snapshot = ChromeUtils.readHeapSnapshot(snapshotFilePath);

ok(

    HeapSnapshot.isInstance(snapshot),

    "And we should be able to read a HeapSnapshot instance from the file"

);

});