devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_03.js


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/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

// Test that the HeapAnalyses{Client,Worker} bubbles errors properly when things
// go wrong.

function run_test() {
  run_next_test();
}

add_task(function* () {
  const client = new HeapAnalysesClient();

  // Snapshot file path to a file that doesn't exist.
  let failed = false;
  try {
    yield client.readHeapSnapshot(getFilePath("foo-bar-baz" + Math.random(), true));
  } catch (e) {
    failed = true;
  }
  ok(failed, "should not read heap snapshots that do not exist");

  // Snapshot file path to a file that is not a heap snapshot.
  failed = false;
  try {
    yield client.readHeapSnapshot(getFilePath("test_HeapAnalyses_takeCensus_03.js"));
  } catch (e) {
    failed = true;
  }
  ok(failed, "should not be able to read a file that is not a heap snapshot as a heap snapshot");

  const snapshotFilePath = saveNewHeapSnapshot();
  yield client.readHeapSnapshot(snapshotFilePath);
  ok(true, "Should have read the heap snapshot");

  // Bad census breakdown options.
  failed = false;
  try {
    yield client.takeCensus(snapshotFilePath, {
      breakdown: { by: "some classification that we do not have" }
    });
  } catch (e) {
    failed = true;
  }
  ok(failed, "should not be able to breakdown by an unknown classification");

  client.destroy();
});