test/parallel/test-inspector-heapdump.js


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'use strict';
const common = require('../common');

common.skipIfInspectorDisabled();

// Test that example code in doc/api/inspector.md continues to work with the V8
// experimental API.

const assert = require('assert');
const inspector = require('inspector');
const session = new inspector.Session();

session.connect();

const chunks = [];

session.on('HeapProfiler.addHeapSnapshotChunk', (m) => {
  chunks.push(m.params.chunk);
});

session.post('HeapProfiler.takeHeapSnapshot', null, common.mustCall((e, r) => {
  assert.ifError(e);
  assert.deepStrictEqual(r, {});
  session.disconnect();

  const profile = JSON.parse(chunks.join(''));
  assert(profile.snapshot.meta);
  assert(profile.snapshot.node_count > 0);
  assert(profile.snapshot.edge_count > 0);
}));