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'use strict'; const common = require('../common'); common.skipIfInspectorDisabled(); const fixtures = require('../common/fixtures'); const startCLI = require('../common/debugger'); const tmpdir = require('../common/tmpdir'); const path = require('path'); tmpdir.refresh(); const { readFileSync } = require('fs'); const filename = path.join(tmpdir.path, 'node.heapsnapshot'); // Heap profiler take snapshot. { const opts = { cwd: tmpdir.path }; const cli = startCLI([fixtures.path('debugger/empty.js')], [], opts); function onFatal(error) { cli.quit(); throw error; } // Check that the snapshot is valid JSON. return cli.waitForInitialBreak() .then(() => cli.waitForPrompt()) .then(() => cli.command('takeHeapSnapshot()')) .then(() => JSON.parse(readFileSync(filename, 'utf8'))) // Check that two simultaneous snapshots don't step all over each other. // Refs: https://github.com/nodejs/node/issues/39555 .then(() => cli.command('takeHeapSnapshot(); takeHeapSnapshot()')) .then(() => JSON.parse(readFileSync(filename, 'utf8'))) .then(() => cli.quit()) .then(null, onFatal); }