test: add test for profile command of node inspect

PR-URL: nodejs/node#43058
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Akhil Marsonya <akhil.marsonya27@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>

test/sequential/test-debugger-profile-command.js

@@ -0,0 +1,35 @@
+'use strict';
+const common = require('../common');
+
+common.skipIfInspectorDisabled();
+
+const fixtures = require('../common/fixtures');
+const startCLI = require('../common/debugger');
+
+const assert = require('assert');
+const fs = require('fs');
+const path = require('path');
+
+const cli = startCLI([fixtures.path('debugger/empty.js')]);
+
+const rootDir = path.resolve(__dirname, '..', '..');
+
+(async () => {
+  await cli.waitForInitialBreak();
+  await cli.waitForPrompt();
+  await cli.command('profile');
+  await cli.command('profileEnd');
+  assert.match(cli.output, /\[Profile \d+μs\]/);
+  await cli.command('profiles');
+  assert.match(cli.output, /\[ \[Profile \d+μs\] \]/);
+  await cli.command('profiles[0].save()');
+  assert.match(cli.output, /Saved profile to .*node\.cpuprofile/);
+
+  const cpuprofile = path.resolve(rootDir, 'node.cpuprofile');
+  const data = JSON.parse(fs.readFileSync(cpuprofile, 'utf8'));
+  assert.strictEqual(Array.isArray(data.nodes), true);
+
+  fs.rmSync(cpuprofile);
+})()
+.then(common.mustCall())
+.finally(() => cli.quit());