src: add trace events for env.cc

PR-URL: https://github.com/nodejs/node/pull/23674
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>

1 files changed, 61 insertions, 0 deletions

diff --git a/test/parallel/test-trace-events-environment.js b/test/parallel/test-trace-events-environment.js
new file mode 100644
index 0000000000..39218d0aac
--- /dev/null
+++ b/test/parallel/test-trace-events-environment.js
@@ -0,0 +1,61 @@
+// Flags: --no-warnings
+
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const cp = require('child_process');
+const path = require('path');
+const fs = require('fs');
+const tmpdir = require('../common/tmpdir');
+
+// This tests the emission of node.environment trace events
+
+if (!common.isMainThread)
+  common.skip('process.chdir is not available in Workers');
+
+const names = new Set([
+  'Environment',
+  'RunAndClearNativeImmediates',
+  'CheckImmediate',
+  'RunTimers',
+  'BeforeExit',
+  'RunCleanup',
+  'AtExit'
+]);
+
+if (process.argv[2] === 'child') {
+  // This is just so that the child has something to do.
+  1 + 1;
+  // These ensure that the RunTimers, CheckImmediate, and
+  // RunAndClearNativeImmediates appear in the list.
+  setImmediate(() => { 1 + 1; });
+  setTimeout(() => { 1 + 1; }, 1);
+} else {
+  tmpdir.refresh();
+  process.chdir(tmpdir.path);
+
+  const proc = cp.fork(__filename,
+                       [ 'child' ], {
+                         execArgv: [
+                           '--trace-event-categories',
+                           'node.environment'
+                         ]
+                       });
+
+  proc.once('exit', common.mustCall(async () => {
+    const file = path.join(tmpdir.path, 'node_trace.1.log');
+    const checkSet = new Set();
+
+    assert(fs.existsSync(file));
+    const data = await fs.promises.readFile(file);
+    JSON.parse(data.toString()).traceEvents
+      .filter((trace) => trace.cat !== '__metadata')
+      .forEach((trace) => {
+        assert.strictEqual(trace.pid, proc.pid);
+        assert(names.has(trace.name));
+        checkSet.add(trace.name);
+      });
+
+    assert.deepStrictEqual(names, checkSet);
+  }));
+}