test: really test the ttywrap bits of getasyncid

Follow-up from nodejs#18800

Code that tries to exercise tty fds must be placed in `/pseudo-tty/`.

PR-URL: nodejs#18886
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

test/pseudo-tty/test-async-wrap-getasyncid-tty.js

@@ -0,0 +1,43 @@
+'use strict';
+
+// see also test/sequential/test-async-wrap-getasyncid.js
+
+const common = require('../common');
+const assert = require('assert');
+const tty_wrap = process.binding('tty_wrap');
+const { TTYWRAP } = process.binding('async_wrap').Providers;
+const providers = { TTYWRAP };
+
+// Make sure that the TTYWRAP Provider is tested.
+{
+  const hooks = require('async_hooks').createHook({
+    init(id, type) {
+      if (type === 'NONE')
+        throw new Error('received a provider type of NONE');
+      delete providers[type];
+    },
+  }).enable();
+  process.on('beforeExit', common.mustCall(() => {
+    process.removeAllListeners('uncaughtException');
+    hooks.disable();
+
+    const objKeys = Object.keys(providers);
+    if (objKeys.length > 0)
+      process._rawDebug(objKeys);
+    assert.strictEqual(objKeys.length, 0);
+  }));
+}
+
+function testInitialized(req, ctor_name) {
+  assert.strictEqual(typeof req.getAsyncId, 'function');
+  assert(Number.isSafeInteger(req.getAsyncId()));
+  assert(req.getAsyncId() > 0);
+  assert.strictEqual(req.constructor.name, ctor_name);
+}
+
+{
+  const ttyFd = common.getTTYfd();
+
+  const handle = new tty_wrap.TTY(ttyFd, false);
+  testInitialized(handle, 'TTY');
+}

test/sequential/test-async-wrap-getasyncid.js

@@ -23,16 +23,20 @@ const { getSystemErrorName } = require('util');
     hooks.disable();
     delete providers.NONE;  // Should never be used.
 
+    // See test/pseudo-tty/test-async-wrap-getasyncid-tty.js
+    // Requires an 'actual' tty fd to be available.
+    delete providers.TTYWRAP;
+
     // TODO(jasnell): Test for these
     delete providers.HTTP2SESSION;
     delete providers.HTTP2STREAM;
     delete providers.HTTP2PING;
     delete providers.HTTP2SETTINGS;
 
-    const obj_keys = Object.keys(providers);
-    if (obj_keys.length > 0)
-      process._rawDebug(obj_keys);
-    assert.strictEqual(obj_keys.length, 0);
+    const objKeys = Object.keys(providers);
+    if (objKeys.length > 0)
+      process._rawDebug(objKeys);
+    assert.strictEqual(objKeys.length, 0);
   }));
 }
 
@@ -253,44 +257,6 @@ if (common.hasCrypto) { // eslint-disable-line node-core/crypto-check
     tls_wrap.wrap(tcp._externalStream, credentials.context, true), 'TLSWrap');
 }
 
-
-{
-  // Do our best to grab a tty fd.
-  function getTTYfd() {
-    const tty = require('tty');
-    let ttyFd = [0, 1, 2].find(tty.isatty);
-    if (ttyFd === undefined) {
-      try {
-        ttyFd = fs.openSync('/dev/tty');
-      } catch (e) {
-        // There aren't any tty fd's available to use.
-        return -1;
-      }
-    }
-    return ttyFd;
-  }
-
-  const ttyFd = getTTYfd();
-  if (ttyFd >= 0) {
-    const tty_wrap = process.binding('tty_wrap');
-    // fd may still be invalid, so guard against it.
-    const handle = (() => {
-      try {
-        return new tty_wrap.TTY(ttyFd, false);
-      } catch (e) {
-        return null;
-      }
-    })();
-    if (handle !== null)
-      testInitialized(handle, 'TTY');
-    else
-      delete providers.TTYWRAP;
-  } else {
-    delete providers.TTYWRAP;
-  }
-}
-
-
 {
   const binding = process.binding('udp_wrap');
   const handle = new binding.UDP();