test: split promisified timers test for coverage purposes

Because of lazy loading, running promisified timers tests for setTimeout
and setImmediate from the same file means that there is a piece of code
that doesn't get covered. Split into separate files to cover everything.

Refs: https://coverage.nodejs.org/coverage-290c158018ac0277/lib/timers.js.html#L269

test/parallel/test-timers-immediate-promisified.js

@@ -0,0 +1,99 @@
+// Flags: --no-warnings --expose-internals
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const timers = require('timers');
+const { promisify } = require('util');
+const child_process = require('child_process');
+
+// TODO(benjamingr) - refactor to use getEventListeners when #35991 lands
+const { NodeEventTarget } = require('internal/event_target');
+
+const timerPromises = require('timers/promises');
+
+const setPromiseImmediate = promisify(timers.setImmediate);
+const exec = promisify(child_process.exec);
+
+assert.strictEqual(setPromiseImmediate, timerPromises.setImmediate);
+
+process.on('multipleResolves', common.mustNotCall());
+
+{
+  const promise = setPromiseImmediate();
+  promise.then(common.mustCall((value) => {
+    assert.strictEqual(value, undefined);
+  }));
+}
+
+{
+  const promise = setPromiseImmediate('foobar');
+  promise.then(common.mustCall((value) => {
+    assert.strictEqual(value, 'foobar');
+  }));
+}
+
+{
+  const ac = new AbortController();
+  const signal = ac.signal;
+  assert.rejects(setPromiseImmediate(10, { signal }), /AbortError/)
+    .then(common.mustCall());
+  ac.abort();
+}
+
+{
+  const signal = AbortSignal.abort(); // Abort in advance
+  assert.rejects(setPromiseImmediate(10, { signal }), /AbortError/)
+    .then(common.mustCall());
+}
+
+{
+  // Check that aborting after resolve will not reject.
+  const ac = new AbortController();
+  const signal = ac.signal;
+  setPromiseImmediate(10, { signal })
+    .then(common.mustCall(() => { ac.abort(); }))
+    .then(common.mustCall());
+}
+
+{
+  // Check that timer adding signals does not leak handlers
+  const signal = new NodeEventTarget();
+  signal.aborted = false;
+  setPromiseImmediate(0, { signal }).finally(common.mustCall(() => {
+    assert.strictEqual(signal.listenerCount('abort'), 0);
+  }));
+}
+
+{
+  Promise.all(
+    [1, '', false, Infinity].map(
+      (i) => assert.rejects(setPromiseImmediate(10, i), {
+        code: 'ERR_INVALID_ARG_TYPE'
+      })
+    )
+  ).then(common.mustCall());
+
+  Promise.all(
+    [1, '', false, Infinity, null, {}].map(
+      (signal) => assert.rejects(setPromiseImmediate(10, { signal }), {
+        code: 'ERR_INVALID_ARG_TYPE'
+      })
+    )
+  ).then(common.mustCall());
+
+  Promise.all(
+    [1, '', Infinity, null, {}].map(
+      (ref) => assert.rejects(setPromiseImmediate(10, { ref }), {
+        code: 'ERR_INVALID_ARG_TYPE'
+      })
+    )
+  ).then(common.mustCall());
+}
+
+{
+  exec(`${process.execPath} -pe "const assert = require('assert');` +
+    'require(\'timers/promises\').setImmediate(null, { ref: false }).' +
+    'then(assert.fail)"').then(common.mustCall(({ stderr }) => {
+    assert.strictEqual(stderr, '');
+  }));
+}

test/parallel/test-timers-promisified.js → test/parallel/test-timers-interval-promisified.js

@@ -12,43 +12,12 @@ const { NodeEventTarget } = require('internal/event_target');
 const timerPromises = require('timers/promises');
 
 const setPromiseTimeout = promisify(timers.setTimeout);
-const setPromiseImmediate = promisify(timers.setImmediate);
 const exec = promisify(child_process.exec);
 
-assert.strictEqual(setPromiseTimeout, timerPromises.setTimeout);
-assert.strictEqual(setPromiseImmediate, timerPromises.setImmediate);
 const { setInterval } = timerPromises;
 
 process.on('multipleResolves', common.mustNotCall());
 
-{
-  const promise = setPromiseTimeout(1);
-  promise.then(common.mustCall((value) => {
-    assert.strictEqual(value, undefined);
-  }));
-}
-
-{
-  const promise = setPromiseTimeout(1, 'foobar');
-  promise.then(common.mustCall((value) => {
-    assert.strictEqual(value, 'foobar');
-  }));
-}
-
-{
-  const promise = setPromiseImmediate();
-  promise.then(common.mustCall((value) => {
-    assert.strictEqual(value, undefined);
-  }));
-}
-
-{
-  const promise = setPromiseImmediate('foobar');
-  promise.then(common.mustCall((value) => {
-    assert.strictEqual(value, 'foobar');
-  }));
-}
-
 {
   const iterable = setInterval(1, undefined);
   const iterator = iterable[Symbol.asyncIterator]();
@@ -89,34 +58,6 @@ process.on('multipleResolves', common.mustNotCall());
     .then(common.mustCall());
 }
 
-{
-  const ac = new AbortController();
-  const signal = ac.signal;
-  assert.rejects(setPromiseTimeout(10, undefined, { signal }), /AbortError/)
-    .then(common.mustCall());
-  ac.abort();
-}
-
-{
-  const signal = AbortSignal.abort(); // Abort in advance
-  assert.rejects(setPromiseTimeout(10, undefined, { signal }), /AbortError/)
-    .then(common.mustCall());
-}
-
-{
-  const ac = new AbortController();
-  const signal = ac.signal;
-  assert.rejects(setPromiseImmediate(10, { signal }), /AbortError/)
-    .then(common.mustCall());
-  ac.abort();
-}
-
-{
-  const signal = AbortSignal.abort(); // Abort in advance
-  assert.rejects(setPromiseImmediate(10, { signal }), /AbortError/)
-    .then(common.mustCall());
-}
-
 {
   const signal = AbortSignal.abort(); // Abort in advance
 
@@ -155,23 +96,6 @@ process.on('multipleResolves', common.mustNotCall());
   assert.rejects(abortPromise, /AbortError/).then(common.mustCall());
 }
 
-{
-  // Check that aborting after resolve will not reject.
-  const ac = new AbortController();
-  const signal = ac.signal;
-  setPromiseTimeout(10, undefined, { signal })
-    .then(common.mustCall(() => { ac.abort(); }))
-    .then(common.mustCall());
-}
-{
-  // Check that aborting after resolve will not reject.
-  const ac = new AbortController();
-  const signal = ac.signal;
-  setPromiseImmediate(10, { signal })
-    .then(common.mustCall(() => { ac.abort(); }))
-    .then(common.mustCall());
-}
-
 {
   [1, '', Infinity, null, {}].forEach((ref) => {
     const iterable = setInterval(10, undefined, { ref });
@@ -192,24 +116,6 @@ process.on('multipleResolves', common.mustNotCall());
   });
 }
 
-{
-  // Check that timer adding signals does not leak handlers
-  const signal = new NodeEventTarget();
-  signal.aborted = false;
-  setPromiseTimeout(0, null, { signal }).finally(common.mustCall(() => {
-    assert.strictEqual(signal.listenerCount('abort'), 0);
-  }));
-}
-
-{
-  // Check that timer adding signals does not leak handlers
-  const signal = new NodeEventTarget();
-  signal.aborted = false;
-  setPromiseImmediate(0, { signal }).finally(common.mustCall(() => {
-    assert.strictEqual(signal.listenerCount('abort'), 0);
-  }));
-}
-
 {
   // Check that timer adding signals does not leak handlers
   const signal = new NodeEventTarget();
@@ -247,72 +153,6 @@ process.on('multipleResolves', common.mustNotCall());
   tryBreak().then(common.mustCall());
 }
 
-{
-  Promise.all(
-    [1, '', false, Infinity].map(
-      (i) => assert.rejects(setPromiseImmediate(10, i), {
-        code: 'ERR_INVALID_ARG_TYPE'
-      })
-    )
-  ).then(common.mustCall());
-
-  Promise.all(
-    [1, '', false, Infinity, null, {}].map(
-      (signal) => assert.rejects(setPromiseImmediate(10, { signal }), {
-        code: 'ERR_INVALID_ARG_TYPE'
-      })
-    )
-  ).then(common.mustCall());
-
-  Promise.all(
-    [1, '', Infinity, null, {}].map(
-      (ref) => assert.rejects(setPromiseImmediate(10, { ref }), {
-        code: 'ERR_INVALID_ARG_TYPE'
-      })
-    )
-  ).then(common.mustCall());
-
-  Promise.all(
-    [1, '', false, Infinity].map(
-      (i) => assert.rejects(setPromiseTimeout(10, null, i), {
-        code: 'ERR_INVALID_ARG_TYPE'
-      })
-    )
-  ).then(common.mustCall());
-
-  Promise.all(
-    [1, '', false, Infinity, null, {}].map(
-      (signal) => assert.rejects(setPromiseTimeout(10, null, { signal }), {
-        code: 'ERR_INVALID_ARG_TYPE'
-      })
-    )
-  ).then(common.mustCall());
-
-  Promise.all(
-    [1, '', Infinity, null, {}].map(
-      (ref) => assert.rejects(setPromiseTimeout(10, null, { ref }), {
-        code: 'ERR_INVALID_ARG_TYPE'
-      })
-    )
-  ).then(common.mustCall());
-}
-
-{
-  exec(`${process.execPath} -pe "const assert = require('assert');` +
-    'require(\'timers/promises\').setTimeout(1000, null, { ref: false }).' +
-    'then(assert.fail)"').then(common.mustCall(({ stderr }) => {
-    assert.strictEqual(stderr, '');
-  }));
-}
-
-{
-  exec(`${process.execPath} -pe "const assert = require('assert');` +
-    'require(\'timers/promises\').setImmediate(null, { ref: false }).' +
-    'then(assert.fail)"').then(common.mustCall(({ stderr }) => {
-    assert.strictEqual(stderr, '');
-  }));
-}
-
 {
   exec(`${process.execPath} -pe "const assert = require('assert');` +
     'const interval = require(\'timers/promises\')' +