test: port flaky wpt/html/webappapis/timers tests to test/sequential

Author: panva

test/fixtures/wpt/README.md

@@ -21,7 +21,6 @@ Last update:
 - html/webappapis/atob: https://github.com/web-platform-tests/wpt/tree/f267e1dca6/html/webappapis/atob
 - html/webappapis/microtask-queuing: https://github.com/web-platform-tests/wpt/tree/2c5c3c4c27/html/webappapis/microtask-queuing
 - html/webappapis/structured-clone: https://github.com/web-platform-tests/wpt/tree/47d3fb280c/html/webappapis/structured-clone
-- html/webappapis/timers: https://github.com/web-platform-tests/wpt/tree/5873f2d8f1/html/webappapis/timers
 - interfaces: https://github.com/web-platform-tests/wpt/tree/df731dab88/interfaces
 - performance-timeline: https://github.com/web-platform-tests/wpt/tree/17ebc3aea0/performance-timeline
 - resource-timing: https://github.com/web-platform-tests/wpt/tree/22d38586d0/resource-timing

test/fixtures/wpt/html/webappapis/timers/cleartimeout-clearinterval.any.js

@@ -43,10 +43,6 @@
     "commit": "47d3fb280c9c632e684dee3b78ae1f4c5d5ba640",
     "path": "html/webappapis/structured-clone"
   },
-  "html/webappapis/timers": {
-    "commit": "5873f2d8f1f7bbb9c64689e52d04498614632906",
-    "path": "html/webappapis/timers"
-  },
   "interfaces": {
     "commit": "df731dab88a1a25c04eb7e6238c11dc28fda0801",
     "path": "interfaces"

test/fixtures/wpt/html/webappapis/timers/evil-spec-example.html

@@ -0,0 +1,19 @@
+'use strict';
+
+const common = require('../common');
+
+// This is a port of https://github.com/web-platform-tests/wpt/blob/22ecfc9/html/webappapis/timers/clearinterval-from-callback.any.js
+
+let wasPreviouslyCalled = false;
+
+const handle = setInterval(() => {
+  if (!wasPreviouslyCalled) {
+    wasPreviouslyCalled = true;
+
+    clearInterval(handle);
+
+    setInterval(process.exit, 750);
+  } else {
+    common.mustNotCall()();
+  }
+}, 500);