Use fake setTimeout in ShadowRealm scopes
Timers are not exposed in ShadowRealm globals, so allow
Test.prototype.step_timeout() and Test.prototype.step_wait_func() to fall
back to a 'fake' setTimeout implementation. This allows tests that use
these harness features to also run in ShadowRealm scopes.
The fake setTimeout is based on the one in test262, h/t Rick Waldron.
diff --git a/resources/testharness.js b/resources/testharness.js
index 1df02ca..1a6a4bb 100644
--- a/resources/testharness.js
+++ b/resources/testharness.js
@@ -1201,6 +1201,23 @@
object.addEventListener(event, callback, false);
}
+ // Internal helper function to provide timeout-like functionality in
+ // environments where there is no setTimeout(). (No timeout ID or
+ // clearTimeout().)
+ function fake_set_timeout(callback, delay) {
+ var p = Promise.resolve();
+ var start = Date.now();
+ var end = start + delay;
+ function check() {
+ if ((end - Date.now()) > 0) {
+ p.then(check);
+ } else {
+ callback();
+ }
+ }
+ p.then(check);
+ }
+
/**
* Global version of :js:func:`Test.step_timeout` for use in single page tests.
*
@@ -1212,7 +1229,8 @@
function step_timeout(func, timeout) {
var outer_this = this;
var args = Array.prototype.slice.call(arguments, 2);
- return setTimeout(function() {
+ var local_set_timeout = typeof global_scope.setTimeout === "undefined" ? fake_set_timeout : setTimeout;
+ return local_set_timeout(function() {
func.apply(outer_this, args);
}, timeout * tests.timeout_multiplier);
}
@@ -2720,7 +2738,8 @@
Test.prototype.step_timeout = function(func, timeout) {
var test_this = this;
var args = Array.prototype.slice.call(arguments, 2);
- return setTimeout(this.step_func(function() {
+ var local_set_timeout = typeof global_scope.setTimeout === "undefined" ? fake_set_timeout : setTimeout;
+ return local_set_timeout(this.step_func(function() {
return func.apply(test_this, args);
}), timeout * tests.timeout_multiplier);
};
@@ -2751,6 +2770,7 @@
var timeout_full = timeout * tests.timeout_multiplier;
var remaining = Math.ceil(timeout_full / interval);
var test_this = this;
+ var local_set_timeout = typeof global_scope.setTimeout === 'undefined' ? fake_set_timeout : setTimeout;
const step = test_this.step_func((result) => {
if (result) {
@@ -2761,7 +2781,7 @@
"Timed out waiting on condition");
}
remaining--;
- setTimeout(wait_for_inner, interval);
+ local_set_timeout(wait_for_inner, interval);
}
});
