summaryrefslogtreecommitdiffstats
path: root/dom/network/tests/add_task.js
diff options
context:
space:
mode:
authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/network/tests/add_task.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
downloadUXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip
Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/network/tests/add_task.js')
-rw-r--r--dom/network/tests/add_task.js83
1 files changed, 83 insertions, 0 deletions
diff --git a/dom/network/tests/add_task.js b/dom/network/tests/add_task.js
new file mode 100644
index 000000000..3028afdb7
--- /dev/null
+++ b/dom/network/tests/add_task.js
@@ -0,0 +1,83 @@
+// Temporary implementation of add_task for mochitest-plain until bug 1078657 is
+// implemented.
+SimpleTest.waitForExplicitFinish();
+(function(scope) {
+ var pendingTasks = [];
+ var pendingPromise = null;
+
+ // Strict spawn function that takes a known generatorFunc and assumes that
+ // every yielded value will be a Promise. If nesting is desired, then yield*
+ // should be used!
+ function spawn(generatorFunc) {
+ return new Promise(function(resolve, reject) {
+ try {
+ var iterator = generatorFunc();
+ }
+ catch (ex) {
+ ok(false, 'Problem invoking generator func: ' + ex + ': ' + ex.stack);
+ return;
+ }
+ var stepResolved = function(result) {
+ try {
+ var iterStep = iterator.next(result);
+ }
+ catch (ex) {
+ ok(false, 'Problem invoking iterator step: ' + ex + ': ' + ex.stack);
+ return;
+ }
+ if (iterStep.done) {
+ resolve(iterStep.value);
+ return;
+ }
+ if (!iterStep.value || !iterStep.value.then) {
+ ok(false, 'Iterator step returned non-Promise: ' + iterStep.value);
+ }
+ iterStep.value.then(stepResolved, generalErrback);
+ };
+ stepResolved();
+ });
+ }
+
+ function maybeSpawn(promiseOrGenerator) {
+ if (promiseOrGenerator.then) {
+ return promiseOrGenerator;
+ }
+ return spawn(promiseOrGenerator);
+ }
+
+ scope.add_task = function(thing) {
+ pendingTasks.push(thing);
+ };
+
+ function generalErrback(ex) {
+ ok(false,
+ 'A rejection happened: ' +
+ (ex ? (ex + ': ' + ex.stack) : ''));
+ }
+
+ function runNextTask() {
+ if (pendingTasks.length) {
+ pendingPromise = maybeSpawn(pendingTasks.shift());
+ pendingPromise.then(runNextTask, generalErrback);
+ } else {
+ SimpleTest.finish();
+ }
+ }
+
+ // Trigger runNextTask after we think all JS files have been loaded.
+ // The primary goal is that we can call SimpleTest.finish() after all test
+ // code has been loaded and run. We gate this based on the document's
+ // readyState.
+ var running = false;
+ function maybeStartRunning() {
+ if (!running && document.readyState === 'complete') {
+ running = true;
+ document.removeEventListener('readystateChange', maybeStartRunning);
+ // Defer to a subsequent turn of the event loop to let micro-tasks and any
+ // other clever setTimeout(0) instances run first.
+ window.setTimeout(runNextTask, 0);
+ }
+ }
+ document.addEventListener('readystatechange', maybeStartRunning);
+ maybeStartRunning();
+})(this);