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// META: script=performanceobservers.js
test(function () {
const obs = new PerformanceObserver(() => {});
assert_throws_js(TypeError, function () {
obs.observe({entryTypes: "mark"});
});
}, "entryTypes must be a sequence or throw a TypeError");
test(function () {
const obs = new PerformanceObserver(() => {});
obs.observe({entryTypes: []});
}, "Empty sequence entryTypes does not throw an exception.");
test(function () {
const obs = new PerformanceObserver(() => {});
obs.observe({entryTypes: ["this-cannot-match-an-entryType"]});
obs.observe({entryTypes: ["marks","navigate", "resources"]});
}, "Unknown entryTypes do not throw an exception.");
test(function () {
const obs = new PerformanceObserver(() => {});
obs.observe({entryTypes: ["mark","this-cannot-match-an-entryType"]});
obs.observe({entryTypes: ["this-cannot-match-an-entryType","mark"]});
obs.observe({entryTypes: ["mark"], others: true});
}, "Filter unsupported entryType entryType names within the entryTypes sequence");
async_test(function (t) {
var finish = t.step_func(function () { t.done(); });
var observer = new PerformanceObserver(
function (entryList, obs) {
var self = this;
t.step(function () {
assert_true(entryList instanceof PerformanceObserverEntryList, "first callback parameter must be a PerformanceObserverEntryList instance");
assert_true(obs instanceof PerformanceObserver, "second callback parameter must be a PerformanceObserver instance");
assert_equals(observer, self, "observer is the this value");
assert_equals(observer, obs, "observer is second parameter");
assert_equals(self, obs, "this and second parameter are the same");
observer.disconnect();
finish();
});
}
);
self.performance.clearMarks();
observer.observe({entryTypes: ["mark"]});
self.performance.mark("mark1");
}, "Check observer callback parameter and this values");
async_test(function (t) {
var observer = new PerformanceObserver(
t.step_func(function (entryList, obs) {
checkEntries(entryList.getEntries(),
[{ entryType: "measure", name: "measure1"}]);
observer.disconnect();
t.done();
})
);
self.performance.clearMarks();
observer.observe({entryTypes: ["mark"]});
observer.observe({entryTypes: ["measure"]});
self.performance.mark("mark1");
self.performance.measure("measure1");
}, "replace observer if already present");
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