po-disconnect-removes-observed-types.any.js

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This WPT test may be referenced by the following Test IDs:
- /performance-timeline/po-disconnect-removes-observed-types.any.html - WPT Dashboard Interop Dashboard
- /performance-timeline/po-disconnect-removes-observed-types.any.worker.html - WPT Dashboard Interop Dashboard

// META: script=performanceobservers.js

async_test(function (t) {

  const observer  = new PerformanceObserver(

      t.step_func(function (entryList) {

        // There should be no mark entry.

        checkEntries(entryList.getEntries(),

          [{ entryType: "measure", name: "b"}]);

        t.done();

})

);

  observer.observe({type: "mark"});

  // Disconnect the observer.

  observer.disconnect();

  // Now, only observe measure.

  observer.observe({type: "measure"});

  performance.mark("a");

  performance.measure("b");

}, "Types observed are forgotten when disconnect() is called.");