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<!DOCTYPE HTML> <html> <head> <title>Test for BroadcastChannel.postMessage invalid State</title> <script src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <div id="content"></div> <script type="application/javascript"> let c1 = new BroadcastChannel("order"); let c2 = new BroadcastChannel("order"); let c3 = new BroadcastChannel("order"); let events = []; let doneCount = 0; function whichBC(bc) { if (bc == c1) return "c1"; if (bc == c2) return "c2"; if (bc == c3) return "c3"; return "What?!?"; } function handler(e) { events.push(e); if (e.data == "done") { doneCount++; if (doneCount == 2) { is(events.length, 6, "Correct length"); is(whichBC(events[0].target), "c2", "target for event 0"); is(events[0].data, "from c1"); is(whichBC(events[1].target), "c3", "target for event 1"); is(events[1].data, "from c1"); is(whichBC(events[2].target), "c1", "target for event 2"); is(events[2].data, "from c3"); is(whichBC(events[3].target), "c2", "target for event 3"); is(events[3].data, "from c3"); is(whichBC(events[4].target), "c1", "target for event 4"); is(events[4].data, "done"); is(whichBC(events[5].target), "c3", "target for event 5"); is(events[5].data, "done"); SimpleTest.finish(); } } } c1.onmessage = handler; c2.onmessage = handler; c3.onmessage = handler; c1.postMessage("from c1"); c3.postMessage("from c3"); c2.postMessage("done"); SimpleTest.waitForExplicitFinish(); </script> </body> </html>
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2026-04-04