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<!doctype html>
<meta charset=utf-8>
<title>RTCRtpTransceiver.prototype.stop</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="RTCPeerConnection-helper.js"></script>
<script>
// FIXME: Add a test adding a transceiver, stopping it and trying to create an empty offer.

promise_test(async (t)=> {
    const pc1 = new RTCPeerConnection();
    t.add_cleanup(() => pc1.close());

    pc1.addTransceiver("audio", { direction: "sendonly" });
    pc1.addTransceiver("video");
    pc1.getTransceivers()[0].stop();

    const offer = await pc1.createOffer();

    assert_false(offer.sdp.includes("m=audio"), "offer should not contain an audio m-section");
    assert_true(offer.sdp.includes("m=video"), "offer should contain a video m-section");
}, "A transceiver added and stopped before the initial offer generation should not trigger an offer m-section generation");

promise_test(async (t)=> {
    const pc1 = new RTCPeerConnection();
    const pc2 = new RTCPeerConnection();
    t.add_cleanup(() => pc1.close());
    t.add_cleanup(() => pc2.close());

    pc1.addTransceiver("audio");

    await exchangeOfferAnswer(pc1, pc2);

    pc1.addTransceiver("video");

    pc1.getTransceivers()[0].stop();
    pc1.getTransceivers()[1].stop();

    const offer = await pc1.createOffer();

    assert_true(offer.sdp.includes("m=audio"), "offer should contain an audio m-section");
    assert_true(offer.sdp.includes("m=audio 0"), "The audio m-section should be rejected");

    assert_false(offer.sdp.includes("m=video"), "offer should not contain a video m-section");
}, "During renegotiation, adding and stopping a transceiver should not trigger a renegotiated offer m-section generation");

promise_test(async (t)=> {
    const pc1 = new RTCPeerConnection();
    const pc2 = new RTCPeerConnection();
    t.add_cleanup(() => pc1.close());
    t.add_cleanup(() => pc2.close());

    pc1.addTransceiver("audio");

    await exchangeOfferAnswer(pc1, pc2);

    pc1.getTransceivers()[0].direction = "sendonly";
    pc1.getTransceivers()[0].stop();

    const offer = await pc1.createOffer();

    assert_true(offer.sdp.includes("a=inactive"), "The audio m-section should be inactive");
}, "A stopped sendonly transceiver should generate an inactive m-section in the offer");

promise_test(async (t)=> {
    const pc1 = new RTCPeerConnection();
    const pc2 = new RTCPeerConnection();
    t.add_cleanup(() => pc1.close());
    t.add_cleanup(() => pc2.close());

    pc1.addTransceiver("audio");

    await exchangeOfferAnswer(pc1, pc2);

    pc1.getTransceivers()[0].direction = "inactive";
    pc1.getTransceivers()[0].stop();

    const offer = await pc1.createOffer();

    assert_true(offer.sdp.includes("a=inactive"), "The audio m-section should be inactive");
}, "A stopped inactive transceiver should generate an inactive m-section in the offer");
</script>