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<!doctype html>
<title>RTCConfiguration iceTransportPolicy</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="RTCConfiguration-helper.js"></script>
<script>
  'use strict';

  // Test is based on the following editor draft:
  // https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.html

  // The following helper function is called from RTCConfiguration-helper.js:
  //   config_test

  /*
    [Constructor(optional RTCConfiguration configuration)]
    interface RTCPeerConnection : EventTarget {
      RTCConfiguration                   getConfiguration();
      void                               setConfiguration(RTCConfiguration configuration);
      ...
    };

    dictionary RTCConfiguration {
      sequence<RTCIceServer>   iceServers;
      RTCIceTransportPolicy    iceTransportPolicy = "all";
    };

    enum RTCIceTransportPolicy {
      "relay",
      "all"
    };
   */

  test(() => {
    const pc = new RTCPeerConnection();
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
  }, `new RTCPeerConnection() should have default iceTransportPolicy all`);

  test(() => {
    const pc = new RTCPeerConnection({ iceTransportPolicy: undefined });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
  }, `new RTCPeerConnection({ iceTransportPolicy: undefined }) should have default iceTransportPolicy all`);

  test(() => {
    const pc = new RTCPeerConnection({ iceTransportPolicy: 'all' });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
  }, `new RTCPeerConnection({ iceTransportPolicy: 'all' }) should succeed`);

  test(() => {
    const pc = new RTCPeerConnection({ iceTransportPolicy: 'relay' });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'relay');
  }, `new RTCPeerConnection({ iceTransportPolicy: 'relay' }) should succeed`);

  /*
    4.3.2. Set a configuration
      8.  Set the ICE Agent's ICE transports setting to the value of
          configuration.iceTransportPolicy. As defined in [JSEP] (section 4.1.16.),
          if the new ICE transports setting changes the existing setting, no action
          will be taken until the next gathering phase. If a script wants this to
          happen immediately, it should do an ICE restart.
   */
  test(() => {
    const pc = new RTCPeerConnection({ iceTransportPolicy: 'all' });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');

    pc.setConfiguration({ iceTransportPolicy: 'relay' });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'relay');
  }, `setConfiguration({ iceTransportPolicy: 'relay' }) with initial iceTransportPolicy all should succeed`);

  test(() => {
    const pc = new RTCPeerConnection({ iceTransportPolicy: 'relay' });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'relay');

    pc.setConfiguration({ iceTransportPolicy: 'all' });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
  }, `setConfiguration({ iceTransportPolicy: 'all' }) with initial iceTransportPolicy relay should succeed`);

  test(() => {
    const pc = new RTCPeerConnection({ iceTransportPolicy: 'relay' });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'relay');

    // default value for iceTransportPolicy is all
    pc.setConfiguration({});
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
  }, `setConfiguration({}) with initial iceTransportPolicy relay should set new value to all`);

  config_test(makePc => {
    assert_throws_js(TypeError, () =>
      makePc({ iceTransportPolicy: 'invalid' }));
  }, `with invalid iceTransportPolicy should throw TypeError`);

  // "none" is in Blink and Gecko's IDL, but not in the spec.
  config_test(makePc => {
    assert_throws_js(TypeError, () =>
      makePc({ iceTransportPolicy: 'none' }));
  }, `with none iceTransportPolicy should throw TypeError`);

  config_test(makePc => {
    assert_throws_js(TypeError, () =>
      makePc({ iceTransportPolicy: null }));
  }, `with null iceTransportPolicy should throw TypeError`);

  // iceTransportPolicy is called iceTransports in Blink.
  test(() => {
    const pc = new RTCPeerConnection({ iceTransports: 'relay' });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
  }, `new RTCPeerConnection({ iceTransports: 'relay' }) should have no effect`);

  test(() => {
    const pc = new RTCPeerConnection({ iceTransports: 'invalid' });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
  }, `new RTCPeerConnection({ iceTransports: 'invalid' }) should have no effect`);

  test(() => {
    const pc = new RTCPeerConnection({ iceTransports: null });
    assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
  }, `new RTCPeerConnection({ iceTransports: null }) should have no effect`);

</script>