test_wallpaper_protocol.js

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"use strict";

// Need profile so that the protocol handler can resolve the path to the underlying file

do_get_profile();

function run_test() {

  // Check the protocol handler implements the correct interfaces

  let handler = Services.io.getProtocolHandler("moz-newtab-wallpaper");

ok(

    handler instanceof Ci.nsIProtocolHandler,

    "moz-newtab-wallpaper handler provides nsIProtocolHandler interface"

);

ok(

    handler instanceof Ci.nsISubstitutingProtocolHandler,

    "moz-newtab-wallpaper handler provides nsISubstitutingProtocolHandler interface"

);

  // Create a dummy loadinfo which we can hand to newChannel

  let dummyURI = Services.io.newURI("https://www.example.com/");

  let dummyChannel = NetUtil.newChannel({

    uri: dummyURI,

    loadUsingSystemPrincipal: true,

});

  let dummyLoadInfo = dummyChannel.loadInfo;

  // Test that empty host fails

  let emptyHost = Services.io.newURI("moz-newtab-wallpaper://");

  Assert.throws(

    () => handler.newChannel(emptyHost, dummyLoadInfo),

    /NS_ERROR/i,

    "moz-newtab-wallpaper URI with empty host must not resolve"

);

  // Test that valid host creates a channel (even if file doesn't exist yet)

  let validURI = Services.io.newURI("moz-newtab-wallpaper://wallpaper.jpg");

  let channel = handler.newChannel(validURI, dummyLoadInfo);

  ok(channel, "moz-newtab-wallpaper URI with valid host creates a channel");