index.tests.js
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	/* eslint-disable camelcase */
	( function () {
	'use strict';

	var realAjax = $.ajax,
	realGeoIP = mw.geoIP,
	realBucketCookie = $.cookie( 'CN' ),
	realHideCookie = $.cookie( 'centralnotice_hide_fundraising' ),
	realSendBeacon = navigator.sendBeacon,
	realshouldHide = mw.centralNotice.internal.hide.shouldHide,
	bannerData = {
	bannerName: 'test_banner',
	campaign: 'test_campaign',
	category: 'test',
	bannerHtml: '<div id="test_banner"></div>'
	},
	nowSec = Date.now() / 1000,
	choiceData2Campaigns = [
	{
	name: 'campaign1',
	preferred: 1,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner1',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: {}
	},
	{
	name: 'campaign2',
	preferred: 1,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner2',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: {}
	}
	],
	choiceData1Campaign2Banners = [
	{
	name: 'campaign1',
	preferred: 1,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner1',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	},
	{
	name: 'banner2',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: { testMixin: [ 'arg1', 'arg2' ] }
	}
	],
	choiceData1Campaign2Banners2Buckets = [
	{
	name: 'campaign1',
	preferred: 1,
	throttle: 100,
	bucket_count: 2,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner1',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'mobile' ],
	display_anon: false,
	display_account: false
	},
	{
	name: 'banner2',
	weight: 25,
	bucket: 1,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: { testMixin: [ 'arg1', 'arg2' ] }
	}
	],
	choiceDataCampaignsStaleness = [
	{
	name: 'campaign1_stale',
	preferred: 2,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - ( 60000 * ( 15 * 60000 ) ), // with leeway
	end: nowSec - ( 600 * ( 15 * 60000 ) ), // with leeway
	banners: [
	{
	name: 'banner1',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: {}
	}
	],
	choiceDataCampaignsFallbackMixin = [
	{
	name: 'campaign1_mixin',
	preferred: 2,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner1',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: {
	testMixin: [ 'arg1', 'arg2' ]
	}
	},
	{
	name: 'campaign2',
	preferred: 1,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner2',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: {}
	}
	],
	choiceDataCampaignsFallbackHidden = [
	{
	name: 'campaign1',
	preferred: 2,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner1',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: {}
	},
	{
	name: 'campaign2',
	preferred: 1,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner2',
	weight: 25,
	bucket: 0,
	category: 'something',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: {}
	}
	],
	choiceDataAllCampaignsFail = [
	{
	name: 'campaign1',
	preferred: 1,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner1',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: { testMixin: [] }
	},
	{
	name: 'campaign2',
	preferred: 1,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner2',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: { testMixin: [] }
	}
	],
	choiceDataAllCampaignsImpressionRates = [
	{
	name: 'campaign1',
	preferred: 2,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner1',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: { testMixinRates: [ 0.75 ] }
	},
	{
	name: 'campaign2',
	preferred: 1,
	throttle: 100,
	bucket_count: 1,
	geotargeted: false,
	start: nowSec - 1,
	end: nowSec + 600,
	banners: [
	{
	name: 'banner2',
	weight: 25,
	bucket: 0,
	category: 'fundraising',
	devices: [ 'desktop' ],
	display_anon: true,
	display_account: true
	}
	],
	mixins: { testMixinRates: [ 0.5 ] }
	}
	];

	QUnit.module( 'ext.centralNotice.display', QUnit.newMwEnvironment( {
	beforeEach: function () {

	$( '#siteNotice' ).remove();

	$.removeCookie( 'centralnotice_hide_fundraising', { path: '/' } );
	$.removeCookie( 'CN', { path: '/' } );

	// Suppress background calls
	$.ajax = function () {
	return $.Deferred();
	};

	// Create normalized siteNotice.
	$( '#qunit-fixture' ).append(
	'<div id=siteNotice><div id=centralNotice></div></div>'
	);

	// Mock mw.geoIP
	mw.geoIP = {
	getPromise: function () {
	var deferred = $.Deferred();
	// Resolve with minimal valid geo object
	deferred.resolve( { country: 'AQ' } );
	return deferred.promise();
	}
	};

	// Reset record impression deferred object and array of promises for delaying
	// record impression call
	mw.centralNotice.recordImpressionDeferredObj = null;
	mw.centralNotice.recordImpressionDelayPromises = [];
	},
	afterEach: function () {
	$.ajax = realAjax;
	mw.geoIP = realGeoIP;
	navigator.sendBeacon = realSendBeacon;
	$.cookie( 'centralnotice_hide_fundraising', realHideCookie, { path: '/' } );
	$.cookie( 'CN', realBucketCookie, { path: '/' } );
	mw.centralNotice.internal.state.data = {};
	mw.centralNotice.internal.state.campaign = null;
	mw.centralNotice.internal.state.banner = null;
	mw.centralNotice.internal.state.urlParams.recordImpressionSampleRate = null;
	mw.centralNotice.internal.state.urlParams.impressionEventSampleRate = null;
	mw.centralNotice.internal.state.attemptedCampaignsByName = {};
	mw.centralNotice.internal.hide.shouldHide = realshouldHide;
	}
	} ) );

	QUnit.test( 'canInsertBanner', function ( assert ) {
	mw.centralNotice.choiceData = choiceData2Campaigns;
	mw.centralNotice.chooseAndMaybeDisplay();

	// We call reallyInsertBanner() instead of insertBanner() to avoid
	// the async DOM-waiting of the latter.
	mw.centralNotice.reallyInsertBanner( bannerData );

	assert.strictEqual( $( 'div#test_banner' ).length, 1 );
	} );

	/**
	* Create the required state in CN for the record impression call to occur. The first
	* campaign in choiceData2Campaigns will be chosen.
	*
	* @param campaignsData
	*/
	function mockChoiceDataForRecordImpressionCall( campaignsData ) {

	// Request 100% sample rate for record impression
	mw.centralNotice.internal.state.urlParams.recordImpressionSampleRate = 1;

	mw.centralNotice.choiceData = campaignsData;
	// Set `randomcampaign` to force the same choice each time, for tests where more
	// than one campaign may be available
	mw.centralNotice.internal.state.urlParams.randomcampaign = 0.25;
	mw.centralNotice.chooseAndMaybeDisplay();
	}

	QUnit.test( 'call record impression', function ( assert ) {

	// Mock navigator.sendBeacon to capture calls and check data points sent
	navigator.sendBeacon = function ( urlString ) {

	// mediawiki.Uri is already a dependency of ext.centralNotice.display
	var url = new mw.Uri( urlString );
	assert.strictEqual( url.query.campaign, 'campaign1', 'record impression campaign' );
	assert.strictEqual( url.query.banner, 'banner1', 'record impression banner' );
	};

	mockChoiceDataForRecordImpressionCall( choiceData2Campaigns );

	// Call reallyInsertBanner() instead of insertBanner() to avoid the async
	// DOM-waiting of the latter. This triggers the call to record impression.
	mw.centralNotice.reallyInsertBanner( bannerData );
	} );

	QUnit.test( 'delay record impression call and register tests', function ( assert ) {
	var deferred = $.Deferred(),
	recordImpresionPromise,
	signalTestDone = assert.async();

	// Mock navigator.sendBeacon to check record impression doesn't fire early
	navigator.sendBeacon = function () {
	// If we get here, it's a failure
	assert.true( false, 'record impression waits, as requested' );
	};

	mockChoiceDataForRecordImpressionCall( choiceData2Campaigns );

	// Request a delay and capture the promise that should run right before the
	// record impression call
	recordImpresionPromise =
	mw.centralNotice.requestRecordImpressionDelay( deferred.promise() );

	recordImpresionPromise.done( function () {
	mw.centralNotice.registerTest( 'test_test' );
	} );

	// Call reallyInsertBanner() instead of insertBanner() to avoid the async
	// DOM-waiting of the latter. This doesn't trigger the call to record impression
	// yet because we requested a delay.
	mw.centralNotice.reallyInsertBanner( bannerData );

	// Mock navigator.sendBeacon to capture calls and check data points sent
	navigator.sendBeacon = function ( urlString ) {
	var url = new mw.Uri( urlString );
	assert.strictEqual( url.query.campaign, 'campaign1', 'record impression campaign' );
	assert.strictEqual( url.query.banner, 'banner1', 'record impression banner' );

	assert.strictEqual(
	url.query.testIdentifiers,
	'test_test',
	'record impression test identifier'
	);

	signalTestDone();
	};

	// Resolve the promise to let the record impression call go ahead
	deferred.resolve();
	} );

	QUnit.skip( 'record impression timeout and register tests', function ( assert ) {
	var recordImpresionPromise,
	start = Date.now(),
	MAX_RECORD_IMPRESSION_DELAY = 250, // Coordinate with ext.centralnotice.display.js
	signalTestDone = assert.async();

	mockChoiceDataForRecordImpressionCall( choiceData2Campaigns );

	// Request a delay and capture the promise that should run right before the
	// record impression call
	recordImpresionPromise =
	mw.centralNotice.requestRecordImpressionDelay( $.Deferred().promise() );

	recordImpresionPromise.done( function () {
	mw.centralNotice.registerTest( 'test_timeouted_test' );
	} );

	// Mock navigator.sendBeacon to capture calls and check time and data points sent
	navigator.sendBeacon = function ( urlString ) {
	var url = new mw.Uri( urlString ),
	delay = Date.now() - start;

	assert.strictEqual( url.query.campaign, 'campaign1', 'record impression campaign' );
	assert.strictEqual( url.query.banner, 'banner1', 'record impression banner' );

	// 50 ms leewway is bit arbitrary
	assert.true(
	( delay > MAX_RECORD_IMPRESSION_DELAY - 50 ) &&
	( delay < MAX_RECORD_IMPRESSION_DELAY + 50 ),
	'record impression called by timeout'
	);

	assert.strictEqual(
	url.query.testIdentifiers,
	'test_timeouted_test',
	'record impression test identifier'
	);

	signalTestDone();
	};

	// Call reallyInsertBanner() instead of insertBanner() to avoid the async
	// DOM-waiting of the latter. This starts the record impression timeout.
	mw.centralNotice.reallyInsertBanner( bannerData );

	// We don't resolve the promise to delay record impression. The call should
	// be made by MAX_RECORD_IMPRESSION_DELAY milliseconds (give or take a bit).
	} );

	QUnit.skip( 'record impression called only once', function ( assert ) {
	var deferred = $.Deferred(),
	MAX_RECORD_IMPRESSION_DELAY = 250, // Coordinate with ext.centralnotice.display.js
	recordImpresionPromise,
	signalTestDone = assert.async();

	mockChoiceDataForRecordImpressionCall( choiceData2Campaigns );

	// Request a delay and capture the promise that should run right before the
	// record impression call
	recordImpresionPromise =
	mw.centralNotice.requestRecordImpressionDelay( deferred.promise() );

	// Mock navigator.sendBeacon to capture calls
	navigator.sendBeacon = function () {
	assert.true( true, 'record impression called once' );

	// Re-mock to fail test if called again
	navigator.sendBeacon = function () {
	assert.true( false, 'record impression not called twice' );
	};
	};

	// Call reallyInsertBanner() instead of insertBanner() to avoid the async
	// DOM-waiting of the latter. This starts the record impression timeout.
	mw.centralNotice.reallyInsertBanner( bannerData );

	// Set another timeout to resolve the promise requesting a delay after the timeout
	// to call record impression has run. By starting this timeout after the record
	// impression timeout (above) and making it a bit longer, we ensure it runs second.
	setTimeout( function () {
	assert.strictEqual(
	recordImpresionPromise.state(),
	'resolved',
	'record impression call was from timeout'
	);

	// Resolve the promise that delays the call only up until the timeout, to
	// test that record impression isn't called a second time.
	deferred.resolve();
	}, MAX_RECORD_IMPRESSION_DELAY + 1 );

	setTimeout( function () {
	signalTestDone();
	}, MAX_RECORD_IMPRESSION_DELAY + 2 );
	} );

	QUnit.test( 'banner= override param', function ( assert ) {
	mw.centralNotice.internal.state.urlParams.banner = 'test_banner';
	$.ajax = function ( params ) {
	assert.true( /Special(?:[:]\|%3A)BannerLoader.*[?&]banner=test_banner/.test( params.url ) );
	return $.Deferred();
	};
	mw.centralNotice.displayTestingBanner();

	assert.true( mw.centralNotice.data.testingBanner );
	} );

	QUnit.test( 'randomcampaign= override param', function ( assert ) {
	mw.centralNotice.choiceData = choiceData2Campaigns;

	// Get the first campaign
	mw.centralNotice.internal.state.urlParams.randomcampaign = 0.25;

	$.ajax = function ( params ) {
	assert.true( /Special(?:[:]\|%3A)BannerLoader.*[?&]banner=banner1/.test( params.url ) );
	return $.Deferred();
	};
	mw.centralNotice.chooseAndMaybeDisplay();

	// Get the second campaign
	mw.centralNotice.internal.state.urlParams.randomcampaign = 0.75;

	$.ajax = function ( params ) {
	assert.true( /Special(?:[:]\|%3A)BannerLoader.*[?&]banner=banner2/.test( params.url ) );
	return $.Deferred();
	};
	mw.centralNotice.chooseAndMaybeDisplay();
	} );

	QUnit.test( 'randombanner= override param', function ( assert ) {
	mw.centralNotice.choiceData = choiceData1Campaign2Banners;

	// Get the first banner
	mw.centralNotice.internal.state.urlParams.randombanner = 0.25;

	$.ajax = function ( params ) {
	assert.true( /Special(?:[:]\|%3A)BannerLoader.*[?&]banner=banner1/.test( params.url ) );
	return $.Deferred();
	};
	mw.centralNotice.chooseAndMaybeDisplay();

	// Get the second banner
	mw.centralNotice.internal.state.urlParams.randombanner = 0.75;

	$.ajax = function ( params ) {
	assert.true( /Special(?:[:]\|%3A)BannerLoader.*[?&]banner=banner2/.test( params.url ) );
	return $.Deferred();
	};
	mw.centralNotice.chooseAndMaybeDisplay();
	} );

	QUnit.test( 'runs hooks on banner shown', function ( assert ) {
	var mixin = new mw.centralNotice.Mixin( 'testMixin' );

	$.ajax = function () {
	mw.centralNotice.reallyInsertBanner( bannerData );
	return $.Deferred();
	};

	mixin.setPreBannerHandler(
	function ( params ) {
	assert.deepEqual( params, choiceData1Campaign2Banners[ 0 ].mixins.testMixin );
	}
	);
	mixin.setPostBannerOrFailHandler(
	function ( params ) {
	assert.deepEqual( params, choiceData1Campaign2Banners[ 0 ].mixins.testMixin );
	}
	);

	mw.centralNotice.registerCampaignMixin( mixin );
	mw.centralNotice.choiceData = choiceData1Campaign2Banners;
	mw.centralNotice.chooseAndMaybeDisplay();

	assert.strictEqual(
	mw.centralNotice.data.status,
	mw.centralNotice.internal.state.STATUSES.BANNER_SHOWN.key
	);
	} );

	QUnit.test( 'runs hooks on banner canceled', function ( assert ) {
	var mixin = new mw.centralNotice.Mixin( 'testMixin' );

	mixin.setPreBannerHandler(
	function ( params ) {
	assert.deepEqual( params, choiceData1Campaign2Banners[ 0 ].mixins.testMixin );
	mw.centralNotice.failCampaign( 'testReason' );
	}
	);
	mixin.setPostBannerOrFailHandler(
	function ( params ) {
	assert.deepEqual( params, choiceData1Campaign2Banners[ 0 ].mixins.testMixin );
	}
	);

	mw.centralNotice.registerCampaignMixin( mixin );
	mw.centralNotice.choiceData = choiceData1Campaign2Banners;
	mw.centralNotice.chooseAndMaybeDisplay();

	assert.strictEqual(
	mw.centralNotice.data.status,
	mw.centralNotice.internal.state.STATUSES.BANNER_CANCELED.key
	);
	assert.strictEqual( mw.centralNotice.data.bannerCanceledReason, 'testReason' );
	assert.true( mw.centralNotice.internal.state.isCampaignFailed() );
	} );

	QUnit.test( 'runs hooks on no banner available', function ( assert ) {
	var mixin = new mw.centralNotice.Mixin( 'testMixin' );

	mixin.setPreBannerHandler(
	function ( params ) {
	assert.deepEqual(
	params,
	choiceData1Campaign2Banners2Buckets[ 0 ].mixins.testMixin
	);
	}
	);
	mixin.setPostBannerOrFailHandler(
	function ( params ) {
	assert.deepEqual(
	params,
	choiceData1Campaign2Banners2Buckets[ 0 ].mixins.testMixin
	);
	}
	);

	mw.centralNotice.registerCampaignMixin( mixin );
	mw.centralNotice.choiceData = choiceData1Campaign2Banners2Buckets;
	mw.centralNotice.internal.bucketer.setCampaign( choiceData1Campaign2Banners2Buckets[ 0 ] );
	mw.centralNotice.internal.bucketer.process();
	mw.centralNotice.internal.bucketer.setBucket( 0 );

	mw.centralNotice.chooseAndMaybeDisplay();

	assert.strictEqual(
	mw.centralNotice.data.status,
	mw.centralNotice.internal.state.STATUSES.NO_BANNER_AVAILABLE.key
	);
	} );

	QUnit.test( 'short-circuit when there is a stale campaign in choices', function ( assert ) {
	mw.centralNotice.choiceData = choiceDataCampaignsStaleness;

	mw.centralNotice.chooseAndMaybeDisplay();

	assert.strictEqual(
	mw.centralNotice.internal.state.data.status,
	mw.centralNotice.internal.state.STATUSES.CHOICE_DATA_STALE.key,
	'choice data is stale'
	);
	} );

	QUnit.test( 'fallback when preferred campaign is filtered out by a mixin', function ( assert ) {
	var mixin = new mw.centralNotice.Mixin( 'testMixin' );

	mixin.setPreBannerHandler(
	function () {
	mw.centralNotice.failCampaign( 'testReason' );
	}
	);

	mw.centralNotice.registerCampaignMixin( mixin );
	mw.centralNotice.choiceData = choiceDataCampaignsFallbackMixin;
	mw.centralNotice.chooseAndMaybeDisplay();

	assert.strictEqual(
	mw.centralNotice.internal.state.data.status,
	mw.centralNotice.internal.state.STATUSES.BANNER_CHOSEN.key,
	'banner is chosen'
	);

	assert.strictEqual(
	mw.centralNotice.internal.state.data.banner,
	'banner2'
	);

	assert.strictEqual(
	mw.centralNotice.internal.state.campaign.name,
	'campaign2',
	'campaign is chosen correctly'
	);
	} );

	QUnit.test( 'fallback when preferred campaign banner is hidden', function ( assert ) {
	var i = 0;

	mw.centralNotice.internal.hide.shouldHide = function () {
	i++;
	// Ensure only the first campaign from the list will hit hide.shouldHide()
	return i === 1;
	};

	mw.centralNotice.choiceData = choiceDataCampaignsFallbackHidden;

	mw.centralNotice.chooseAndMaybeDisplay();

	assert.strictEqual(
	mw.centralNotice.internal.state.data.status,
	mw.centralNotice.internal.state.STATUSES.BANNER_CHOSEN.key,
	'banner is chosen'
	);

	assert.strictEqual(
	mw.centralNotice.internal.state.data.banner,
	'banner2'
	);

	assert.strictEqual(
	mw.centralNotice.internal.state.campaign.name,
	'campaign2',
	'campaign is chosen correctly'
	);
	} );

	QUnit.test( 'record impression is being called when all campaigns fail', function ( assert ) {
	var mixin = new mw.centralNotice.Mixin( 'testMixin' );

	this.sandbox.stub( navigator, 'sendBeacon', function () {
	assert.step( 'beacon' );
	} );

	// Make every campaign fail by cancelling banners
	mixin.setPreBannerHandler(
	function () {
	mw.centralNotice.failCampaign( 'testReason' );
	}
	);

	mw.centralNotice.registerCampaignMixin( mixin );

	mockChoiceDataForRecordImpressionCall( choiceDataAllCampaignsFail );

	// Expect sendBeacon to be called once
	assert.verifySteps( [ 'beacon' ] );

	} );

	QUnit.test( 'impression sample rate is kept as highest value', function ( assert ) {

	var mixin = new mw.centralNotice.Mixin( 'testMixinRates' );

	// Set new sample rates via mixin
	mixin.setPreBannerHandler(
	function ( mixinParams ) {
	mw.centralNotice.setMinRecordImpressionSampleRate( mixinParams[ 0 ] );
	// Fail campaign by cancelling a banner
	mw.centralNotice.failCampaign( 'testReason' );
	}
	);

	mw.centralNotice.registerCampaignMixin( mixin );

	mw.centralNotice.choiceData = choiceDataAllCampaignsImpressionRates;
	mw.centralNotice.chooseAndMaybeDisplay();

	assert.strictEqual(
	mw.centralNotice.internal.state.getData().recordImpressionSampleRate,
	0.75
	);

	} );

	QUnit.test( 'event sample rate is kept as highest value', function ( assert ) {

	var mixin = new mw.centralNotice.Mixin( 'testMixinRates' );

	// Set new sample rates via mixin
	mixin.setPreBannerHandler(
	function ( mixinParams ) {
	mw.centralNotice.setMinImpressionEventSampleRate( mixinParams[ 0 ] );
	// Fail campaign by cancelling a banner
	mw.centralNotice.failCampaign( 'testReason' );
	}
	);

	mw.centralNotice.registerCampaignMixin( mixin );

	mw.centralNotice.choiceData = choiceDataAllCampaignsImpressionRates;
	mw.centralNotice.chooseAndMaybeDisplay();

	assert.strictEqual(
	mw.centralNotice.internal.state.getData().impressionEventSampleRate,
	0.75
	);

	} );

	QUnit.test( 'event sample rate is being correctly overridden from url', function ( assert ) {

	var mixin = new mw.centralNotice.Mixin( 'testMixinRates' );

	// Override rate via URL param
	mw.centralNotice.internal.state.urlParams.impressionEventSampleRate = 1;

	// Set new sample rates via mixin
	mixin.setPreBannerHandler(
	function ( mixinParams ) {
	mw.centralNotice.setMinImpressionEventSampleRate( mixinParams[ 0 ] );
	// Fail campaign by cancelling a banner
	mw.centralNotice.failCampaign( 'testReason' );
	}
	);

	mw.centralNotice.registerCampaignMixin( mixin );

	mw.centralNotice.choiceData = choiceDataAllCampaignsImpressionRates;
	mw.centralNotice.chooseAndMaybeDisplay();

	assert.strictEqual(
	mw.centralNotice.internal.state.getData().impressionEventSampleRate,
	1
	);

	} );

	QUnit.test( 'campaign statuses are tracked as serialized JSON string', function ( assert ) {

	var mixin = new mw.centralNotice.Mixin( 'testMixin' );

	// Make every campaign fail by cancelling banners
	mixin.setPreBannerHandler(
	function () {
	mw.centralNotice.failCampaign( 'testReason' );
	}
	);

	// Mock navigator.sendBeacon
	navigator.sendBeacon = function ( urlString ) {
	var url = new mw.Uri( urlString ),
	statuses = JSON.parse( url.query.campaignStatuses );
	assert.strictEqual( statuses.length, 2, 'correct amount of records' );
	};

	mw.centralNotice.registerCampaignMixin( mixin );

	mockChoiceDataForRecordImpressionCall( choiceDataAllCampaignsFail );

	} );

	}() );

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