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Clear old cookies to be based on consent

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We have been clearing all the Google Analytics
cookies on each page request.

It is now possible for a user to consent to having
Google Analytics cookies so this should have been
checking for that before deleting them.

This makes that change, with tests for those
scenarios.
This commit is contained in:
Tom Byers
2020-01-21 09:37:38 +00:00
parent 98e48e68f9
commit 174c10c7ff
5 changed files with 61 additions and 24 deletions
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42
tests/javascripts/cookieMessage.test.js
View File

@@ -98,17 +98,43 @@ describe("Cookie message", () => {
This works through CSS, based on the presence of the `js-enabled` class on the <body> so is not tested here.
*/
test("If the cookies set by the old banner still exist, they can be cleared with the `clearOldCookies` method", () => {
describe("The `clearOldCookies` method", () => {
helpers.setCookie('seen_cookie_message', 'true', { 'days': 365 });
helpers.setCookie('_ga', 'GA1.1.123.123', { 'days': 365 });
helpers.setCookie('_gid', 'GA1.1.456.456', { 'days': 1 });
test("Will clear the seen_cookie_message cookie if it still exists", () => {
window.GOVUK.Modules.CookieBanner.clearOldCookies();
// seen_cookie_message was set on the www domain, which setCookie defaults to
helpers.setCookie('seen_cookie_message', 'true', { 'days': 365 });
expect(window.GOVUK.cookie('seen_cookie_message')).toBeNull();
expect(window.GOVUK.cookie('_ga')).toBeNull();
expect(window.GOVUK.cookie('_gid')).toBeNull();
window.GOVUK.Modules.CookieBanner.clearOldCookies({ "analytics": false });
expect(window.GOVUK.cookie('seen_cookie_message')).toBeNull();
});
test("Will clear any existing Google Analytics cookies if consent is not set", () => {
// GA cookies are set on the root domain
helpers.setCookie('_ga', 'GA1.1.123.123', { 'days': 365, 'domain': '.notifications.service.gov.uk' });
helpers.setCookie('_gid', 'GA1.1.456.456', { 'days': 1, 'domain': '.notifications.service.gov.uk' });
window.GOVUK.Modules.CookieBanner.clearOldCookies(null);
expect(window.GOVUK.cookie('_ga')).toBeNull();
expect(window.GOVUK.cookie('_gid')).toBeNull();
});
test("Will leave any existing Google Analytics cookies if consent is set", () => {
helpers.setCookie('_ga', 'GA1.1.123.123', { 'days': 365 });
helpers.setCookie('_gid', 'GA1.1.456.456', { 'days': 1 });
window.GOVUK.Modules.CookieBanner.clearOldCookies({ "analytics": true });
expect(window.GOVUK.cookie('_ga')).not.toBeNull();
expect(window.GOVUK.cookie('_gid')).not.toBeNull();
});
});

13
tests/javascripts/support/helpers/cookies.js
View File

@@ -1,15 +1,18 @@
// Helper for deleting a cookie
function deleteCookie (cookieName) {
document.cookie = cookieName + '=; path=/; expires=' + (new Date());
function deleteCookie (cookieName, options) {
if (typeof options === 'undefined') {
options = {};
}
if (!options.domain) { options.domain = window.location.hostname; }
document.cookie = cookieName + '=; path=/; domain=' + options.domain + '; expires=' + (new Date());
};
function setCookie (name, value, options) {
if (typeof options === 'undefined') {
options = {};
}
var cookieString = name + '=' + value + '; path=/;domain=' + window.location.hostname;
if (!options.domain) { options.domain = window.location.hostname; }
var cookieString = name + '=' + value + '; path=/; domain=' + options.domain;
if (options.days) {
var date = new Date();
date.setTime(date.getTime() + (options.days * 24 * 60 * 60 * 1000));