Ghost/test/unit/frontend/helpers/link.test.js

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const should = require('should');
const concat = require('../../../../core/frontend/helpers/concat');
const link = require('../../../../core/frontend/helpers/link');
const url = require('../../../../core/frontend/helpers/url');
const handlebars = require('../../../../core/frontend/services/theme-engine/engine').handlebars;
const configUtils = require('../../../utils/configUtils');
let defaultGlobals;
function compile(templateString) {
const template = handlebars.compile(templateString);
template.with = (locals = {}, globals) => {
globals = globals || defaultGlobals;
return template(locals, globals);
};
return template;
}
describe('{{link}} helper', function () {
before(function () {
handlebars.registerHelper('link', link);
handlebars.registerHelper('url', url);
handlebars.registerHelper('concat', concat);
configUtils.config.set('url', 'https://siteurl.com');
defaultGlobals = {
data: {
site: {
url: configUtils.config.get('url')
}
}
};
});
after(function () {
configUtils.restore();
});
describe('basic behaviour: simple links without context', function () {
it('throws an error for missing href=""', function () {
(function compileWith() {
compile('{{#link}}text{{/link}}')
.with({});
}).should.throw();
});
it('silently accepts an empty href...', function () {
compile('{{#link href=tag.slug}}text{{/link}}')
.with({tag: null})
.should.eql('<a href="">text</a>');
});
it('<a> tag with a specific URL', function () {
compile('{{#link href="/about/"}}text{{/link}}')
.with({})
.should.eql('<a href="/about/">text</a>');
});
it('<a> tag with an anchor', function () {
compile('{{#link href="#myheading"}}text{{/link}}')
.with({})
.should.eql('<a href="#myheading">text</a>');
});
it('<a> tag with global variable', function () {
compile('{{#link href=@site.url}}text{{/link}}')
.with({})
.should.eql('<a href="https://siteurl.com">text</a>');
});
it('<a> tag with local variable', function () {
compile('{{#link href=tag.slug}}text{{/link}}')
.with({tag: {slug: 'my-tag'}})
.should.eql('<a href="my-tag">text</a>');
});
it('<a> tag with nested helpers', function () {
compile('{{#link href=(url)}}{{title}}{{/link}}')
// Simulate a post - using a draft to prove url helper gets called
// because published posts get their urls from a cache that we don't have access to, so we just get 404
.with({title: 'My Draft Post', slug: 'my-post', html: '<p>My Post</p>', uuid: '1234'})
.should.eql('<a href="/p/1234/">My Draft Post</a>');
});
it('can wrap html content', function () {
compile('{{#link href="/"}}<img src="myfile.jpg" />{{/link}}')
.with({})
.should.eql('<a href="/"><img src="myfile.jpg" /></a>');
});
it('honours class attribute', function () {
compile('{{#link href="#myheading" class="my-class"}}text{{/link}}')
.with({})
.should.eql('<a class="my-class" href="#myheading">text</a>');
});
it('supports multiple classes', function () {
compile('{{#link href="#myheading" class="my-class and-stuff"}}text{{/link}}')
.with({})
.should.eql('<a class="my-class and-stuff" href="#myheading">text</a>');
});
it('can handle classes that come from variables', function () {
compile('{{#link href="#myheading" class=slug}}text{{/link}}')
.with({slug: 'fred'})
.should.eql('<a class="fred" href="#myheading">text</a>');
});
it('can handle classes that come from helpers', function () {
compile('{{#link href="#myheading" class=(concat "my-" slug)}}text{{/link}}')
.with({slug: 'fred'})
.should.eql('<a class="my-fred" href="#myheading">text</a>');
});
it('supports multiple attributes', function () {
compile('{{#link href="#myheading" class="my-class" target="_blank"}}text{{/link}}')
.with({})
.should.eql('<a class="my-class" href="#myheading" target="_blank">text</a>');
});
});
describe('dynamic behaviour: advanced links using context', function () {
describe('activeClass', function () {
it('gets applied correctly', function () {
// Test matching relative URL
compile('{{#link href="/about/"}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="/about/">text</a>');
// Test non-matching relative URL
compile('{{#link href="/about/"}}text{{/link}}')
.with({relativeUrl: '/'})
.should.eql('<a href="/about/">text</a>');
});
it('ignores anchors', function () {
// Anchor in href
compile('{{#link href="/about/#me"}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="/about/#me">text</a>');
// Anchor in relative URL
compile('{{#link href="/about/"}}text{{/link}}')
.with({relativeUrl: '/about/#me'})
.should.eql('<a class="nav-current" href="/about/">text</a>');
});
it('handles missing trailing slashes', function () {
compile('{{#link href="/about"}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="/about">text</a>');
});
it('handles absolute URLs', function () {
// Correct URL gets class
compile('{{#link href="https://siteurl.com/about/"}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="https://siteurl.com/about/">text</a>');
// Incorrect URL doesn't get class
compile('{{#link href="https://othersite.com/about/"}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a href="https://othersite.com/about/">text</a>');
});
it('handles absolute URL with missing trailing slash', function () {
compile('{{#link href="https://siteurl.com/about"}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="https://siteurl.com/about">text</a>');
});
it('activeClass can be customised', function () {
compile('{{#link href="/about/" activeClass="nav-active"}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-active" href="/about/">text</a>');
compile('{{#link href="/about/" activeClass=slug}}text{{/link}}')
.with({relativeUrl: '/about/', slug: 'fred'})
.should.eql('<a class="fred" href="/about/">text</a>');
compile('{{#link href="/about/" activeClass=(concat slug "active" separator="-")}}text{{/link}}')
.with({relativeUrl: '/about/', slug: 'fred'})
.should.eql('<a class="fred-active" href="/about/">text</a>');
});
it('activeClass and other classes work together', function () {
// Single extra class
compile('{{#link href="/about/" class="about"}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="about nav-current" href="/about/">text</a>');
// Multiple extra classes
compile('{{#link href="/about/" class="about my-link"}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="about my-link nav-current" href="/about/">text</a>');
});
it('can disable activeClass with falsey values', function () {
// Empty string
compile('{{#link href="/about/" activeClass=""}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a href="/about/">text</a>');
// false
compile('{{#link href="/about/" activeClass=false}}text{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a href="/about/">text</a>');
});
});
describe('parentActiveClass', function () {
it('gets applied correctly', function () {
// Parent and child links with PARENT as relative URL
compile('{{#link href="/about/"}}parent{{/link}}{{#link href="/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="/about/">parent</a><a href="/about/team/">child</a>');
// Parent and child links with CHILD as relative URL
compile('{{#link href="/about/"}}parent{{/link}}{{#link href="/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="nav-current-parent" href="/about/">parent</a><a class="nav-current" href="/about/team/">child</a>');
});
it('ignores anchors', function () {
// Anchor in href
// Parent and child links with PARENT as relative URL
compile('{{#link href="/about/#me"}}parent{{/link}}{{#link href="/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="/about/#me">parent</a><a href="/about/team/">child</a>');
// Parent and child links with CHILD as relative URL
compile('{{#link href="/about/#me"}}parent{{/link}}{{#link href="/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="nav-current-parent" href="/about/#me">parent</a><a class="nav-current" href="/about/team/">child</a>');
// Anchor in relative URL
// Parent and child links with PARENT as relative URL
compile('{{#link href="/about/"}}parent{{/link}}{{#link href="/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/#me'})
.should.eql('<a class="nav-current" href="/about/">parent</a><a href="/about/team/">child</a>');
// Parent and child links with CHILD as relative URL
compile('{{#link href="/about/"}}parent{{/link}}{{#link href="/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/team/#me'})
.should.eql('<a class="nav-current-parent" href="/about/">parent</a><a class="nav-current" href="/about/team/">child</a>');
});
it('handles missing trailing slashes', function () {
// Parent and child links with PARENT as relative URL
compile('{{#link href="/about"}}parent{{/link}}{{#link href="/about/team"}}child{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="/about">parent</a><a href="/about/team">child</a>');
// Parent and child links with CHILD as relative URL
compile('{{#link href="/about"}}parent{{/link}}{{#link href="/about/team"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="nav-current-parent" href="/about">parent</a><a class="nav-current" href="/about/team">child</a>');
});
it('handles absolute URLs', function () {
// Correct URL gets class
// Parent and child links with PARENT as relative URL
compile('{{#link href="https://siteurl.com/about/"}}parent{{/link}}{{#link href="https://siteurl.com/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="https://siteurl.com/about/">parent</a><a href="https://siteurl.com/about/team/">child</a>');
// Parent and child links with CHILD as relative URL
compile('{{#link href="https://siteurl.com/about/"}}parent{{/link}}{{#link href="https://siteurl.com/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="nav-current-parent" href="https://siteurl.com/about/">parent</a><a class="nav-current" href="https://siteurl.com/about/team/">child</a>');
// Incorrect URL doesn't get class
// Parent and child links with PARENT as relative URL
compile('{{#link href="https://othersite.com/about/"}}parent{{/link}}{{#link href="https://othersite.com/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a href="https://othersite.com/about/">parent</a><a href="https://othersite.com/about/team/">child</a>');
// Parent and child links with CHILD as relative URL
compile('{{#link href="https://othersite.com/about/"}}parent{{/link}}{{#link href="https://othersite.com/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a href="https://othersite.com/about/">parent</a><a href="https://othersite.com/about/team/">child</a>');
});
it('handles absolute URLs with missing trailing slashes', function () {
// Parent and child links with PARENT as relative URL
compile('{{#link href="https://siteurl.com/about"}}parent{{/link}}{{#link href="https://siteurl.com/about/team"}}child{{/link}}')
.with({relativeUrl: '/about/'})
.should.eql('<a class="nav-current" href="https://siteurl.com/about">parent</a><a href="https://siteurl.com/about/team">child</a>');
// Parent and child links with CHILD as relative URL
compile('{{#link href="https://siteurl.com/about"}}parent{{/link}}{{#link href="https://siteurl.com/about/team"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="nav-current-parent" href="https://siteurl.com/about">parent</a><a class="nav-current" href="https://siteurl.com/about/team">child</a>');
});
it('parentActiveClass can be customised', function () {
compile('{{#link href="/about/" parentActiveClass="parent"}}parent{{/link}}{{#link href="/about/team/"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="parent" href="/about/">parent</a><a class="nav-current" href="/about/team/">child</a>');
compile('{{#link href="/about/" parentActiveClass="parent"}}parent{{/link}}{{#link href="/about/team/" parentActiveClass="parent"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="parent" href="/about/">parent</a><a class="nav-current" href="/about/team/">child</a>');
compile('{{#link href="/about/" parentActiveClass=slug}}parent{{/link}}{{#link href="/about/team/" parentActiveClass="parent"}}child{{/link}}')
.with({relativeUrl: '/about/team/', slug: 'fred'})
.should.eql('<a class="fred" href="/about/">parent</a><a class="nav-current" href="/about/team/">child</a>');
compile('{{#link href="/about/" parentActiveClass=(concat slug "-parent")}}parent{{/link}}{{#link href="/about/team/" parentActiveClass="parent"}}child{{/link}}')
.with({relativeUrl: '/about/team/', slug: 'fred'})
.should.eql('<a class="fred-parent" href="/about/">parent</a><a class="nav-current" href="/about/team/">child</a>');
});
it('customising activeClass also customises parentActiveClass', function () {
compile('{{#link href="/about/" activeClass="active"}}parent{{/link}}{{#link href="/about/team/" activeClass="active"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="active-parent" href="/about/">parent</a><a class="active" href="/about/team/">child</a>');
compile('{{#link href="/about/" activeClass="active" parentActiveClass="parent"}}parent{{/link}}{{#link href="/about/team/" activeClass="active"}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="parent" href="/about/">parent</a><a class="active" href="/about/team/">child</a>');
});
it('can disable parentActiveClass with falsey values', function () {
compile('{{#link href="/about/" parentActiveClass=""}}text{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a href="/about/">text</a>');
compile('{{#link href="/about/" parentActiveClass=false}}text{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a href="/about/">text</a>');
});
it('disabling activeClass does not affect parentActiveClass', function () {
compile('{{#link href="/about/" activeClass=""}}parent{{/link}}{{#link href="/about/team/" activeClass=""}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="nav-current-parent" href="/about/">parent</a><a href="/about/team/">child</a>');
compile('{{#link href="/about/" activeClass=false parentActiveClass="parent"}}parent{{/link}}{{#link href="/about/team/" activeClass=false}}child{{/link}}')
.with({relativeUrl: '/about/team/'})
.should.eql('<a class="parent" href="/about/">parent</a><a href="/about/team/">child</a>');
});
});
});
});