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register-filters.ts
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register-filters.ts
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import { expect } from 'chai'
import { Liquid } from '../../../src/liquid'
describe('liquid#registerFilter()', function () {
let liquid: Liquid
beforeEach(() => { liquid = new Liquid() })
describe('key-value arguments', function () {
beforeEach(() => {
liquid.registerFilter('obj_test', function (...args) {
return JSON.stringify(args)
})
})
it('should support key-value arguments', async () => {
const src = `{{ "a" | obj_test: k1: "v1", k2: foo }}`
const dst = '["a",["k1","v1"],["k2","bar"]]'
const html = await liquid.parseAndRender(src, { foo: 'bar' })
return expect(html).to.equal(dst)
})
it('should support mixed arguments', async () => {
const src = `{{ "a" | obj_test: "something", k1: "v1", k2: foo }}`
const dst = '["a","something",["k1","v1"],["k2","bar"]]'
const html = await liquid.parseAndRender(src, { foo: 'bar' })
return expect(html).to.equal(dst)
})
})
describe('async filters', () => {
it('should support async filter', async () => {
liquid.registerFilter('get_user_data', function (userId) {
return Promise.resolve({ userId, userName: userId.toUpperCase() })
})
const src = `{{ userId | get_user_data | json }}`
const dst = '{"userId":"alice","userName":"ALICE"}'
const html = await liquid.parseAndRender(src, { userId: 'alice' })
return expect(html).to.equal(dst)
})
})
describe('raw filters', () => {
beforeEach(() => {
liquid = new Liquid({
outputEscape: 'escape'
})
})
it('should escape filter output when outputEscape set to true', async () => {
liquid.registerFilter('break', (str) => str.replace(/\n/g, '<br/>'))
const src = `{{ "a\nb" | break }}`
const dst = 'a<br/>b'
const html = await liquid.parseAndRender(src)
return expect(html).to.equal(dst)
})
it('should not escape filter output when registered as "raw"', async () => {
liquid.registerFilter('break', {
handler: (str) => str.replace(/\n/g, '<br/>'),
raw: true
})
const src = `{{ "a\nb" | break }}`
const dst = 'a<br/>b'
const html = await liquid.parseAndRender(src)
return expect(html).to.equal(dst)
})
})
})