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liquid.ts
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liquid.ts
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import { Liquid, Context, isFalsy } from '../../../src/liquid'
import * as chai from 'chai'
import { mock, restore } from '../../stub/mockfs'
import * as chaiAsPromised from 'chai-as-promised'
import { drainStream } from '../../stub/stream'
const expect = chai.expect
chai.use(chaiAsPromised)
describe('Liquid', function () {
describe('#plugin()', function () {
it('should call plugin on the instance', async function () {
const engine = new Liquid()
engine.plugin(function () {
this.registerFilter('foo', x => `foo${x}foo`)
})
const html = await engine.parseAndRender('{{"bar"|foo}}')
expect(html).to.equal('foobarfoo')
})
it('should call plugin with Liquid', async function () {
const engine = new Liquid()
engine.plugin(function () {
this.registerFilter('t', function (v) { return isFalsy(v, this.context) })
})
const html = await engine.parseAndRender('{{false|t}}')
expect(html).to.equal('true')
})
})
describe('#parseAndRender', function () {
const engine = new Liquid()
it('should parse and render variable output', async function () {
const html = await engine.parseAndRender('{{"foo"}}')
expect(html).to.equal('foo')
})
it('should parse and render complex output', async function () {
const tpl = '{{ "Welcome|to]Liquid" | split: "|" | join: "("}}'
const html = await engine.parseAndRender(tpl)
expect(html).to.equal('Welcome(to]Liquid')
})
it('should support for-in with variable', async function () {
const src = '{% assign total = 3 | minus: 1 %}' +
'{% for i in (1..total) %}{{ i }}{% endfor %}'
const html = await engine.parseAndRender(src, {})
return expect(html).to.equal('12')
})
})
describe('#express()', function () {
const liquid = new Liquid({ root: '/root' })
const render = liquid.express()
before(function () {
mock({
'/root/foo': 'foo'
})
})
after(restore)
it('should render single template', function (done) {
render.call({ root: '/root' }, 'foo', null as any, (err: Error | null, result: string | undefined) => {
if (err) return done(err)
expect(result).to.equal('foo')
done()
})
})
it('should render single template with Array-typed root', function (done) {
render.call({ root: ['/root'] }, 'foo', null as any, (err: Error | null, result: string | undefined) => {
if (err) return done(err)
expect(result).to.equal('foo')
done()
})
})
})
describe('#renderFile', function () {
it('should throw with lookup list when file not exist', function () {
const engine = new Liquid({
root: ['/boo', '/root/'],
extname: '.html'
})
return expect(engine.renderFile('/not/exist.html')).to
.be.rejectedWith(/Failed to lookup "\/not\/exist.html" in "\/boo\/,\/root\/"/)
})
})
describe('#parseFile', function () {
it('should throw with lookup list when file not exist', function () {
const engine = new Liquid({
root: ['/boo', '/root/'],
extname: '.html'
})
return expect(engine.parseFile('/not/exist.html')).to
.be.rejectedWith(/Failed to lookup "\/not\/exist.html" in "\/boo\/,\/root\/"/)
})
it('should fallback to require.resolve in Node.js', async function () {
const engine = new Liquid({
root: ['/root/'],
extname: '.html'
})
const tpls = await engine.parseFileSync('mocha')
expect(tpls.length).to.gte(1)
expect(tpls[0].token.getText()).to.contain('module.exports')
})
})
describe('#evalValue', function () {
it('should eval string literal', async function () {
const engine = new Liquid()
const ctx = new Context()
const str = await engine.evalValue('"foo"', ctx)
expect(str).to.equal('foo')
})
})
describe('#evalValueSync', function () {
it('should eval string literal', function () {
const engine = new Liquid()
const ctx = new Context()
const str = engine.evalValueSync('"foo"', ctx)
expect(str).to.equal('foo')
})
})
describe('#parse', function () {
it('should resolve relative partials', function () {
const engine = new Liquid({
root: ['/'],
extname: '.html'
})
mock({
'/root/partial.html': 'foo'
})
const tpls = engine.parse('{% render "./partial.html" %}', '/root/index.html')
return expect(engine.renderSync(tpls)).to.equal('foo')
})
it('should resolve against pwd for relative filepath', function () {
const engine = new Liquid({
root: ['/'],
extname: '.html'
})
mock({
[`${process.cwd()}/partial.html`]: 'foo'
})
const tpls = engine.parse('{% render "./partial.html" %}', './index.html')
return expect(engine.renderSync(tpls)).to.equal('foo')
})
})
describe('#parseFileSync', function () {
it('should throw with lookup list when file not exist', function () {
const engine = new Liquid({
root: ['/boo', '/root/'],
extname: '.html'
})
return expect(() => engine.parseFileSync('/not/exist.html'))
.to.throw(/Failed to lookup "\/not\/exist.html" in "\/boo\/,\/root\/"/)
})
it('should throw with lookup list when file not exist', function () {
const engine = new Liquid({
root: ['/boo', '/root/'],
extname: '.html'
})
return expect(() => engine.parseFileSync('/not/exist.html'))
.to.throw(/Failed to lookup "\/not\/exist.html" in "\/boo\/,\/root\/"/)
})
})
describe('#enderToNodeStream', function () {
const engine = new Liquid()
it('should render a simple value', async () => {
const stream = await engine.renderToNodeStream(engine.parse('{{"foo"}}'))
expect(drainStream(stream)).to.eventually.equal('foo')
})
})
describe('#enderFileToNodeStream', function () {
let engine: Liquid
before(function () {
mock({
'/root/foo.html': 'foo',
'/root/error.html': 'A{%throwingTag%}B'
})
engine = new Liquid({ root: ['/root/'] })
engine.registerTag('throwingTag', {
render: function () {
throw new Error('intended render error')
}
})
})
after(restore)
it('should render a simple value', async () => {
const stream = await engine.renderFileToNodeStream('foo.html')
expect(drainStream(stream)).to.be.eventually.equal('foo')
})
it('should throw RenderError when tag throws', async () => {
const stream = await engine.renderFileToNodeStream('error.html')
expect(drainStream(stream)).to.be.rejectedWith(/intended render error/)
})
})
})