chore: migrate test cases from Chai to Jest

test/e2e/render-to-node-stream.spec.ts

@@ -0,0 +1,38 @@
+import { resolve } from 'path'
+import { drainStream } from '../stub/stream'
+
+describe('.renderToNodeStream()', function () {
+  it('should render to stream in Node.js', done => {
+    const cjs = require('../../dist/liquid.node.cjs')
+    const engine = new cjs.Liquid()
+    const tpl = engine.parseFileSync(resolve(__dirname, '../stub/root/foo.html'))
+    const stream = engine.renderToNodeStream(tpl)
+    let html = ''
+    stream.on('data', (data: string) => { html += data })
+    stream.on('end', () => {
+      try {
+        expect(html).toBe('foo')
+        done()
+      } catch (err) {
+        done(err)
+      }
+    })
+  })
+  it('should throw in browser', async function () {
+    const cjs = require('../../dist/liquid.browser.umd')
+    const engine = new cjs.Liquid()
+    const render = () => engine.renderToNodeStream('foo')
+    return expect(render).toThrow('streaming not supported in browser')
+  })
+})
+
+describe('.renderFileToNodeStream()', function () {
+  it('should render to stream in Node.js', async () => {
+    const cjs = require('../../dist/liquid.node.cjs')
+    const engine = new cjs.Liquid({
+      root: resolve(__dirname, '../stub/root/')
+    })
+    const stream = await engine.renderFileToNodeStream('foo.html')
+    expect(drainStream(stream)).resolves.toBe('foo')
+  })
+})