fix: throw an error if : omitted unintentionally, #212, #208

test/integration/builtin/filters/array.ts

@@ -1,6 +1,8 @@
 import { test } from '../../../stub/render'
 import { Liquid } from '../../../../src/liquid'
-import { expect } from 'chai'
+import { expect, use } from 'chai'
+import * as chaiAsPromised from 'chai-as-promised'
+use(chaiAsPromised)
 
 describe('filters/array', function () {
   let liquid: Liquid
@@ -25,6 +27,11 @@ describe('filters/array', function () {
         '{{ beatles | join }}'
       return test(src, 'John Paul George Ringo')
     })
+    it('should throw when comma missing', async () => {
+      const src = '{% assign beatles = "John, Paul, George, Ringo" | split: ", " %}' +
+        '{{ beatles | join " and " }}'
+      return expect(liquid.parseAndRender(src)).to.be.rejectedWith('unexpected token at "\\" and \\"", line:1, col:65')
+    })
   })
   it('should support split/last', function () {
     const src = '{% assign my_array = "zebra, octopus, giraffe, tiger" | split: ", " %}' +