fix: case/when array equality, #673

Author: Yang Jun

src/tags/case.ts

@@ -1,4 +1,5 @@
 import { ValueToken, Liquid, toValue, evalToken, Value, Emitter, TagToken, TopLevelToken, Context, Template, Tag, ParseStream } from '..'
+import { equals } from '../render'
 
 export default class extends Tag {
   value: Value
@@ -58,7 +59,7 @@ export default class extends Tag {
     for (const branch of this.branches) {
       for (const valueToken of branch.values) {
         const value = yield evalToken(valueToken, ctx, ctx.opts.lenientIf)
-        if (target === value) {
+        if (equals(target, value)) {
           yield r.renderTemplates(branch.templates, ctx, emitter)
           branchHit = true
           break

test/integration/tags/case.spec.ts

@@ -119,4 +119,17 @@ describe('tags/case', function () {
     '{%- endcase %}', {})
     expect(result).toEqual('show this')
   })
+  it('should apply value equal for arrays', () => {
+    const engine = new Liquid()
+    const result = engine.parseAndRenderSync(`
+      {%- assign x = "a,b,c" | split: "," %}
+      {%- assign y = "a,b,c" | split: "," %}
+      {% case x %}{% when y %}TRUE{% else %}FALSE{% endcase %}
+      {% if x == y %}TRUE{% else %}FALSE{% endif %}
+    `)
+    expect(result).toEqual(`
+      TRUE
+      TRUE
+    `)
+  })
 })