selections e2e test (#1136)

* selections e2e test

* .only

* adde test

* make invalid kcl test pass on macos runner

* further attempt to solve invalid code test on macos

* add comment

src/components/EngineCommands.tsx

@@ -32,7 +32,7 @@ export const EngineCommands = () => {
           const stringer = JSON.stringify(command)
           if (containsFilter && !stringer.includes(containsFilter)) return null
           return (
-            <pre className="text-xs">
+            <pre className="text-xs" key={index}>
               <code
                 key={index}
                 data-message-type={command.type}