add flaky test

javascript/function.js

@@ -4,8 +4,12 @@ function someFunc(arg1, arg2) {
   return _.has(arg1, arg2);
 }
 
+function flaky(arg1, arg2) {
+  return Math.random() < 0.5
+}
+
 function dummyFunc() {
   return true
 }
 
-export { dummyFunc, someFunc }; 
+export { dummyFunc, someFunc, flaky }; 

javascript/function.spec.js

@@ -1,6 +1,11 @@
-import { dummyFunc } from "./function";
+import { dummyFunc, flaky } from "./function";
 
 test('baseline', () => {
         expect(dummyFunc()).toBe(true);
     }
+);
+
+test('flaky', () => {
+        expect(flaky()).toBe(true);
+    }
 );