Codacy style changes for test files

test/unfold/unfold.js

@@ -1,7 +1,8 @@
 const unfold = (fn, seed) => {
-let result = [],
-val = [null, seed];
-while ((val = fn(val[1]))) result.push(val[0]);
-return result;
+  let result = [],
+    val = [null, seed];
+  while ((val = fn(val[1]))) result.push(val[0]);
+  return result;
 };
+
 module.exports = unfold;