Migrated tests to jest

Used jest-codemods to migrate, will have to pass everything by hand before we can merge.

test/zip/zip.js

@@ -1,7 +0,0 @@
-const zip = (...arrays) => {
-const maxLength = Math.max(...arrays.map(x => x.length));
-return Array.from({ length: maxLength }).map((_, i) => {
-return Array.from({ length: arrays.length }, (_, k) => arrays[k][i]);
-});
-};
-module.exports = zip;