Fixed jest mocha

test/custom-handlers.test.js

@@ -1,4 +1,9 @@
 const cwd = process.cwd()
+const is_jest = !!global.test
+if (is_jest) { // it's jest
+  global.before = (msg,fn) => global.beforeAll(fn||msg)
+  global.after = (msg,fn) => global.afterAll(fn||msg)
+}
 before (()=> process.chdir(__dirname))
 after (()=> process.chdir(cwd))