(v7.x backport) test: refactor test-stream2-readable-wrap.js
test: refactor test-stream2-readable-wrap.js
implement callback wrapper common.mustCall
remove process.on('exit') with callback wrapper common.mustCall
PR-URL: https://github.com/nodejs/node/pull/11784 Backport-of: https://github.com/nodejs/node/pull/10551