This is the one more little bonus article on how to leverage existing test coverage tools to improve unit tests drafting and get easier and deeper insights. To learn more about test coverage check https://istanbul.js.org/ The Setup in Nest.js Instructions of configuring Jest are in… Read More »[Startup MVP recipes #12] Nest.js Unit Testing: Test Coverage
If interested, please also check previous two articles on setting up the tests: https://jczhang.com/2022/08/08/startup-mvp-recipes-9-nest-js-typeorm-postgres-unit-testing-service-onlywith-jest-pg-mem/ https://jczhang.com/2022/08/09/startup-mvp-recipes-10-nest-js-unit-testing-mocking-service-and-the-universal-mock/ References https://medium.com/swlh/jest-and-github-actions-eaf3eaf2427d https://github.com/marketplace/actions/run-jest https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs Config On PR open, we will trigger this github action workflow on the cloud and let it run the checks remotely. Demo
Intro and TL; DR In last article: https://jczhang.com/2022/08/08/startup-mvp-recipes-9-nest-js-typeorm-postgres-unit-testing-service-onlywith-jest-pg-mem/, we had a first glance at how to setup unit test with jest, and inject an in-memory postgres for testing the services. Now we move back to write unit tests for resolvers, and the idea and philosophy… Read More »[Startup MVP recipes #10] Nest.js Unit Testing: Mocking service and the universal mock
In this tutorial we will cover basic strategy of unit testing a service in Nest.js + TypeORM setup. We don’t create an environment for test purpose, but instead, we use pg-mem adapter to run a local in-memory Postgres simulator instance. In this way the db… Read More »[Startup MVP recipes #9] Nest.js TypeORM Postgres Unit Testing (service only)with Jest, pg-mem