mh-ssg VS jest

This week, I've published my 1st package on npm - mh-ssg - a static site generator CLI.

I also worked on another project, mh-ssg, and added tests to this project as well. I created unit tests for a function called processFolder(). This function accepts an input folder path, output folder path and stylesheet URL. I created two unit tests, one which tests when a valid input folder containing files is passed to the function and one which tests when a non-existent folder is passed to the function. The function logs a message to the console depending on how many files are saved in the output folder, so the tests I wrote tested for these console logs.

For this lab, I picked Jest as the testing tool for mh-ssg. This is a popular Javascript testing framework thanks to its simplicity and ease of usage.

To maintain the quality of source code, I added a formatter and a linter for my project.

Throughout the previous week, I was exploring Docusaurus and found that they have a feature to support static files. I find this feature very useful for any static site generator since images, favicons, stylesheets, etc. are very common parts of a webpage. Therefore, I decided to add this feature in my tool.

As new features are added to the tool, I realized that the logic is not clear anymore and some parts were duplicated, making it inefficient and hard to maintain. This time, I decided to focus on removing those duplications by moving the statements to the appropriate place and extracting function for reusability. All the refactoring was done through a single commit with the help of git rebase.

Luke also implemented the same feature for my project. His code in general was good but I suggested some changes including separating modules and combining functions to remove code duplicates.

After looking through my classmates' projects, I decided to work on Minh Hang's static site generator and filed an issue to her repo.

In the last update, my friend - Dustin - helped to add Markdown as a valid input for my tool. Markdown syntaxes are different from HTML syntaxes and he has worked on converting some of them. This time I decided to add two more:

I've been sending a lot of pull requests but this was actually my first time receiving one 😄 and Dustin was my first contributor. He also proposed to add Markdown support for my tool and to parse all the headings, bold, italics and link from markdown into the corresponding HTML tags. I scanned through the pull request and found some minor issues, including missing new feature in documentation and missing the handling of the output file name. We also had different opinions about the implementation of .txt file and .md file. However after discussion, we came to agreement and I approved his changes.

There are several testing approaches you can take to ascertain the functionality of the auth API. One way would be to automate the testing using unit tests with tools like Jest and Supertest. Alternatively, you can make use of API clients like Postman or the Thunder Client VS Code extension to test the API.

GitHub | Website

Jest

you have selected a testing framework. In my case, it's Jest with Supertest

Jest, created and maintained by Facebook, is a JavaScript testing framework with a focus on simplicity. It is often recognized for its zero-configuration setup and seamless integration, especially with React applications, making it a favored choice for developers in both small-scale projects and large enterprise applications.

Jest (https://jestjs.io/)

console.error Jest encountered an unexpected token Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. By default "node\_modules" folder is ignored by transformers. Here's what you can do: • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it. • If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript • To have some of your "node\_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config. • If you need a custom transformation specify a "transform" option in your config. • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option. You'll find more details and examples of these config options in the docs: https://jestjs.io/docs/configuration For information about custom transformations, see: https://jestjs.io/docs/code-transformation

Note: I will be using Jest as testing framework throughout the examples.

We use Jest Framework for testing. Jest is not a dogma, and, of course, in its place can be any other test runner, such as Mocha or Ava. Let's focus on tests. I'll provide a short example because I don’t want to waste your time. You can find the full version here. It's crucial to read the comments in the code below. Let's go!

Jest has long been my favorite got to test runner when it comes to UI unit and integration testing. With tools like React Testing Library (Testing Library framework for React) you get the benefit of very easy to write and maintain tests, as well as a quick and efficient way to run our tests.