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@ -10,16 +10,18 @@ If you have a suggestion to improve an exercise, an idea for a new exercise, or
## How To Use These Exercises ## How To Use These Exercises
Before you start you should have a few things installed on your machine: 1. Before you start you should have a few things installed on your machine:
* **NPM**. We should have installed NPM already in our [Installing Node.js](https://www.theodinproject.com/paths/foundations/courses/foundations/lessons/installing-node-js) lesson. Just in case you need to check, type `npm --version` in your terminal. If you get back `Command 'npm' not found, but can be installed with:`, **do not follow the instructions in the terminal** to install with `apt-get` as this causes permission issues. Instead, go back to the installation lesson and install Node with NVM by following the instructions there.
1. **NPM**. We should have installed NPM already in [this Installing Node.js lesson](https://www.theodinproject.com/paths/foundations/courses/foundations/lessons/installing-node-js). Just in case you need to check, type `npm --version` in your terminal. If you get back `Command 'npm' not found, but can be installed with:`, do NOT follow the instructions in the terminal to install with `apt-get`. (This causes permission issues.) Instead, go back to the installation lesson and install Node with NVM by following the instructions there. * **Jest**. After cloning this repository to your local machine, go into the newly created directory (`cd javascript-exercises`) and run `npm install`. This will install Jest and set up the testing platform based on our preconfigured settings.
2. **A fork and clone of this repository**. To learn how to fork a repository, see the GitHub documentation on how to [fork a repo](https://docs.github.com/en/get-started/quickstart/fork-a-repo). 2. Fork and clone this repository. To learn how to fork a repository, see the GitHub documentation on how to [fork a repo](https://docs.github.com/en/get-started/quickstart/fork-a-repo).
- Copies of repositories on your machine are called clones. If you need help cloning to your local environment you can learn how from the GitHub documentation on [cloning a repository](https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/cloning-a-repository-from-github/cloning-a-repository). * Copies of repositories on your machine are called clones. If you need help cloning to your local environment you can learn how from the GitHub documentation on [cloning a repository](https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/cloning-a-repository-from-github/cloning-a-repository).
3. **Jest**. After cloning this repository to your local machine, go into the newly created directory (`cd javascript-exercises`) and run `npm install`. This will install Jest and set up the testing platform based on our preconfigured settings. 3. Each exercise includes 3 files: a markdown file with a description of the task, an empty (or mostly empty) JavaScript file, and a set of tests. To complete an exercise, you'll need to go to the exercise directory with `cd exerciseName` in the terminal and run `npm test exerciseName.spec.js`. This should run the test file and show you the output.
* When you first run a test, it will fail. This is by design! You must open the exercise file and write the code needed to get the test to pass.
Each exercise includes 3 files: a markdown file with a description of the task, an empty (or mostly empty) JavaScript file, and a set of tests. To complete an exercise, you'll need to go to the exercise directory with `cd exerciseName` in the terminal and run `npm test exerciseName.spec.js`. This should run the test file and show you the output. When you first run a test, it will fail. This is by design! You must open the exercise file and write the code needed to get the test to pass. 4. Some of the exercises have test conditions defined in their spec file as `test.skip` compared to `test`. This is purposeful. After you pass one `test`, you will change the next `test.skip` to `test` and test your code again. You'll do this until all conditions are satisfied. **All tests must pass at the same time**, and you should not have any `test.skip` instances by the time you finish an exercise.
5. Once you successfully finish an exercise, check TOP's `solutions` branch to compare it with yours.
Some of the exercises have test conditions defined in their spec file that are defined as 'test.skip' compared to 'test'. This is purposeful. After you pass your first 'test', you will change the next 'test.skip' to 'test' and test your code again. You'll do this until all conditions are satisfied. **ALL TESTS MUST PASS AT THE SAME TIME.** * You should not be checking the solution for an exercise until you finish it!
* Keep in mind that TOP's solution is not the only solution. Generally as long as all of the tests pass, your solution should be fine.
6. Do not submit your solutions to this repo, as any PRs that do so will be closed without merging.
**Note**: Due to the way Jest handles failed tests, it may return an exit code of 1 if any tests fail. NPM will interpret this as an error and you may see some `npm ERR!` messages after Jest runs. You can ignore these, or run your test with `npm test exerciseName.spec.js --silent` to supress the errors. **Note**: Due to the way Jest handles failed tests, it may return an exit code of 1 if any tests fail. NPM will interpret this as an error and you may see some `npm ERR!` messages after Jest runs. You can ignore these, or run your test with `npm test exerciseName.spec.js --silent` to supress the errors.
@ -28,7 +30,3 @@ The first exercise, `helloWorld`, will walk you through the process in-depth.
## Debugging ## Debugging
To debug functions, you can run the tests in the Visual Studio Code debugger terminal. You can open this by clicking the "Run and Debug" icon on the left or pressing `ctrl + shift + D`, then clicking JavaScript Debug Terminal. You will be able to set breakpoints as you would in the Chrome DevTools debugger. You can run `npm test exerciseName.spec.js` to then execute your code up until your breakpoint and step through your code as necessary. **NOTE**: To take advantage of the debugger, you **MUST** run the script in the debugger terminal, not the bash or zsh terminal. To debug functions, you can run the tests in the Visual Studio Code debugger terminal. You can open this by clicking the "Run and Debug" icon on the left or pressing `ctrl + shift + D`, then clicking JavaScript Debug Terminal. You will be able to set breakpoints as you would in the Chrome DevTools debugger. You can run `npm test exerciseName.spec.js` to then execute your code up until your breakpoint and step through your code as necessary. **NOTE**: To take advantage of the debugger, you **MUST** run the script in the debugger terminal, not the bash or zsh terminal.
## Solutions
Solutions for these exercises can be found in this repo on the 'solutions' branch.