Add steps for running tests and linters/formatters

Author: dragid10

README.md

@@ -78,7 +78,7 @@ Follow these steps and note these guidelines to begin contributing:
 
   ![Pre-commit install terminal](/assets/images/pre-commit_install_terminal.png)
 
-- After installing the dependencies, its time to run the application. We do this by running the command `bundle exec jekyll serve` or run the default **Build Task** <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>B</kbd>:
+- After installing the dependencies, its time to run the application. We do this by running the command `bundle exec jekyll serve > /dev/null 2>&1 &` or run the default **Build Task** <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>B</kbd>:
 
   ![Jekyll serve terminal](/assets/images/jekyll_serve_terminal.png)
 
@@ -90,9 +90,33 @@ Follow these steps and note these guidelines to begin contributing:
 
   ![Running page](/assets/images/running_page.png)
 
-### Testing Changes
+### Testing Changes (create new tests as needed)
 
-- Test your changes (create new tests as needed)
+- To run the test suites for the codebase
+
+  - Ensure the site is running locally with `bundle exec jekyll serve > /dev/null 2>&1 &`. This will run the server in the background, and any content changes will immediately reflect on the site.
+
+    ![Jekyll serve terminal](/assets/images/jekyll_server_start_terminal.png)
+
+    - If you need to restart the server, you can run `killall jekyll` to stop the server and then run `bundle exec jekyll serve > /dev/null 2>&1 &` to start the server again.
+
+  - Run all tests in the test-suite with the command `python3 -m pytest`:
+
+    ![Pytest terminal](/assets/images/pytest_run_terminal.png)
+
+### Pushing Changes
+
+- Run `pre-commit run --all` to ensure your code is formatted and linted correctly before pushing your changes.
+
+  ![Pre-commit run terminal](/assets/images/pre-commit_run_terminal.png)
+
+- Run `git commit -m "<Your commit message>"` to commit your changes.
+
+  ![Git commit terminal](/assets/images/git_commit_terminal.png)
+
+- Finally run `git push origin <your-branch-name>` to push your changes to your fork.
+
+  ![Git push terminal](/assets/images/git_push_terminal.png)
 
 - Once you’ve committed and pushed all of your changes to GitHub, go to the page for your fork on GitHub, select your development branch, and click the pull request button. Please ensure that you compare your feature branch to the desired branch of the repo you are supposed to make a PR to. If you need to make any adjustments to your pull request, just push the updates to GitHub. Your pull request will automatically track the changes in your development branch and update it. 🥳