Run Tests for trackjs/javascript-gameshow Codebase

To run tests for the project, follow these steps:

Install Dependencies

Make sure to have the necessary dependencies installed in your project. You can do this by running:
```
npm install
```
Setup Testing Environment

The project utilizes Jest and Enzyme with the enzyme-adapter-preact-pure for testing. Ensure that the testing setup is properly configured by checking the setupTests.ts file which will configure Enzyme with the appropriate adapter.

The setup might look like this:
```
import { configure } from 'enzyme';
import Adapter from 'enzyme-adapter-preact-pure';

configure({
    adapter: new Adapter()
});
```
This file should typically be located in presenter-app/tests/__mocks__/setupTests.ts.
Executing Tests

To run your tests, execute the following command:
```
npm run test
```
This will invoke Jest to run all test files matching the pattern specified in your configuration. Ensure that your tests are structured in a way that Jest recognizes, typically ending with .test.js or .test.tsx.

Understanding Test Structure

When writing tests, each test suite is usually defined using describe() and individual test cases are represented by it(). For instance, a typical test case might look like this:

describe("GameController", () => {
    describe("getPrizesWon()", () => {
        it("returns no prizes for no correct answers", () => {
            let game = getTestGame();
            game.questionsAsked = [
                {
                    questionIdx: 0,
                    questionId: "1234",
                    answerId: "1",
                    isCorrect: false
                }
            ];

            expect(GameController.getPrizesWon(game)).toMatchObject([]);
        });

        // Additional tests...
    });
});

Review Test Results

After running the tests, review the output in your console. Jest will provide details on the number of tests that passed, failed, and returned errors.
Code Coverage (Optional)

If you want to check the code coverage, you can add the following script to your package.json:
```
"scripts": {
    "test:cov": "jest --coverage"
}
```
Then run it using:
```
npm run test:cov
```
Ensure Compliance with Linting

Run ESLint to ensure that your TypeScript files maintain code quality. Execute:
```
npm run lint
```

Following these steps will enable you to run tests effectively, ensuring that all functionalities in the project are working as expected.

Sources: