To run tests for the helixml/apps-client project, follow the steps outlined below. This guide assumes you have a working setup and you are familiar with the codebase, as well as TypeScript.

Prerequisites

Ensure you have the following installed on your development environment:

• Node.js (version >= 14.x)
• npm (Node package manager, typically bundled with Node.js)
• TypeScript

You can verify your installation by running:

node -v
npm -v
tsc -v

Installation of Dependencies

Before running the tests, install the necessary dependencies that the project requires. Navigate to the root directory of the project and execute:

npm install

This command will install all the dependencies defined in the package.json file.

Setting Up the Testing Framework

The framework used for testing in the helixml/apps-client project is Jest. If Jest is not already installed, or if it’s not included in the package.json, you can add it as follows:

npm install --save-dev jest @types/jest ts-jest

Ensure that the Jest configuration exists in your project. The typical Jest configuration file is either jest.config.js or inside the package.json under the jest key.

Here’s an example of a basic jest.config.js setup:

module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'node',
  testMatch: ['**/__tests__/**/*.test.(ts|js)', '**/?(*.)+(spec|test).(ts|js)'],
};

Writing Tests

Tests for the project should generally reside within a __tests__ directory or can be suffixed with .test.ts. Here’s a simple example of a TypeScript test:

// example.test.ts

describe('Example Test Suite', () => {
    it('should return true when the input is correct', () => {
        const result = someFunction(true);
        expect(result).toBe(true);
    });
});

Replace someFunction with any function you are testing from your application.

Running Tests

To execute the tests, you simply need to run the following command in your terminal from the root directory of the project:

npm test

This will trigger Jest to find and execute all the tests in your project. By default, Jest will run in watch mode if the test command is executed from a development environment.

To run tests without the watch mode, you can use:

npm test -- --watchAll=false

Viewing Test Results

Once tests are run, Jest will output the results in the terminal. Look for a summary that shows the number of tests passed, failed, and any that are skipped:

Test Suites: 1 passed, 1 total
Tests:       3 passed, 3 total
Snapshots:   0 total
Time:        2s
Ran all test suites.

Running Tests with Coverage

To check the code coverage of your tests, you can run:

npm test -- --coverage

Jest will generate a coverage report that shows how much percentage of your code is tested. This report will be available in the coverage directory.

Conclusion

Following these steps will enable you to effectively run tests within the helixml/apps-client project using TypeScript and Jest.

Source: Provided original information.