QUnit Test Suite Integration

Build a test runner configuration that integrates QUnit tests with the test execution framework to run tests across multiple browsers.

Requirements

Your task is to configure a test runner that executes QUnit tests and reports the results properly. The configuration should:

1. Set up the test execution framework to run QUnit tests
2. Configure the framework to load and execute tests from a test file
3. Ensure proper test result reporting and lifecycle management
4. Run tests in at least one browser (Chrome in headless mode)

Test File

Create a test file tests/calculator.test.js that tests a simple calculator module:

• Test addition: verify that 2 + 3 = 5 @test
• Test subtraction: verify that 5 - 2 = 3 @test
• Test multiplication: verify that 4 * 3 = 12 @test

Implementation Files

Create the following files:

1. karma.conf.js - Configuration file for the test runner @generates
2. tests/calculator.test.js - QUnit test file for calculator functions @generates
3. src/calculator.js - Simple calculator module with add, subtract, and multiply functions @generates

Expected Behavior

When you run the test suite:

• All three tests should execute successfully
• Test results should be reported to the console
• The test runner should exit with code 0 if all tests pass
• Tests should run in a headless browser environment

Dependencies { .dependencies }

karma-qunit { .dependency }

Provides QUnit test framework integration with the test runner.

qunit { .dependency }

QUnit testing framework for writing and running tests.

karma { .dependency }

Test runner that executes tests across multiple browsers.

karma-chrome-launcher { .dependency }

Launcher for running tests in Chrome browser.