# Testing

# Run tests

Your app is installed and runs in development mode but does every component in the app work correctly?

To check if all the features, components, services, etc. work as intended, you should run the test suite with npm run test.

You will see something like this:

File           | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
All files      |     100 |      100 |     100 |     100 |   


Test Suites: 63 passed, 63 total
Tests:       255 passed, 255 total
Snapshots:   0 total
Time:        9.633 s
Ran all test suites.

Process finished with exit code 0

It shows that you have an application that is well tested and from now on you should get feedback if you accidentally break included features when you run the tests.

The npm test command will be executed in the before-commit hook. That will guarantee that the code you are going to commit will not break the application.

# Testing Library

The Testing Library (opens new window) family of libraries is a very light-weight solution for testing without all the implementation details.

Vuesion uses the testing library to encourage good testing practices. To get familiar with the testing library have a look at the tests provided from Vuesion and have a look at the documentation (opens new window).

# Configuring test coverage

By default, the coverage threshold is set to 100%.

If you think this is just too much for your project, configure the appropriate thresholds in the ./jest.config.js.

"coverageThreshold": {
    "global": {
        "branches": 100, 
        "functions": 100, 
        "lines": 100, 
        "statements": 100