77 lines
3.5 KiB
Markdown
77 lines
3.5 KiB
Markdown
# Tests
|
|
|
|
- There are two different types of tests executed:
|
|
1. [Unit tests](#unit-tests)
|
|
2. [Integration tests](#integration-tests)
|
|
3. [End-to-end (E2E) tests](#e2e-tests)
|
|
- All tests
|
|
- Uses [Mocha](https://mochajs.org/) and [Chai](https://www.chaijs.com/).
|
|
- Are written in files that includes `.spec` extension.
|
|
- 💡 You can use path/module alias `@/tests` in import statements.
|
|
|
|
## Unit tests
|
|
|
|
- Tests each component in isolation.
|
|
- Defined in [`./tests/unit`](./../tests/unit).
|
|
|
|
### Unit tests structure
|
|
|
|
- [`./src/`](./../src/)
|
|
- Includes code that will be tested tested.
|
|
- [`./tests/unit/`](./../tests/unit/)
|
|
- Includes test code.
|
|
- Tests follow same folder structure as [`./src/`](./../src).
|
|
- E.g. if system under test lies in [`./src/application/ApplicationFactory.ts`](./../src/application/ApplicationFactory.ts) then its tests would be in test would be at [`./tests/unit/application/ApplicationFactory.spec.ts`](./../tests/unit/application/ApplicationFactory.spec.ts).
|
|
- [`shared/`](./../tests/unit/shared/)
|
|
- Includes common functionality that's shared across unit tests.
|
|
- [`Assertions/`](./../tests/unit/shared/Assertions):
|
|
- Common assertions that extend [Chai Assertion Library](https://www.chaijs.com/).
|
|
- Asserting functions should start with `expect` prefix.
|
|
- [`TestCases/`](./../tests/unit/shared/TestCases/)
|
|
- Shared test cases.
|
|
- Test runner functions that uses `it()` from Mocha test [Mocha test framework](https://mochajs.org/) should be prefixed with `it.`
|
|
- E.g. `itEachAbsentCollectionValue()`.
|
|
- [`Stubs/`](./../tests/unit/shared/Stubs)
|
|
- Includes stubs to be able to test components in isolation.
|
|
- Stubs have minimal and dummy behavior to be functional, they may also have spying or mocking functions.
|
|
|
|
### Unit tests naming
|
|
|
|
- Each test suite first describe the system under test.
|
|
- E.g. tests for class `Application` is categorized under `Application`.
|
|
- Tests for specific methods are categorized under method name (if applicable).
|
|
- E.g. test for `run()` is categorized under `run`.
|
|
|
|
### Act, arrange, assert
|
|
|
|
- Tests use act, arrange and assert (AAA) pattern when applicable.
|
|
- **Arrange**
|
|
- Should set up the test case.
|
|
- Starts with comment line `// arrange`.
|
|
- **Act**
|
|
- Should cover the main thing to be tested.
|
|
- Starts with comment line `// act`.
|
|
- **Assert**
|
|
- Should elicit some sort of response.
|
|
- Starts with comment line `// assert`.
|
|
|
|
## Integration tests
|
|
|
|
- Tests functionality of a component in combination with others (not isolated).
|
|
- Ensure dependencies to third parties work as expected.
|
|
- Defined in [`./tests/integration`](./../tests/integration).
|
|
|
|
## E2E tests
|
|
|
|
- Test the functionality and performance of a running application.
|
|
- E2E tests are configured by vue plugin [`e2e-cypress`](https://github.com/vuejs/vue-cli/tree/dev/packages/@vue/cli-plugin-e2e-cypress#readme) for Vue CLI.
|
|
- Names and folders are structured logically based on tests.
|
|
- The structure is following:
|
|
- [`cypress.json`](./../cypress.json): Cypress configuration file.
|
|
- [`./tests/e2e/`](./../tests/e2e/): Base Cypress folder.
|
|
- [`/specs/`](./../tests/e2e/specs/): Test files, test are named with `.spec.js` extension.
|
|
- [`/plugins/index.js`](./../tests/e2e/plugins/index.js): Plugin file executed before project is loaded.
|
|
- [`/support/index.js`](./../tests/e2e/support/index.js): Support file, runs before every single spec file.
|
|
- *(Ignored)* `/videos`: Asset folder for videos taken during tests.
|
|
- *(Ignored)* `/screenshots`: Asset folder for Screenshots taken during tests.
|