60 lines
2.2 KiB
Markdown
60 lines
2.2 KiB
Markdown
# Integration tests for Angular
|
|
|
|
This directory contains end-to-end tests for Angular. Each directory is a self-contained application that exactly mimics how a user might expect Angular
|
|
to work, so they allow high-fidelity reproductions of real-world issues.
|
|
|
|
For this to work, we first build the Angular distribution just like we would
|
|
publish it to npm, then install the distribution into each app.
|
|
|
|
To test Angular CLI applications, we generate integration tests such as `cli-hello-world`.
|
|
This was generated with a current version of the CLI, and the only modification was replacement of `@angular/*` packages with their counterparts coming from `file:../../dist/packages-dist/*`.
|
|
When a significant change is released in the CLI, the application should be re-generated from scratch:
|
|
|
|
```bash
|
|
$ cd integration
|
|
$ rm -rf cli-hello-world
|
|
$ ng new cli-hello-world
|
|
# Edit cli-hello-world/package.json to point the @angular packages to dist/packages-dist, and preserve local mods to
|
|
# ng build
|
|
# ng test
|
|
# typescript version
|
|
```
|
|
|
|
## Render3 tests
|
|
|
|
The directory `hello_world_cli` contains a test for render3 used with the angular cli.
|
|
|
|
If the Angular CLI is modified to generate a render3 application this should be replaced with that project.
|
|
|
|
If the render3 is updated to support the Angular 5 bootstrap a version of this project should be created that
|
|
uses the Angular 5 bootstrap.
|
|
|
|
## Writing an integration test
|
|
|
|
The API for each test is:
|
|
|
|
- Each sub-directory here is an integration test
|
|
- Each test should have a `package.json` file
|
|
- The test runner will run `yarn` and `yarn test` on the package
|
|
|
|
This means that the test should be started by test script, like
|
|
```
|
|
'scripts' { 'test': 'runProgramA && assertResultIsGood' }
|
|
```
|
|
|
|
Note that the `package.json` file uses a special `file://../../dist` scheme
|
|
to reference the Angular packages, so that the locally-built Angular
|
|
is installed into the test app.
|
|
|
|
Also, beware of floating (non-locked) dependencies. If in doubt
|
|
you can install the package directly from `file:../../node_modules`.
|
|
|
|
## Running integration tests
|
|
|
|
```
|
|
$ ./integration/run_tests.sh
|
|
```
|
|
|
|
The test runner will first re-build any stale npm packages, then `cd` into each
|
|
subdirectory to execute the test.
|