web-test-runner-jasmine

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A Web Test Runner plugin for running Jasmine.

Setup

Import jasmineTestRunnerConfig and add to your web-test-runner.config.mjs.
If using TypeScript you can add esbuildPlugin.

``javascript
import { playwrightLauncher } from '@web/test-runner-playwright';
import { esbuildPlugin } from '@web/dev-server-esbuild';
import { jasmineTestRunnerConfig } from 'web-test-runner-jasmine';

export default /* @type {import("@web/test-runner").TestRunnerConfig} / ({
...jasmineTestRunnerConfig(),
testFramework: {
config: {
defaultTimeoutInterval: 5000
},
},
nodeResolve: true,
files: ['./src/*.spec.js'],
browsers: [playwrightLauncher({ product: 'chromium' })],
plugins: [esbuildPlugin({ target: 'auto', sourceMap: true })]
});
`

Once added you can use Jasmine within your tests.

`javascript
describe('a test suite', () => {
let element: HTMLElement;

beforeEach(() => {
element = document.createElement('p');
element.innerHTML = 'hello there';
});

afterEach(() => {
element.remove();
});

it('should create element', () => {
expect(element.innerHTML).toBe('hello there');
});
});
`

To run your tests run web-test-runner in the terminal.

`bash
web-test-runner
`

TypeScript

If you use TypeScript you will need to add some additional configuiration. Update your
config to read .ts extentions and add the ts: true flag to the esBuildPlugin.

`javascript
import { playwrightLauncher } from '@web/test-runner-playwright';
import { esbuildPlugin } from '@web/dev-server-esbuild';
import { jasmineTestRunnerConfig } from 'web-test-runner-jasmine';

export default /* @type {import("@web/test-runner").TestRunnerConfig} / ({
...
files: ['./src/*.spec.ts'],
plugins: [esbuildPlugin({ ts: true, json: true, target: 'auto', sourceMap: true })]
...
});
`

Ensure you have the @types/jasmine package installed and add jasmine to the types
in your tsconfig.json.

`json
{
"compilerOptions": {
...
"types": ["jasmine"],
...
}
}
``

Learn more about Web Test Runner.