Svelte with Test-Driven Development by Daniel Irvine

Author:Daniel Irvine
Language: eng
Format: epub
Publisher: Packt Publishing Pvt Ltd
Published: 2023-06-09T00:00:00+00:00

Update them to use the createBirthday helper, shown here:

await performFormAction( createBirthday('Zeus', '2009-02-02') );

There are a couple of tests where the preceding change isn’t straightforward. In the saves unique ids one each new birthday test, you can save the created birthday in the request object, and then pass that into performFormAction twice, as shown in the following code:

it('saves unique ids onto each new birthday', async () => { const request = createBirthday( 'Zeus', '2009-02-02' ); await performFormAction(request); await performFormAction(request); expect(birthdayStore.getAll()[0].id).not.toEqual( birthdayStore.getAll()[1].id ); });

The updates an entrythat shares the same id test needs a specific id passed into the second invocation. Note how the factory method is structured in such a way that uncommon information needs to be named, such as the id field:

it('updates an entry that shares the same id', async () => { await performFormAction( createBirthday('Zeus', '2009-02-02') ); await performFormAction( createBirthday('Zeus Ex', '2007-02-02', { id: storedId() }) ); expect(birthdayStore.getAll()).toHaveLength(1); expect(birthdayStore.getAll()).toContainEqual({ id, name: 'Zeus Ex', dob: '2007-02-02' }); });

For the final test suite, in src/routes/birthdays/page.test.js, the birthdays array can be updated to use two calls to createBirthday, as shown here: const birthdays = [ createBirthday('Hercules', '1994-02-02', { id: '123' }), createBirthday('Athena', '1989-01-01', { id: '234' }) ];

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