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foundation/exercises/07_unit_testing/database/unit tests/todo.spec.js
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'use strict' | |
const ToDo = require('../modules/todo.js') | |
beforeAll( async() => { | |
// stuff to do before any of the tests run | |
}) | |
afterAll( async() => { | |
// runs after all the tests have completed | |
}) | |
describe('add()', () => { | |
// block of tests | |
// beforeEach( async() => { | |
// todo.clear() | |
// }) | |
afterEach( async() => { | |
// runs after each test completes | |
}) | |
test('add a single item', async done => { | |
expect.assertions(1) | |
try { | |
// ARRANGE | |
const todo = await new ToDo() // DB runs in-memory if no name supplied | |
// ACT | |
await todo.add('bread', 3) | |
const count = await todo.countItems() | |
// ASSERT | |
expect(count).toBe(1) | |
} catch(err) { | |
done.fail(err) | |
} finally { | |
done() | |
} | |
}) | |
test('qty must be a number', async done => { | |
expect.assertions(1) | |
try { | |
// ARRANGE | |
const todo = await new ToDo() | |
// ACT | |
await todo.add('bread', 'three') | |
done.fail('test failed') | |
} catch(err) { | |
// ASSERT | |
expect(err.message).toBe('the quantity must be a number') | |
} finally { | |
done() | |
} | |
}) | |
test('duplicates should increase qty', async done => { | |
expect.assertions(2) | |
try { | |
// ARRANGE | |
const todo = await new ToDo() | |
// ACT | |
await todo.add('bread', 4) | |
await todo.add('bread', 2) | |
const count = await todo.countItems() | |
const data = await todo.getAll() | |
const qty = data[0].qty | |
// ASSERT (note there are two assertions as stated on line 50) | |
expect(count).toBe(1) | |
expect(qty).toEqual(6) | |
} catch(err) { | |
done.fail(err.message) | |
} finally { | |
done() | |
} | |
}) | |
}) | |
describe('delete()', () => { | |
// any tests for the delete() function should be written here | |
}) | |
describe('getAll()', () => { | |
// any tests for the getAll() function should be written here | |
}) | |
describe('clear()', () => { | |
// any tests for the clear() function should be written here | |
}) |