playwright/tests/expect/assertionCounts.test.ts

79 lines
2.4 KiB
TypeScript

/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
*/
import { test, expect } from './fixtures';
import { expect as expectUnderTest } from '../../packages/playwright/bundles/expect/src/expectBundleImpl';
test.describe('.assertions()', () => {
test('does not throw', () => {
expectUnderTest.assertions(2);
expectUnderTest('a').not.toBe('b');
expectUnderTest('a').toBe('a');
});
test('redeclares different assertion count', () => {
expectUnderTest.assertions(3);
expectUnderTest('a').not.toBe('b');
expectUnderTest('a').toBe('a');
expectUnderTest.assertions(2);
});
test('expects no assertions', () => {
expectUnderTest.assertions(0);
});
});
test.describe('.hasAssertions()', () => {
test('does not throw if there is an assertion', () => {
expectUnderTest.hasAssertions();
expectUnderTest('a').toBe('a');
});
test('throws if expected is not undefined', () => {
expect(() =>
(expectUnderTest as any).hasAssertions(2)
).toThrowErrorMatchingSnapshot(`<d>expect(</><r>received</><d>)[.not].hasAssertions()</>
<b>Matcher error</>: this matcher must not have an expected argument
Expected has type: number
Expected has value: <g>2</>`);
});
});
test.describe('numPassingAsserts', () => {
test.skip('verify the default value of numPassingAsserts', () => {
const { numPassingAsserts } = expectUnderTest.getState();
expect(numPassingAsserts).toBe(0);
});
test('verify the resetting of numPassingAsserts after a test', () => {
expect('a').toBe('a');
expect('a').toBe('a');
// reset state
expectUnderTest.extractExpectedAssertionsErrors();
const { numPassingAsserts } = expectUnderTest.getState();
expect(numPassingAsserts).toBe(0);
});
test.skip('verify the correctness of numPassingAsserts count for passing test', () => {
expect('a').toBe('a');
expect('a').toBe('a');
const { numPassingAsserts } = expectUnderTest.getState();
expect(numPassingAsserts).toBe(2);
});
test.skip('verify the correctness of numPassingAsserts count for failing test', () => {
expect('a').toBe('a');
try {
expect('a').toBe('b');
} catch (error) { }
const { numPassingAsserts } = expectUnderTest.getState();
expect(numPassingAsserts).toBe(1);
});
});