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Serenity/JS: Next generation acceptance testing library for modern web applications.

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import { expect, ifExitCodeIsOtherThan, logOutput, PickEvent } from '@integration/testing-tools'; import { SceneFinished, SceneStarts, SceneTagged, TestRunnerDetected } from '@serenity-js/core/lib/events'; import { trimmed } from '@serenity-js/core/lib/io'; import { ExecutionFailedWithAssertionError, ExecutionFailedWithError, ExecutionSuccessful, FeatureTag, Name, ProblemIndication } from '@serenity-js/core/lib/model'; import { describe, it } from 'mocha'; import { mocha } from '../src/mocha'; describe('@serenity-js/mocha', function () { this.timeout(60 * 1000); describe('reports a scenario that', () => { it('fails because of a failing Screenplay expectation', () => mocha('examples/screenplay/assertion-error.spec.js') .then(ifExitCodeIsOtherThan(1, logOutput)) .then(result => { expect(result.exitCode).to.equal(1); PickEvent.from(result.events) .next(SceneStarts, event => expect(event.details.name).to.equal(new Name('A screenplay scenario correctly reports assertion errors'))) .next(SceneTagged, event => expect(event.tag).to.equal(new FeatureTag('Mocha reporting'))) .next(TestRunnerDetected, event => expect(event.name).to.equal(new Name('Mocha'))) .next(SceneFinished, event => { const outcome: ProblemIndication = event.outcome as ProblemIndication; expect(outcome).to.be.instanceOf(ExecutionFailedWithAssertionError); expect(outcome.error.name).to.equal('AssertionError'); expect(outcome.error.message).to.match(new RegExp(trimmed` | Expected false to equal true | | Expectation: equals\\(true\\) | | Expected boolean: true | Received boolean: false | | \\s{4}at .*examples/screenplay/assertion-error.spec.js:11:24`)); }) ; })); it('fails when discarding an ability results in Error', () => mocha('examples/screenplay/ability-discard-error.spec.js') .then(ifExitCodeIsOtherThan(1, logOutput)) .then(result => { expect(result.exitCode).to.equal(1); PickEvent.from(result.events) .next(SceneStarts, event => expect(event.details.name).to.equal(new Name('A screenplay scenario fails when discarding an ability fails'))) .next(SceneTagged, event => expect(event.tag).to.equal(new FeatureTag('Mocha reporting'))) .next(TestRunnerDetected, event => expect(event.name).to.equal(new Name('Mocha'))) .next(SceneFinished, event => { const outcome: ProblemIndication = event.outcome as ProblemIndication; expect(outcome).to.be.instanceOf(ExecutionFailedWithError); expect(outcome.error.name).to.equal('Error'); const message = outcome.error.message.split('\n'); expect(message[0]).to.equal('1 async operation has failed to complete:'); expect(message[1]).to.equal('[Stage] Dismissing Donald... - TypeError: Some internal error in ability'); }) ; })); it(`fails when discarding an ability doesn't complete within a timeout`, () => mocha('examples/screenplay/ability-discard-timeout.spec.js') .then(ifExitCodeIsOtherThan(1, logOutput)) .then(result => { expect(result.exitCode).to.equal(1); PickEvent.from(result.events) .next(SceneStarts, event => expect(event.details.name).to.equal(new Name('A screenplay scenario fails when discarding an ability fails'))) .next(SceneTagged, event => expect(event.tag).to.equal(new FeatureTag('Mocha reporting'))) .next(TestRunnerDetected, event => expect(event.name).to.equal(new Name('Mocha'))) .next(SceneFinished, event => { const outcome: ProblemIndication = event.outcome as ProblemIndication; expect(outcome).to.be.instanceOf(ExecutionFailedWithError); expect(outcome.error.name).to.equal('Error'); const message = outcome.error.message.split('\n'); expect(message[0]).to.equal('1 async operation has failed to complete within a 50ms cue timeout:'); expect(message[1]).to.match(/\d+ms - \[Stage] Dismissing Donald\.\.\./); }) ; })); it(`executes all the scenarios in the test suite even when some of them fail because of an error when discarding an ability`, () => mocha('examples/screenplay/ability-discard-error-should-not-affect-stage-cue.spec.js') .then(ifExitCodeIsOtherThan(2, logOutput)) .then(result => { expect(result.exitCode).to.equal(2); // 2 failures, so Mocha returns an exit code of 2 PickEvent.from(result.events) .next(SceneStarts, event => expect(event.details.name).to.equal(new Name('A screenplay scenario fails when discarding an ability fails'))) .next(SceneFinished, event => { const outcome: ProblemIndication = event.outcome as ProblemIndication; expect(outcome).to.be.instanceOf(ExecutionFailedWithError); expect(outcome.error.name).to.equal('Error'); const message = outcome.error.message.split('\n'); expect(message[0]).to.equal('1 async operation has failed to complete:'); expect(message[1]).to.equal('[Stage] Dismissing Donald... - TypeError: Some internal error in ability'); }) .next(SceneStarts, event => expect(event.details.name).to.equal(new Name('A screenplay scenario succeeds when ability is discarded successfully'))) .next(SceneFinished, event => { expect(event.outcome).to.be.instanceOf(ExecutionSuccessful); }) .next(SceneStarts, event => expect(event.details.name).to.equal(new Name('A screenplay scenario fails if the ability fails to discard again'))) .next(SceneFinished, event => { const outcome: ProblemIndication = event.outcome as ProblemIndication; expect(outcome).to.be.instanceOf(ExecutionFailedWithError); expect(outcome.error.name).to.equal('Error'); const message = outcome.error.message.split('\n'); expect(message[0]).to.equal('1 async operation has failed to complete:'); expect(message[1]).to.equal('[Stage] Dismissing Donald... - TypeError: Some internal error in ability'); }) ; })); }); });