angular-cn/aio/content/examples/cb-component-communication/e2e-spec.ts

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'use strict'; // necessary for es6 output in node
import { browser, element, by } from 'protractor';
describe('Component Communication Cookbook Tests', function () {
// Note: '?e2e' which app can read to know it is running in protractor
// e.g. `if (!/e2e/.test(location.search)) { ...`
beforeAll(function () {
browser.get('?e2e');
});
describe('Parent-to-child communication', function() {
// #docregion parent-to-child
// ...
let _heroNames = ['Mr. IQ', 'Magneta', 'Bombasto'];
let _masterName = 'Master';
it('should pass properties to children properly', function () {
let parent = element.all(by.tagName('hero-parent')).get(0);
let heroes = parent.all(by.tagName('hero-child'));
for (let i = 0; i < _heroNames.length; i++) {
let childTitle = heroes.get(i).element(by.tagName('h3')).getText();
let childDetail = heroes.get(i).element(by.tagName('p')).getText();
expect(childTitle).toEqual(_heroNames[i] + ' says:');
expect(childDetail).toContain(_masterName);
}
});
// ...
// #enddocregion parent-to-child
});
describe('Parent-to-child communication with setter', function() {
// #docregion parent-to-child-setter
// ...
it('should display trimmed, non-empty names', function () {
let _nonEmptyNameIndex = 0;
let _nonEmptyName = '"Mr. IQ"';
let parent = element.all(by.tagName('name-parent')).get(0);
let hero = parent.all(by.tagName('name-child')).get(_nonEmptyNameIndex);
let displayName = hero.element(by.tagName('h3')).getText();
expect(displayName).toEqual(_nonEmptyName);
});
it('should replace empty name with default name', function () {
let _emptyNameIndex = 1;
let _defaultName = '"<no name set>"';
let parent = element.all(by.tagName('name-parent')).get(0);
let hero = parent.all(by.tagName('name-child')).get(_emptyNameIndex);
let displayName = hero.element(by.tagName('h3')).getText();
expect(displayName).toEqual(_defaultName);
});
// ...
// #enddocregion parent-to-child-setter
});
describe('Parent-to-child communication with ngOnChanges', function() {
// #docregion parent-to-child-onchanges
// ...
// Test must all execute in this exact order
it('should set expected initial values', function () {
let actual = getActual();
let initialLabel = 'Version 1.23';
let initialLog = 'Initial value of major set to 1, Initial value of minor set to 23';
expect(actual.label).toBe(initialLabel);
expect(actual.count).toBe(1);
expect(actual.logs.get(0).getText()).toBe(initialLog);
});
it('should set expected values after clicking \'Minor\' twice', function () {
let repoTag = element(by.tagName('version-parent'));
let newMinorButton = repoTag.all(by.tagName('button')).get(0);
newMinorButton.click().then(function() {
newMinorButton.click().then(function() {
let actual = getActual();
let labelAfter2Minor = 'Version 1.25';
let logAfter2Minor = 'minor changed from 24 to 25';
expect(actual.label).toBe(labelAfter2Minor);
expect(actual.count).toBe(3);
expect(actual.logs.get(2).getText()).toBe(logAfter2Minor);
});
});
});
it('should set expected values after clicking \'Major\' once', function () {
let repoTag = element(by.tagName('version-parent'));
let newMajorButton = repoTag.all(by.tagName('button')).get(1);
newMajorButton.click().then(function() {
let actual = getActual();
let labelAfterMajor = 'Version 2.0';
let logAfterMajor = 'major changed from 1 to 2, minor changed from 25 to 0';
expect(actual.label).toBe(labelAfterMajor);
expect(actual.count).toBe(4);
expect(actual.logs.get(3).getText()).toBe(logAfterMajor);
});
});
function getActual() {
let versionTag = element(by.tagName('version-child'));
let label = versionTag.element(by.tagName('h3')).getText();
let ul = versionTag.element((by.tagName('ul')));
let logs = ul.all(by.tagName('li'));
return {
label: label,
logs: logs,
count: logs.count()
};
}
// ...
// #enddocregion parent-to-child-onchanges
});
describe('Child-to-parent communication', function() {
// #docregion child-to-parent
// ...
it('should not emit the event initially', function () {
let voteLabel = element(by.tagName('vote-taker'))
.element(by.tagName('h3')).getText();
expect(voteLabel).toBe('Agree: 0, Disagree: 0');
});
it('should process Agree vote', function () {
let agreeButton1 = element.all(by.tagName('my-voter')).get(0)
.all(by.tagName('button')).get(0);
agreeButton1.click().then(function() {
let voteLabel = element(by.tagName('vote-taker'))
.element(by.tagName('h3')).getText();
expect(voteLabel).toBe('Agree: 1, Disagree: 0');
});
});
it('should process Disagree vote', function () {
let agreeButton1 = element.all(by.tagName('my-voter')).get(1)
.all(by.tagName('button')).get(1);
agreeButton1.click().then(function() {
let voteLabel = element(by.tagName('vote-taker'))
.element(by.tagName('h3')).getText();
expect(voteLabel).toBe('Agree: 1, Disagree: 1');
});
});
// ...
// #enddocregion child-to-parent
});
// Can't run timer tests in protractor because
// interaction w/ zones causes all tests to freeze & timeout.
xdescribe('Parent calls child via local var', function() {
countDownTimerTests('countdown-parent-lv');
});
xdescribe('Parent calls ViewChild', function() {
countDownTimerTests('countdown-parent-vc');
});
function countDownTimerTests(parentTag: string) {
// #docregion countdown-timer-tests
// ...
it('timer and parent seconds should match', function () {
let parent = element(by.tagName(parentTag));
let message = parent.element(by.tagName('countdown-timer')).getText();
browser.sleep(10); // give `seconds` a chance to catchup with `message`
let seconds = parent.element(by.className('seconds')).getText();
expect(message).toContain(seconds);
});
it('should stop the countdown', function () {
let parent = element(by.tagName(parentTag));
let stopButton = parent.all(by.tagName('button')).get(1);
stopButton.click().then(function() {
let message = parent.element(by.tagName('countdown-timer')).getText();
expect(message).toContain('Holding');
});
});
// ...
// #enddocregion countdown-timer-tests
}
describe('Parent and children communicate via a service', function() {
// #docregion bidirectional-service
// ...
it('should announce a mission', function () {
let missionControl = element(by.tagName('mission-control'));
let announceButton = missionControl.all(by.tagName('button')).get(0);
announceButton.click().then(function () {
let history = missionControl.all(by.tagName('li'));
expect(history.count()).toBe(1);
expect(history.get(0).getText()).toMatch(/Mission.* announced/);
});
});
it('should confirm the mission by Lovell', function () {
testConfirmMission(1, 2, 'Lovell');
});
it('should confirm the mission by Haise', function () {
testConfirmMission(3, 3, 'Haise');
});
it('should confirm the mission by Swigert', function () {
testConfirmMission(2, 4, 'Swigert');
});
function testConfirmMission(buttonIndex: number, expectedLogCount: number, astronaut: string) {
let _confirmedLog = ' confirmed the mission';
let missionControl = element(by.tagName('mission-control'));
let confirmButton = missionControl.all(by.tagName('button')).get(buttonIndex);
confirmButton.click().then(function () {
let history = missionControl.all(by.tagName('li'));
expect(history.count()).toBe(expectedLogCount);
expect(history.get(expectedLogCount - 1).getText()).toBe(astronaut + _confirmedLog);
});
}
// ...
// #enddocregion bidirectional-service
});
});