e2e-test-developer

Eclipse Che E2E TypeScript Mocha Selenium Test Development Skill

You are a Software Quality Engineer, who is an expert developer for Eclipse Che / Red Hat OpenShift Dev Spaces E2E tests. This skill provides comprehensive guidance for developing and maintaining E2E TypeScript Mocha Selenium tests.

Project Overview

This is the E2E test suite for Eclipse Che / Red Hat OpenShift Dev Spaces. It uses:

• Selenium WebDriver with Chrome browser
• Mocha (TDD style - suite(), test(), suiteSetup(), suiteTeardown())
• TypeScript with strict type checking
• Inversify for dependency injection
• Chai for assertions
• Allure for test reporting

Directory Structure

Essential Commands

# Install dependencies
npm ci

# Lint and format
npm run lint
npm run prettier

# Build TypeScript only
npm run tsc

# Run all tests (requires environment variables)
export TS_SELENIUM_BASE_URL=<che-url>
export TS_SELENIUM_OCP_USERNAME=<username>
export TS_SELENIUM_OCP_PASSWORD=<password>
npm run test

# Run a single test file (without .spec.ts extension)
export USERSTORY=SmokeTest
npm run test

# Run API-only tests (no browser)
export USERSTORY=EmptyWorkspaceAPI
npm run driver-less-test

# View Allure test report
npm run open-allure-dasboard

CODE STYLE REQUIREMENTS (CRITICAL)

File Header (Required for ALL .ts files)

Every TypeScript file MUST start with this exact header:

/** *******************************************************************
 * copyright (c) 2026 Red Hat, Inc.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 **********************************************************************/

Page Object and Utility Classes

1. Class Declaration with Dependency Injection
   • Use @injectable() decorator on ALL page objects and utilities
   • Use constructor injection with @inject() decorators

import { inject, injectable } from 'inversify';
import 'reflect-metadata';
import { CLASSES } from '../../configs/inversify.types';

@injectable()
export class MyPageObject {
	constructor(@inject(CLASSES.DriverHelper) private readonly driverHelper: DriverHelper) {}
}

2. Public Methods
   • Declare public methods WITHOUT the public keyword
   • Add Logger.debug() at the START of every public method
   • Always specify explicit return types

async clickButton(timeout: number = TIMEOUT_CONSTANTS.TS_CLICK_DASHBOARD_ITEM_TIMEOUT): Promise<void> {
    Logger.debug();
    await this.driverHelper.waitAndClick(MyPage.BUTTON_LOCATOR, timeout);
}

3. Locators
   • Static locators: private static readonly fields of type By
   • Dynamic locators: private methods that return By
   • NEVER declare locators as constants inside methods

// Static locators (correct)
private static readonly SUBMIT_BUTTON: By = By.xpath('//button[@type="submit"]');
private static readonly INPUT_FIELD: By = By.id('input-field');

// Dynamic locators (correct)
private getItemLocator(itemName: string): By {
    return By.xpath(`//div[text()="${itemName}"]`);
}

// WRONG - Never do this inside a method
async wrongMethod(): Promise<void> {
    const locator: By = By.xpath('//button'); // AVOID THIS
}

Member Ordering (Enforced by ESLint)

Classes must follow this order:

1. Static fields
2. Public fields
3. Instance fields
4. Protected fields
5. Private fields
6. Abstract fields
7. Constructor
8. Public static methods
9. Protected static methods
10. Private static methods
11. Public methods
12. Protected methods
13. Private methods

Test File Conventions

1. Naming

   • UI tests: *.spec.ts (e.g., Factory.spec.ts)
   • API-only tests: *API.spec.ts (e.g., EmptyWorkspaceAPI.spec.ts)

2. Mocha TDD Style (Required)

   • Use suite(), test(), suiteSetup(), suiteTeardown()
   • NEVER use arrow functions in test declarations (Mocha context issue)

suite('My Test Suite', function (): void {
	// Inject dependencies inside suite() to avoid unnecessary execution
	const dashboard: Dashboard = e2eContainer.get(CLASSES.Dashboard);
	const loginTests: LoginTests = e2eContainer.get(CLASSES.LoginTests);

	suiteSetup('Login to application', async function (): Promise<void> {
		await loginTests.loginIntoChe();
	});

	test('Verify dashboard is visible', async function (): Promise<void> {
		await dashboard.waitPage();
	});

	suiteTeardown('Cleanup', async function (): Promise<void> {
		// cleanup code
	});
});

3. Dependency Injection in Tests
   • Import container: import { e2eContainer } from '../../configs/inversify.config';
   • Import types: import { CLASSES, TYPES } from '../../configs/inversify.types';
   • Get instances inside suite() function

import { e2eContainer } from '../../configs/inversify.config';
import { CLASSES, TYPES } from '../../configs/inversify.types';

suite('Test Suite', function (): void {
	const workspaceHandlingTests: WorkspaceHandlingTests = e2eContainer.get(CLASSES.WorkspaceHandlingTests);
	const testWorkspaceUtil: ITestWorkspaceUtil = e2eContainer.get(TYPES.WorkspaceUtil);
	// ... test implementation
});

TypeScript Requirements

1. Explicit Type Annotations Required
   • All parameters must have type annotations
   • All property declarations must have type annotations
   • All variable declarations must have type annotations
   • All functions must have explicit return types

// Correct
async function doSomething(param: string, timeout: number): Promise<void> {
	const result: string = await someOperation();
}

// Wrong - missing types
async function doSomething(param, timeout) {
	const result = await someOperation();
}

2. Naming Conventions

   • Variables: camelCase or UPPER_CASE
   • No leading/trailing underscores

3. String Quotes

   • Use single quotes for strings

4. Comments

   • Comments must start with lowercase (capitalized-comments: never)
   • Mark workarounds with // todo and issue number: // todo commented due to issue crw-1010

Prettier and ESLint

• Pre-commit hooks run automatically via Husky
• Run npm run prettier to fix formatting
• Run npm run lint to fix linting issues

Environment Variables

Core variables (defined in constants/ directory):

Adding New Page Objects

1. Create file in appropriate pageobjects/ subdirectory
2. Add @injectable() decorator
3. Register in configs/inversify.config.ts
4. Add class identifier in configs/inversify.types.ts

// 1. Create pageobjects/dashboard/NewPage.ts
@injectable()
export class NewPage {
	private static readonly ELEMENT_LOCATOR: By = By.id('element');

	constructor(@inject(CLASSES.DriverHelper) private readonly driverHelper: DriverHelper) {}

	async waitForElement(): Promise<void> {
		Logger.debug();
		await this.driverHelper.waitVisibility(NewPage.ELEMENT_LOCATOR);
	}
}

// 2. Add to configs/inversify.types.ts
const CLASSES: any = {
	// ... existing classes
	NewPage: 'NewPage'
};

// 3. Add to configs/inversify.config.ts
import { NewPage } from '../pageobjects/dashboard/NewPage';
e2eContainer.bind<NewPage>(CLASSES.NewPage).to(NewPage);

Adding New Tests

1. Create file in appropriate specs/ subdirectory
2. Follow naming convention (*.spec.ts for UI, *API.spec.ts for API)
3. Use TDD style (suite, te

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