Mobile app testing

Skill VRIL-LABS/skill-jam/skills/ai-ml/claude-skills-main/claude-skills-main/plugins/mobile-app-testing/skills/mobile-app-testing

Mobile app testing with unit tests, UI automation, performance testing. Use for test infrastructure, E2E tests, testing standards, or encountering test framework setup, device farms, flaky tests, platform-specific test errors.From its SKILL.md

Install

npx -y skills add VRIL-LABS/skill-jam --skill mobile-app-testing

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SKILL.md

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Mobile App Testing

Implement comprehensive testing strategies for mobile applications.

Testing Pyramid

Level	Tools	Coverage
Unit	Jest, XCTest, JUnit	70%
Integration	Detox, Espresso	20%
E2E	Appium, Detox	10%

React Native (Jest + Detox)

// Unit test
describe('CartService', () => {
  it('calculates total correctly', () => {
    const cart = new CartService();
    cart.addItem({ price: 10, quantity: 2 });
    expect(cart.getTotal()).toBe(20);
  });
});

// E2E test (Detox)
describe('Login flow', () => {
  beforeEach(async () => {
    await device.reloadReactNative();
  });

  it('should login successfully', async () => {
    await element(by.id('email-input')).typeText('[email protected]');
    await element(by.id('password-input')).typeText('password123');
    await element(by.id('login-button')).tap();
    await expect(element(by.id('dashboard'))).toBeVisible();
  });
});

iOS (XCTest)

func testLoginSuccess() {
    let app = XCUIApplication()
    app.launch()

    app.textFields["email"].tap()
    app.textFields["email"].typeText("[email protected]")
    app.secureTextFields["password"].typeText("password123")
    app.buttons["Login"].tap()

    XCTAssertTrue(app.staticTexts["Welcome"].exists)
}

Android (Espresso)

@Test
fun loginSuccess() {
    onView(withId(R.id.email)).perform(typeText("[email protected]"))
    onView(withId(R.id.password)).perform(typeText("password123"))
    onView(withId(R.id.loginButton)).perform(click())
    onView(withId(R.id.dashboard)).check(matches(isDisplayed()))
}

Best Practices

Test business logic first (unit tests)
Mock external dependencies
Test both success and failure paths
Automate critical user flows
Maintain >80% code coverage
Test on real devices periodically

Avoid

Testing implementation details
Hardcoded test data
Interdependent tests
Skipping error case testing

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.