Verify mobile app launches and displays home screen

Preconditions (3)

Step 1: Launch the mobile app on the device

Step 2: Wait for the home screen to load

Step 3: Verify the home screen title is visible

Step 4: Verify the main menu button is present

Step 5: Close the app

✅ Expected Result: The app launches successfully, home screen title and main menu button are visible, and app closes without errors

Automation Requirements - Appium with Python unittest

Assertions Needed:

Home screen title is displayed

Main menu button is present

Best Practices:

Use explicit waits to wait for elements

Use accessibility IDs or resource IDs for locating elements

Close the app session properly after test

Automated Solution

Testing Fundamentals

import unittest
from appium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

class MobileAppLaunchTest(unittest.TestCase):
    def setUp(self):
        desired_caps = {
            "platformName": "Android",
            "deviceName": "Android Emulator",
            "appPackage": "com.example.myapp",
            "appActivity": ".MainActivity",
            "automationName": "UiAutomator2"
        }
        self.driver = webdriver.Remote('http://localhost:4723/wd/hub', desired_caps)
        self.wait = WebDriverWait(self.driver, 10)

    def test_home_screen_display(self):
        # Wait for home screen title to be visible
        home_title = self.wait.until(
            EC.visibility_of_element_located((By.ACCESSIBILITY_ID, "home_screen_title"))
        )
        self.assertTrue(home_title.is_displayed(), "Home screen title should be visible")

        # Verify main menu button is present
        main_menu_btn = self.wait.until(
            EC.presence_of_element_located((By.ACCESSIBILITY_ID, "main_menu_button"))
        )
        self.assertIsNotNone(main_menu_btn, "Main menu button should be present")

    def tearDown(self):
        self.driver.quit()

if __name__ == '__main__':
    unittest.main()

This test script uses Appium with Python's unittest framework to automate a mobile app launch test.

setUp(): Sets desired capabilities for Android emulator and app details, then starts the Appium driver and a wait helper.

test_home_screen_display(): Waits explicitly for the home screen title to appear using accessibility ID, asserts it is visible, then waits for the main menu button and asserts it is present.

tearDown(): Closes the app session properly after the test.

This approach uses explicit waits to avoid timing issues and uses accessibility IDs for reliable element location, following best practices for mobile test automation.

Common Mistakes - 3 Pitfalls

Using hardcoded sleep delays instead of explicit waits

Locating elements by fragile XPath expressions

Not closing the app session after test

Bonus Challenge

Now add data-driven testing with 3 different app activities to verify their launch

Show Hint