Mobile testing types in Testing Fundamentals - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Identify the type of mobile testing

Which type of mobile testing focuses on verifying the app's behavior on different network conditions like 3G, 4G, and Wi-Fi?

A Performance Testing

B Usability Testing

C Network Testing

D Compatibility Testing

💡 Hint

Think about testing how the app works with different internet connections.

Network Testing checks how the mobile app performs under various network conditions such as 3G, 4G, Wi-Fi, or poor connectivity.

❓ Predict Output

intermediate

Output of test result for battery usage check

Given a test script that measures battery consumption of a mobile app, what is the expected output if the app uses 15% battery in 1 hour, exceeding the 10% limit?

Testing Fundamentals

battery_usage = 15
limit = 10
result = 'Pass' if battery_usage <= limit else 'Fail'
print(result)

A 15

B Error

C Pass

D Fail

💡 Hint

Check if battery usage is within the allowed limit.

Since 15% is greater than the 10% limit, the test result is 'Fail'.

❓ assertion

advanced

Correct assertion for screen orientation test

Which assertion correctly verifies that the mobile app screen orientation changed to landscape mode?

Testing Fundamentals

current_orientation = get_screen_orientation()  # returns 'portrait' or 'landscape'

A assert current_orientation = 'landscape'

B assert current_orientation == 'landscape'

C assert current_orientation != 'portrait'

D assert current_orientation is 'landscape'

💡 Hint

Use the correct equality operator in assertions.

Option B uses the correct equality operator '==' to check if orientation is 'landscape'. Option B uses assignment '=' which is invalid in assert. Option B only checks not portrait but could be other values. Option B uses 'is' which is not recommended for string comparison.

🔧 Debug

advanced

Find the bug in this mobile app test locator

This locator is used to find a button by accessibility id in a mobile app test. What is the bug?

Testing Fundamentals

button = driver.find_element_by_accessibility_id('submitBtn')

A Method find_element_by_accessibility_id is deprecated, should use find_element('accessibility id', 'submitBtn')

B No bug, code is correct

C Accessibility id should be 'submit_btn' with underscore

D Should use find_element_by_id instead

💡 Hint

Check if the method used is current in modern mobile testing frameworks.

The method find_element_by_accessibility_id is deprecated in recent versions. The correct usage is find_element with locator strategy 'accessibility id'.

❓ framework

expert

Choosing the best mobile testing framework for cross-platform automation

Which mobile testing framework supports both Android and iOS automation using a single API and is widely used for cross-platform testing?

A Appium

B XCUITest

C Espresso

D Robotium

💡 Hint

Look for a framework that works on both Android and iOS.

Appium supports both Android and iOS automation with a single API, making it ideal for cross-platform mobile testing. Espresso is Android-only, XCUITest is iOS-only, and Robotium is Android-only.

Practice

1. Which type of mobile testing focuses on checking if the app works correctly on different devices and operating systems?

easy

A. Compatibility Testing

B. Performance Testing

C. Security Testing

D. Usability Testing

Solution

1. Step 1: Understand the goal of compatibility testing

   Compatibility testing ensures the app works well across various devices, OS versions, and screen sizes.

2. Step 2: Match the testing type to the description

   Since the question asks about different devices and OS, compatibility testing fits best.

3. Final Answer:

   Compatibility Testing -> Option A

4. Quick Check:

   Different devices = Compatibility Testing [OK]

Hint: Devices and OS differences? Think compatibility testing [OK]

Common Mistakes:

• Confusing performance testing with compatibility testing
• Choosing usability testing which focuses on user experience
• Selecting security testing which checks app safety

2. Which of the following is the correct syntax to describe a test that measures how fast a mobile app responds under load?

easy

A. Security Testing

B. Performance Testing

C. Functional Testing

D. Compatibility Testing

Solution

1. Step 1: Identify the testing type for speed and load

   Performance testing measures app speed, responsiveness, and stability under load.

2. Step 2: Match the correct testing type

   Performance testing fits the description of measuring how fast the app responds.

3. Final Answer:

   Performance Testing -> Option B

4. Quick Check:

   Speed under load = Performance Testing [OK]

Hint: Speed and load? Choose performance testing [OK]

Common Mistakes:

• Mixing functional testing with performance testing
• Confusing security testing with performance
• Selecting compatibility testing which is about devices

3. Consider this code snippet describing a mobile test scenario:

test_scenario = {
  "type": "Security Testing",
  "check": "Data encryption and secure login"
}
print(test_scenario["type"])

What will be the output when this code runs?

medium

A. "Security Testing"

B. "Data encryption and secure login"

C. KeyError

D. None

Solution

1. Step 1: Understand dictionary access in Python

   Accessing test_scenario["type"] returns the value for the key "type" which is "Security Testing".

2. Step 2: Confirm the printed output

   The print statement outputs the string "Security Testing" exactly as stored.

3. Final Answer:

   "Security Testing" -> Option A

4. Quick Check:

   Dictionary key 'type' = "Security Testing" [OK]

Hint: Print dictionary key value directly for output [OK]

Common Mistakes:

• Confusing key and value causing KeyError
• Printing the wrong key's value
• Assuming None if key missing

4. A tester wrote this test step for mobile app testing:

1. Open app
2. Enter username and password
3. Click login button
4. Verify user is logged in

Which type of mobile testing is this example missing?

medium

A. Compatibility Testing

B. Usability Testing

C. Security Testing

D. Performance Testing

Solution

1. Step 1: Analyze the test steps

   The steps check basic login functionality but do not measure speed or load.

2. Step 2: Identify missing testing type

   Performance testing, which measures speed and responsiveness, is missing here.

3. Final Answer:

   Performance Testing -> Option D

4. Quick Check:

   Speed check missing = Performance Testing [OK]

Hint: Check if speed/load tests are included for performance [OK]

Common Mistakes:

• Assuming security testing is covered by login steps
• Confusing usability with performance
• Ignoring compatibility which is about devices

5. You want to test a mobile app's behavior when the network connection is lost during a purchase. Which combination of mobile testing types should you apply?

hard

A. Functional Testing and Compatibility Testing

B. Performance Testing and Usability Testing

C. Functional Testing and Network Testing

D. Security Testing and Performance Testing

Solution

1. Step 1: Identify the scenario requirements

   The test involves app function during network loss, so functional and network testing are relevant.

2. Step 2: Match testing types to scenario

   Functional testing checks if purchase works correctly; network testing simulates connection loss.

3. Final Answer:

   Functional Testing and Network Testing -> Option C

4. Quick Check:

   Network loss + function = Functional + Network Testing [OK]

Hint: Network issues? Combine functional and network testing [OK]

Common Mistakes:

• Choosing compatibility which is about devices, not network
• Confusing performance with network testing
• Ignoring network testing for connection problems