AAD Quality Assurance & Compliance 3 — Questions and Answers
Question 1: Which assertion library is recommended for readable test assertions in AndroidX Test projects?
- Truth (Correct answer)
- Hamcrest
- AssertJ
- JUnit Assert
Correct answer: Truth
Google's Truth library provides fluent, readable assertions and is the recommended choice in AndroidX Test documentation.
Question 2: What does the `@Rule` annotation with `ActivityScenarioRule` provide in an Espresso test?
- Automatically launches and tears down an Activity for each test (Correct answer)
- Mocks the Activity lifecycle callbacks
- Disables animations for the test Activity
- Grants all runtime permissions before the test
Correct answer: Automatically launches and tears down an Activity for each test
`ActivityScenarioRule` launches the specified Activity before each test and cleans it up afterward.
Question 3: Which lint check category in Android enforces accessibility guidelines such as missing content descriptions?
- Accessibility (Correct answer)
- Correctness
- Performance
- Internationalization
Correct answer: Accessibility
Android Lint's Accessibility category flags issues like missing `contentDescription` on ImageViews.
Question 4: When writing a ViewModel unit test, what is the recommended way to handle `viewModelScope` coroutines synchronously?
- Use TestCoroutineDispatcher / UnconfinedTestDispatcher and replace Main dispatcher (Correct answer)
- Use Thread.sleep() to wait for coroutines
- Annotate the test with @Coroutine
- Use runBlocking from the production code
Correct answer: Use TestCoroutineDispatcher / UnconfinedTestDispatcher and replace Main dispatcher
Replacing `Dispatchers.Main` with a `TestDispatcher` lets tests control coroutine execution synchronously.
Question 5: Which Play Store policy requires that apps collecting personal data from children comply with?
- Children's Online Privacy Protection Act (COPPA) (Correct answer)
- General Data Protection Regulation (GDPR) only
- California Consumer Privacy Act (CCPA) only
- Health Insurance Portability and Accountability Act (HIPAA)
Correct answer: Children's Online Privacy Protection Act (COPPA)
Apps directed at children must comply with COPPA, which restricts collection of personal data from users under 13.
Question 6: What is the effect of calling `Mockito.verify(mock, times(2)).someMethod()` in a unit test?
- Asserts that someMethod was called exactly twice on the mock (Correct answer)
- Stubs someMethod to return a value twice
- Throws an exception if someMethod is called more than twice
- Verifies someMethod will be called in the future
Correct answer: Asserts that someMethod was called exactly twice on the mock
`verify` with `times(2)` fails the test if `someMethod` was not invoked exactly two times on the mock object.
Question 7: Which section of the Google Play Console requires developers to complete a questionnaire about data collected by their app?
- Data Safety (Correct answer)
- Content Rating
- App Content
- Privacy Policy
Correct answer: Data Safety
The Data Safety section requires developers to disclose what data the app collects, shares, and how it is handled.
AAD Quality Assurance & Compliance 3
Which assertion library is recommended for readable test assertions in AndroidX Test projects?