Question 1

How do Mock, Stub, and Fake differ in tests?

Accepted Answer

A Mock verifies interactions (who calls what, how many times, with which arguments). A Stub returns predefined responses without verification. A Fake is a simplified working implementation (e.g., in‑memory repository). Mocks emphasize behavior verification, Stubs support state verification, and Fakes provide lightweight realistic alternatives.

Question 2

How to use MockK for mocking in Kotlin?

Accepted Answer

MockK is Kotlin‑centric: mockk<T>() creates a double, every { ... } returns ... stubs responses, verify { ... } checks interactions. It supports coroutines (coEvery/coVerify), relaxed mocks, and argument capture via slot.

Question 3

What is TDD (Test-Driven Development)?

Accepted Answer

TDD means writing a test before the code and iterating Red‑Green‑Refactor: failing test, minimal code to pass, then refactor without changing behavior. Benefits: better coverage, more testable design, living documentation.

Android Testing Advanced

How do Mock, Stub, and Fake differ in tests?

Câu trả lời

How to use MockK for mocking in Kotlin?

Câu trả lời

What is TDD (Test-Driven Development)?

Câu trả lời

How to test Coroutines with runTest?

How to test Flow?

Các chủ đề phỏng vấn Android khác

Android Fundamentals

Android UI and Resources

Android Lifecycle

Android Navigation

Android Data Management

Android Networking

Android Testing

Android Gradle

Kotlin Language Essentials for Android

Room Database

Background Work

Jetpack Compose

Permissions and Device Features

Firebase for Android

Android MVVM Architecture

Advanced Android Networking

Kotlin Collections and Operators

Kotlin Coroutines and Flow

Android Dependency Injection

Android MVI Architecture

Android Clean Architecture

Android Compose Advanced

Android Performance and Monitoring

Android Security and Privacy

Android CI/CD and Release

Android UX and Form Factors

Nắm vững Android cho lần phỏng vấn tiếp theo