Какими инструментами и методами вы пользуетесь для поддержания качества кода?

Static Analysis:

• KtLint (Kotlin linter)
• Detekt (Static analysis tool for Kotlin)
• Android Lint (Built-in Android static analysis)

Unit Testing:

• JUnit 5 (Testing framework)
• Mockito/MockK (Mocking libraries)
• Truth/AssertJ (Assertion libraries)

// Пример Unit теста с JUnit 5 и MockK
class MyViewModelTest {

    @MockK
    lateinit var repository: MyRepository

    @BeforeEach
    fun setUp() = MockKAnnotations.init(this)

    @Test
    fun `getData should return expected data`() {
        // arrange
        val expectedData = listOf("item1", "item2")
        coEvery { repository.getData() } returns expectedData

        val viewModel = MyViewModel(repository)

        // act
        val actualData = viewModel.getData()

        // assert
        assertEquals(expectedData, actualData)
    }
}

Integration Testing:

• AndroidX Test (Testing framework for Android)
• Espresso (UI testing framework)
• MockWebServer (Mocking HTTP responses)

// Пример Espresso теста
@RunWith(AndroidJUnit4::class)
@LargeTest
class MainActivityInstrumentedTest {

    @get:Rule
    val activityRule = activityScenarioRule<MainActivity>()

    @Test
    fun listItemIsDisplayed() {
        // Type text into the EditText and press button
        onView(withId(R.id.editText)).perform(typeText("Test Item"), closeSoftKeyboard())
        onView(withId(R.id.addButton)).perform(click())

        // Check if the item is in the list
        onView(withText("Test Item")).check(matches(isDisplayed()))
    }
}

Dependency Injection:

• Hilt (Recommended dependency injection library for Android)

Code Reviews: Regularly participate in and conduct code reviews to catch issues early and share knowledge.

Continuous Integration (CI): Utilize CI pipelines (e.g., GitHub Actions, GitLab CI, Jenkins) to automatically run tests and static analysis checks on every commit.

Coding Conventions: Adhere to established coding conventions (e.g., Kotlin style guide) for consistency and readability.

Version Control: Use Git with a branching strategy (e.g., Gitflow) for managing code changes.

Documentation: Maintain clean and concise code documentation and external documentation where necessary.

Defensive Programming: Implement checks for nulls, invalid inputs, and handle potential errors gracefully.