Replace the hand-written CharacterRepository fakes in the ViewModel and
UseCase unit tests with MockK mocks (coEvery / coVerify). This is a
deliberate showcase of MockK and intentionally diverges from the repo's
"prefer fakes over mocks" guidance.
- Add io.mockk:mockk 1.14.3 to the version catalog and the unit-test bundle;
add it explicitly to DomainModuleConventionPlugin (domain does not consume
the bundle).
- CharacterListViewModelTest: strict mockk, per-page coEvery stubs; the
paging/in-flight guards are expressed via coVerify(exactly = ...) and
coVerifyOrder instead of fake call counters.
- CharacterDetailViewModelTest: relaxed mockk so "missing id" needs no
stubbing; explicit coEvery elsewhere.
- GetCharactersPageUseCaseTest: mockk + coVerify replaces the inline fake.
- Move character()/characterDetails() fixtures to CharacterFixtures.kt and
delete FakeCharacterRepository.kt.
- NetworkCharacterRepositoryTest stays on Ktor MockEngine (MockK is for
Kotlin collaborator interfaces, not the HTTP transport).
Test CharacterListViewModel and CharacterDetailViewModel entirely through their
MVI surface with a FakeCharacterRepository (a fake, not a mock) and a directly
constructed SavedStateHandle, on StandardTestDispatcher. Coverage: happy path,
error -> UiText + snackbar Event, pagination end-reached, the in-flight and
duplicate next-page guards, process-death restore, and both branches of OnRetry.
Also a domain test for GetCharactersPageUseCase (delegation + error
propagation).
Add a domain UseCase (operator invoke) in :feature:characters:domain delegating
to CharacterRepository, and have CharacterListViewModel depend on it instead of
the repository directly. The UseCase is a deliberate thin pass-through that
documents the 'when to add a UseCase' convention (real logic / multi-source
composition vs. a single forwarded call).
Foundation milestone (REDI-78, REDI-79):
- Multi-module skeleton: :app, :core:{domain,data,presentation,design-system},
:feature:characters:{domain,data,presentation,presentation-compose,presentation-views},
:feature:about:presentation, plus the :build-logic composite build.
- gradle/libs.versions.toml as the single source of truth ([versions]/[libraries]/
[bundles]/[plugins]); no inline versions in any build file.
- Convention plugins: architecture.android.{application,library,feature,feature.views},
domain.module, compose, koin, ktor, kotlinx.serialization.
- Pure-Kotlin domain modules; presentation-compose uses android.feature;
presentation-views uses android.feature.views (ViewBinding on, Compose off);
the UI-agnostic :presentation has neither Compose nor Views deps.
- Toolchain: AGP 9.0.1, Kotlin 2.3.20, Gradle 9.1.0, compileSdk 36, minSdk 24, Java 17.
- Minimal MainActivity placeholder; CI (assembleDebug) via GitHub Actions.
Verified: ./gradlew projects lists the full tree and ./gradlew assemble is green.
