test: ViewModel unit test 인프라 추가 및 첫 테스트 작성

[unam98]

작업 배경

• AI 기반 개발/유지보수 시 회귀 버그를 수동 검증으로 잡기 어려워, ViewModel unit test 인프라를 도입해 안전망을 구축

변경 사항

영역	내용
gradle/libs.versions.toml, app/build.gradle	MockK, Turbine, kotlinx-coroutines-test 의존성 추가 (testImplementation)
MyPageViewModelTest.kt	LoadUserInfo 성공/실패, UpdateNickname 인텐트에 대한 상태 전이 테스트 3건
VisitorModeManagerTest.kt	access token 값에 따른 방문자 모드 판별 로직 테스트 4건 (mockkObject로 PreferenceManager 모킹, Robolectric 없이 plain JVM 테스트)

영향 범위

• 테스트 코드 및 테스트 의존성만 추가, 프로덕션 코드/런타임 동작 변경 없음
• 빌드 산출물(APK) 영향 없음 (testImplementation 스코프)

Test Plan

• ./gradlew :app:testDebugUnitTest 전체 통과 확인
• ./gradlew :app:assembleDebug 정상 빌드 확인
• 후속 화면(Compose UI Test, Paparazzi) 테스트 레이어 확장

🤖 Generated with Claude Code

Summary by CodeRabbit

• Tests

  • Added unit coverage for visitor mode behavior across different access token states.
  • Added view model tests for loading user info, error handling, and nickname updates.

• Chores

  • Expanded test tooling support to include mocking, coroutine testing, and flow testing libraries.

[coderabbitai]

📝 Walkthrough

Walkthrough

Three new test dependencies (mockk, turbine, kotlinx-coroutines-test) are added to the version catalog and app/build.gradle. Two new unit test files are introduced: VisitorModeManagerTest verifies isVisitorMode across four access token values, and MyPageViewModelTest covers success/failure LoadUserInfo state transitions and the UpdateNickname intent using StandardTestDispatcher and Turbine.

Changes

Unit test additions

Layer / File(s)	Summary
Test dependency setup gradle/libs.versions.toml, app/build.gradle	Adds mockk and turbine version entries to the catalog, declares library entries for mockk, turbine, and kotlinx-coroutines-test, and wires all three as testImplementation in app/build.gradle.
VisitorModeManager access token tests app/src/test/.../event/VisitorModeManagerTest.kt	Mocks PreferenceManager with mockk; four tests assert isVisitorMode returns true only for the "visitor" token and false for JWT, "none", and empty string values.
MyPageViewModel state and effect tests app/src/test/.../mypage/MyPageViewModelTest.kt	Uses StandardTestDispatcher and Turbine to test three scenarios: success path populates user fields with error=null, failure path emits "네트워크 오류 (unknown)" error and ShowError effect, and UpdateNickname updates the nickname field in state.

Sequence Diagram(s)

sequenceDiagram
  participant Test as MyPageViewModelTest
  participant VM as MyPageViewModel
  participant Repo as UserRepository (mock)

  Test->>VM: dispatch LoadUserInfo
  VM->>Repo: getUserInfo()
  Repo-->>VM: emit Result.success(userInfo)
  VM-->>Test: state(isLoading=false, user fields set, error=null)

  Test->>VM: dispatch LoadUserInfo (failure)
  VM->>Repo: getUserInfo()
  Repo-->>VM: throw RuntimeException
  VM-->>Test: state(isLoading=false, error="네트워크 오류 (unknown)")
  VM-->>Test: effect ShowError emitted

Loading

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 Hop hop, the tests now grow,
Mockk the token, watch it flow!
Visitor mode? True or false?
ViewModel state? No more flaws!
Turbine bubbles, coroutines play,
Bunny approves — ship it today! 🚀

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the PR’s main change: adding unit test infrastructure and initial tests.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch test/add-viewmodel-unit-test-infra

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[coderabbitai]

🧹 Nitpick comments (1)

app/src/test/java/com/runnect/runnect/presentation/mypage/MyPageViewModelTest.kt (1)

102-104: 🎯 Functional Correctness | 🔵 Trivial | ⚡ Quick win

Assert ShowError message payload as well.

This currently validates only the effect type; an incorrect message would still pass. Assert the emitted ShowError message matches the expected error string.

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In
`@app/src/test/java/com/runnect/runnect/presentation/mypage/MyPageViewModelTest.kt`
around lines 102 - 104, The MyPageViewModelTest assertion only checks that the
emitted effect is MyPageEffect.ShowError, so an incorrect message payload could
still pass. Update the test around the effectTurbine.awaitItem() check to also
verify the ShowError message matches the expected error string, using the
MyPageEffect.ShowError symbol to locate the assertion.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Nitpick comments:
In
`@app/src/test/java/com/runnect/runnect/presentation/mypage/MyPageViewModelTest.kt`:
- Around line 102-104: The MyPageViewModelTest assertion only checks that the
emitted effect is MyPageEffect.ShowError, so an incorrect message payload could
still pass. Update the test around the effectTurbine.awaitItem() check to also
verify the ShowError message matches the expected error string, using the
MyPageEffect.ShowError symbol to locate the assertion.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 1599d79c-2026-4a62-a622-466b45e80c2f

📥 Commits

Reviewing files that changed from the base of the PR and between 7c6ec2e and 79a3e37.

📒 Files selected for processing (4)

• app/build.gradle
• app/src/test/java/com/runnect/runnect/presentation/event/VisitorModeManagerTest.kt
• app/src/test/java/com/runnect/runnect/presentation/mypage/MyPageViewModelTest.kt
• gradle/libs.versions.toml