Meshtastic-Android/core/database
James Rich 2afb82b600 test: migrate MigrationTest to runTest and add missing repository fakes
Part A — runBlocking → runTest
- Migrated all 5 runBlocking sites in core/database MigrationTest
  (@Before + 4 @Test bodies) to kotlinx.coroutines.test.runTest so
  test dispatchers are virtual-time aware and cancellation semantics
  match the rest of the suite.
- Left DatabaseManagerLegacyCleanupTest on runBlocking: it polls with
  delay(100) for async cleanup that runs on Dispatchers.IO. runTest's
  virtual-time delay would collapse instantly and race the real IO
  cleanup, so runBlocking is the correct choice there.

Part B — missing repository fakes
Added five in-memory fakes in core:testing (pure Kotlin, MutableStateFlow
backed) that implement their repository interface exactly:
- FakeDeviceHardwareRepository      (DeviceHardwareRepository)
- FakeFirmwareReleaseRepository     (FirmwareReleaseRepository)
- FakeQuickChatActionRepository     (QuickChatActionRepository)
- FakeTracerouteSnapshotRepository  (TracerouteSnapshotRepository)
- FakeRadioConfigRepository         (RadioConfigRepository)

Each fake is exercised by a new test in
core/testing/src/commonTest/kotlin/.../RepositoryFakesTest.kt:
upsert/delete/reorder flows for quick-chat, seeded lookups +
call-recording for device hardware, stable/alpha emission for
firmware releases, snapshot round-trips for traceroute, and
channel-set mutations for radio config. PacketRepository was
skipped — 40+ members and a FakePacketRepository helper already
exists for informal use; left for a focused follow-up.

Validation (all green):
  ./gradlew spotlessApply spotlessCheck
  ./gradlew :core:testing:jvmTest :core:database:testAndroid
  ./gradlew detekt kmpSmokeCompile

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-17 11:24:15 -05:00
..
schemas/org.meshtastic.core.database.MeshtasticDatabase chore: KMP audit — commonize code, centralize utilities, eliminate dead abstractions (#5133) 2026-04-15 02:17:50 +00:00
src test: migrate MigrationTest to runTest and add missing repository fakes 2026-04-17 11:24:15 -05:00
build.gradle.kts fix: clean up flaky, duplicated, and misplaced tests; remove redundant deps (#5048) 2026-04-10 19:46:45 +00:00
detekt-baseline.xml refactor: migrate core modules to Kotlin Multiplatform and consolidat… (#4735) 2026-03-06 22:06:50 +00:00
README.md refactor: BLE transport and UI for Kotlin Multiplatform unification (#4911) 2026-03-25 02:15:51 +00:00

:core:database

This module provides the local Room database persistence layer for the application using Room Kotlin Multiplatform (KMP).

Key Components

  • MeshtasticDatabase: The main Room database class, defined in commonMain.
  • DAOs (Data Access Objects):
    • NodeInfoDao: Manages storage and retrieval of node information (NodeEntity). Contains critical logic for handling Public Key Conflict (PKC) resolution and preventing identity wiping attacks.
    • PacketDao: Handles storage of mesh packets, including text messages, waypoints, and reactions.
  • Entities:
    • NodeEntity: Represents a node on the mesh.
    • Packet: Represents a stored packet.
    • ReactionEntity: Represents emoji reactions to packets.

Security Considerations

Public Key Conflict (PKC) Handling

The NodeInfoDao implements specific logic to protect against impersonation and "wipe" attacks:

  • Wipe Protection: Receiving an is_licensed=true packet (which normally clears the public key for compliance) will not clear an existing valid public key if one is already known. This prevents attackers from sending fake licensed packets to wipe keys from the DB.
  • Conflict Detection: If a new key arrives for an existing node ID that conflicts with a known valid key, the key is set to ERROR_BYTE_STRING to flag the potential impersonation.

Module dependency graph

graph TB
  :core:database[database]:::kmp-library

classDef android-application fill:#CAFFBF,stroke:#000,stroke-width:2px,color:#000;
classDef android-application-compose fill:#CAFFBF,stroke:#000,stroke-width:2px,color:#000;
classDef compose-desktop-application fill:#CAFFBF,stroke:#000,stroke-width:2px,color:#000;
classDef android-feature fill:#FFD6A5,stroke:#000,stroke-width:2px,color:#000;
classDef android-library fill:#9BF6FF,stroke:#000,stroke-width:2px,color:#000;
classDef android-library-compose fill:#9BF6FF,stroke:#000,stroke-width:2px,color:#000;
classDef android-test fill:#A0C4FF,stroke:#000,stroke-width:2px,color:#000;
classDef jvm-library fill:#BDB2FF,stroke:#000,stroke-width:2px,color:#000;
classDef kmp-feature fill:#FFD6A5,stroke:#000,stroke-width:2px,color:#000;
classDef kmp-library-compose fill:#FFC1CC,stroke:#000,stroke-width:2px,color:#000;
classDef kmp-library fill:#FFC1CC,stroke:#000,stroke-width:2px,color:#000;
classDef unknown fill:#FFADAD,stroke:#000,stroke-width:2px,color:#000;