test: migrate MigrationTest to runTest and add missing repository fakes (#5171)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.pr5167.diff

@@ -0,0 +1,295 @@
+diff --git a/core/common/src/commonMain/kotlin/org/meshtastic/core/common/di/ApplicationCoroutineScope.kt b/core/common/src/commonMain/kotlin/org/meshtastic/core/common/di/ApplicationCoroutineScope.kt
+new file mode 100644
+index 0000000000..2a27b96906
+--- /dev/null
++++ b/core/common/src/commonMain/kotlin/org/meshtastic/core/common/di/ApplicationCoroutineScope.kt
+@@ -0,0 +1,39 @@
++/*
++ * Copyright (c) 2026 Meshtastic LLC
++ *
++ * This program is free software: you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation, either version 3 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
++ */
++package org.meshtastic.core.common.di
++
++import kotlinx.coroutines.CoroutineScope
++import kotlinx.coroutines.SupervisorJob
++import org.koin.core.annotation.Single
++import org.meshtastic.core.common.util.ioDispatcher
++
++/**
++ * A process-wide [CoroutineScope] that outlives individual ViewModels and UI components.
++ *
++ * Use this scope for fire-and-forget cleanup work that must continue after a ViewModel's own scope has been cancelled
++ * (for example, deleting temporary files in `onCleared()`). Backed by a [SupervisorJob] so failures in one child do not
++ * cancel siblings, and by [ioDispatcher] so work runs off the main thread.
++ *
++ * Prefer scoping work to a more specific scope (like `viewModelScope`) whenever possible; this scope is an escape hatch
++ * and should be used sparingly.
++ */
++interface ApplicationCoroutineScope : CoroutineScope
++
++@Single(binds = [ApplicationCoroutineScope::class])
++internal class ApplicationCoroutineScopeImpl : ApplicationCoroutineScope {
++    override val coroutineContext = SupervisorJob() + ioDispatcher
++}
+diff --git a/core/ui/src/androidMain/kotlin/org/meshtastic/core/ui/util/PlatformUtils.kt b/core/ui/src/androidMain/kotlin/org/meshtastic/core/ui/util/PlatformUtils.kt
+index 231c84d401..5365ab95e2 100644
+--- a/core/ui/src/androidMain/kotlin/org/meshtastic/core/ui/util/PlatformUtils.kt
++++ b/core/ui/src/androidMain/kotlin/org/meshtastic/core/ui/util/PlatformUtils.kt
+@@ -37,12 +37,12 @@ import androidx.lifecycle.compose.LifecycleEventEffect
+ import co.touchlab.kermit.Logger
+ import com.eygraber.uri.toAndroidUri
+ import com.eygraber.uri.toKmpUri
+-import kotlinx.coroutines.Dispatchers
+ import kotlinx.coroutines.withContext
+ import org.jetbrains.compose.resources.StringResource
+ import org.jetbrains.compose.resources.getString
+ import org.meshtastic.core.common.gpsDisabled
+ import org.meshtastic.core.common.util.CommonUri
++import org.meshtastic.core.common.util.ioDispatcher
+ import java.net.URLEncoder
+ 
+ @Composable
+@@ -146,7 +146,7 @@ actual fun rememberReadTextFromUri(): suspend (uri: CommonUri, maxChars: Int) ->
+     val context = LocalContext.current
+     return remember(context) {
+         { uri, maxChars ->
+-            withContext(Dispatchers.IO) {
++            withContext(ioDispatcher) {
+                 @Suppress("TooGenericExceptionCaught")
+                 try {
+                     val androidUri = uri.toAndroidUri()
+diff --git a/core/ui/src/jvmMain/kotlin/org/meshtastic/core/ui/util/PlatformUtils.kt b/core/ui/src/jvmMain/kotlin/org/meshtastic/core/ui/util/PlatformUtils.kt
+index 031e1fe35d..a938f92ea6 100644
+--- a/core/ui/src/jvmMain/kotlin/org/meshtastic/core/ui/util/PlatformUtils.kt
++++ b/core/ui/src/jvmMain/kotlin/org/meshtastic/core/ui/util/PlatformUtils.kt
+@@ -20,10 +20,10 @@ package org.meshtastic.core.ui.util
+ 
+ import androidx.compose.runtime.Composable
+ import co.touchlab.kermit.Logger
+-import kotlinx.coroutines.Dispatchers
+ import kotlinx.coroutines.withContext
+ import org.jetbrains.compose.resources.StringResource
+ import org.meshtastic.core.common.util.CommonUri
++import org.meshtastic.core.common.util.ioDispatcher
+ import java.awt.Desktop
+ import java.awt.FileDialog
+ import java.awt.Frame
+@@ -89,7 +89,7 @@ actual fun rememberOpenFileLauncher(onUriReceived: (CommonUri?) -> Unit): (mimeT
+ /** JVM — Reads text from a file URI. */
+ @Composable
+ actual fun rememberReadTextFromUri(): suspend (uri: CommonUri, maxChars: Int) -> String? = { uri, maxChars ->
+-    withContext(Dispatchers.IO) {
++    withContext(ioDispatcher) {
+         @Suppress("TooGenericExceptionCaught")
+         try {
+             val file = File(URI(uri.toString()))
+diff --git a/feature/firmware/src/commonMain/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModel.kt b/feature/firmware/src/commonMain/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModel.kt
+index dc1c459716..f8ff9fcac8 100644
+--- a/feature/firmware/src/commonMain/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModel.kt
++++ b/feature/firmware/src/commonMain/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModel.kt
+@@ -35,6 +35,7 @@ import kotlinx.coroutines.launch
+ import kotlinx.coroutines.withTimeoutOrNull
+ import org.jetbrains.compose.resources.StringResource
+ import org.koin.core.annotation.KoinViewModel
++import org.meshtastic.core.common.di.ApplicationCoroutineScope
+ import org.meshtastic.core.common.util.CommonUri
+ import org.meshtastic.core.common.util.safeCatching
+ import org.meshtastic.core.database.entity.FirmwareRelease
+@@ -91,6 +92,7 @@ class FirmwareUpdateViewModel(
+     private val firmwareUpdateManager: FirmwareUpdateManager,
+     private val usbManager: FirmwareUsbManager,
+     private val fileHandler: FirmwareFileHandler,
++    private val applicationScope: ApplicationCoroutineScope,
+ ) : ViewModel() {
+ 
+     private val _state = MutableStateFlow<FirmwareUpdateState>(FirmwareUpdateState.Idle)
+@@ -124,12 +126,10 @@ class FirmwareUpdateViewModel(
+ 
+     override fun onCleared() {
+         super.onCleared()
+-        // viewModelScope is already cancelled when onCleared() runs, so launch cleanup in a
+-        // standalone scope. SupervisorJob prevents the coroutine from propagating failures to a
+-        // shared parent, and NonCancellable on the launch keeps cleanup running even if the scope
+-        // is cancelled concurrently.
+-        @OptIn(kotlinx.coroutines.DelicateCoroutinesApi::class)
+-        kotlinx.coroutines.GlobalScope.launch(NonCancellable) {
++        // viewModelScope is already cancelled when onCleared() runs, so launch cleanup on the
++        // application-wide scope (SupervisorJob + ioDispatcher). NonCancellable keeps cleanup
++        // running even if something tries to cancel it mid-flight.
++        applicationScope.launch(NonCancellable) {
+             tempFirmwareFile = cleanupTemporaryFiles(fileHandler, tempFirmwareFile)
+         }
+     }
+diff --git a/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateIntegrationTest.kt b/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateIntegrationTest.kt
+index 4c48a1ced5..030d84effd 100644
+--- a/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateIntegrationTest.kt
++++ b/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateIntegrationTest.kt
+@@ -108,6 +108,7 @@ class FirmwareUpdateIntegrationTest {
+         firmwareUpdateManager,
+         usbManager,
+         fileHandler,
++        TestApplicationCoroutineScope(testDispatcher),
+     )
+ 
+     @Test
+diff --git a/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModelTest.kt b/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModelTest.kt
+index 7032ed4088..a8eddff838 100644
+--- a/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModelTest.kt
++++ b/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModelTest.kt
+@@ -124,6 +124,7 @@ class FirmwareUpdateViewModelTest {
+         firmwareUpdateManager,
+         usbManager,
+         fileHandler,
++        TestApplicationCoroutineScope(testDispatcher),
+     )
+ 
+     @Test
+diff --git a/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/TestApplicationCoroutineScope.kt b/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/TestApplicationCoroutineScope.kt
+new file mode 100644
+index 0000000000..3ef5c44ef4
+--- /dev/null
++++ b/feature/firmware/src/commonTest/kotlin/org/meshtastic/feature/firmware/TestApplicationCoroutineScope.kt
+@@ -0,0 +1,26 @@
++/*
++ * Copyright (c) 2026 Meshtastic LLC
++ *
++ * This program is free software: you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation, either version 3 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
++ */
++package org.meshtastic.feature.firmware
++
++import kotlinx.coroutines.CoroutineDispatcher
++import kotlinx.coroutines.CoroutineScope
++import kotlinx.coroutines.SupervisorJob
++import org.meshtastic.core.common.di.ApplicationCoroutineScope
++
++internal class TestApplicationCoroutineScope(dispatcher: CoroutineDispatcher) :
++    ApplicationCoroutineScope,
++    CoroutineScope by CoroutineScope(SupervisorJob() + dispatcher)
+diff --git a/feature/firmware/src/jvmTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModelFileTest.kt b/feature/firmware/src/jvmTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModelFileTest.kt
+index acb1545bdd..23a0d03ab2 100644
+--- a/feature/firmware/src/jvmTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModelFileTest.kt
++++ b/feature/firmware/src/jvmTest/kotlin/org/meshtastic/feature/firmware/FirmwareUpdateViewModelFileTest.kt
+@@ -116,6 +116,7 @@ class FirmwareUpdateViewModelFileTest {
+         firmwareUpdateManager,
+         usbManager,
+         fileHandler,
++        TestApplicationCoroutineScope(testDispatcher),
+     )
+ 
+     // -----------------------------------------------------------------------
+diff --git a/feature/settings/src/androidMain/kotlin/org/meshtastic/feature/settings/debugging/LogExporter.kt b/feature/settings/src/androidMain/kotlin/org/meshtastic/feature/settings/debugging/LogExporter.kt
+index c251b4d5ef..315ad1da85 100644
+--- a/feature/settings/src/androidMain/kotlin/org/meshtastic/feature/settings/debugging/LogExporter.kt
++++ b/feature/settings/src/androidMain/kotlin/org/meshtastic/feature/settings/debugging/LogExporter.kt
+@@ -27,6 +27,7 @@ import co.touchlab.kermit.Logger
+ import kotlinx.coroutines.Dispatchers
+ import kotlinx.coroutines.launch
+ import kotlinx.coroutines.withContext
++import org.meshtastic.core.common.util.ioDispatcher
+ import org.meshtastic.core.resources.Res
+ import org.meshtastic.core.resources.debug_export_failed
+ import org.meshtastic.core.resources.debug_export_success
+@@ -48,7 +49,7 @@ actual fun rememberLogExporter(logsProvider: suspend () -> List<DebugViewModel.U
+ }
+ 
+ private suspend fun exportAllLogsToUri(context: Context, targetUri: Uri, logs: List<DebugViewModel.UiMeshLog>) =
+-    withContext(Dispatchers.IO) {
++    withContext(ioDispatcher) {
+         try {
+             if (logs.isEmpty()) {
+                 withContext(Dispatchers.Main) { context.showToast(Res.string.debug_export_failed, "No logs to export") }
+diff --git a/feature/settings/src/androidMain/kotlin/org/meshtastic/feature/settings/tak/PrefExporter.kt b/feature/settings/src/androidMain/kotlin/org/meshtastic/feature/settings/tak/PrefExporter.kt
+index 9afde85e5f..a28a576788 100644
+--- a/feature/settings/src/androidMain/kotlin/org/meshtastic/feature/settings/tak/PrefExporter.kt
++++ b/feature/settings/src/androidMain/kotlin/org/meshtastic/feature/settings/tak/PrefExporter.kt
+@@ -24,9 +24,9 @@ import androidx.compose.runtime.Composable
+ import androidx.compose.runtime.rememberCoroutineScope
+ import androidx.compose.ui.platform.LocalContext
+ import co.touchlab.kermit.Logger
+-import kotlinx.coroutines.Dispatchers
+ import kotlinx.coroutines.launch
+ import kotlinx.coroutines.withContext
++import org.meshtastic.core.common.util.ioDispatcher
+ 
+ @Composable
+ actual fun rememberDataPackageExporter(dataPackageProvider: suspend () -> ByteArray): (fileName: String) -> Unit {
+@@ -41,7 +41,7 @@ actual fun rememberDataPackageExporter(dataPackageProvider: suspend () -> ByteAr
+     return { fileName -> exportLauncher.launch(fileName) }
+ }
+ 
+-private suspend fun exportZipToUri(context: Context, targetUri: Uri, data: ByteArray) = withContext(Dispatchers.IO) {
++private suspend fun exportZipToUri(context: Context, targetUri: Uri, data: ByteArray) = withContext(ioDispatcher) {
+     try {
+         context.contentResolver.openOutputStream(targetUri)?.use { os -> os.write(data) }
+         Logger.i { "TAK data package exported successfully to $targetUri" }
+diff --git a/feature/settings/src/jvmMain/kotlin/org/meshtastic/feature/settings/debugging/LogExporter.kt b/feature/settings/src/jvmMain/kotlin/org/meshtastic/feature/settings/debugging/LogExporter.kt
+index 5b63cc90a3..a9a7285593 100644
+--- a/feature/settings/src/jvmMain/kotlin/org/meshtastic/feature/settings/debugging/LogExporter.kt
++++ b/feature/settings/src/jvmMain/kotlin/org/meshtastic/feature/settings/debugging/LogExporter.kt
+@@ -19,9 +19,9 @@ package org.meshtastic.feature.settings.debugging
+ import androidx.compose.runtime.Composable
+ import androidx.compose.runtime.rememberCoroutineScope
+ import co.touchlab.kermit.Logger
+-import kotlinx.coroutines.Dispatchers
+ import kotlinx.coroutines.launch
+ import kotlinx.coroutines.withContext
++import org.meshtastic.core.common.util.ioDispatcher
+ import java.awt.FileDialog
+ import java.awt.Frame
+ import java.io.File
+@@ -41,7 +41,7 @@ actual fun rememberLogExporter(logsProvider: suspend () -> List<DebugViewModel.U
+                 return@launch
+             }
+ 
+-            withContext(Dispatchers.IO) {
++            withContext(ioDispatcher) {
+                 // Run file dialog to ask user where to save
+                 val fileDialog = FileDialog(null as Frame?, "Export Logs", FileDialog.SAVE)
+                 fileDialog.file = fileName
+diff --git a/feature/settings/src/jvmMain/kotlin/org/meshtastic/feature/settings/tak/PrefExporter.kt b/feature/settings/src/jvmMain/kotlin/org/meshtastic/feature/settings/tak/PrefExporter.kt
+index 9fb71379fc..bfbb85bc0d 100644
+--- a/feature/settings/src/jvmMain/kotlin/org/meshtastic/feature/settings/tak/PrefExporter.kt
++++ b/feature/settings/src/jvmMain/kotlin/org/meshtastic/feature/settings/tak/PrefExporter.kt
+@@ -19,9 +19,9 @@ package org.meshtastic.feature.settings.tak
+ import androidx.compose.runtime.Composable
+ import androidx.compose.runtime.rememberCoroutineScope
+ import co.touchlab.kermit.Logger
+-import kotlinx.coroutines.Dispatchers
+ import kotlinx.coroutines.launch
+ import kotlinx.coroutines.withContext
++import org.meshtastic.core.common.util.ioDispatcher
+ import java.awt.FileDialog
+ import java.awt.Frame
+ import java.io.File
+@@ -44,7 +44,7 @@ actual fun rememberDataPackageExporter(dataPackageProvider: suspend () -> ByteAr
+                 if (directory != null && file != null) {
+                     val targetFile = File(directory, file)
+                     val data = dataPackageProvider()
+-                    withContext(Dispatchers.IO) { targetFile.writeBytes(data) }
++                    withContext(ioDispatcher) { targetFile.writeBytes(data) }
+                     Logger.i { "TAK data package exported successfully to ${targetFile.absolutePath}" }
+                 }
+             }

core/database/src/androidHostTest/kotlin/org/meshtastic/core/database/dao/MigrationTest.kt

@@ -20,7 +20,7 @@ import androidx.room3.Room
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import kotlinx.coroutines.flow.first
-import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.test.runTest
 import okio.ByteString.Companion.toByteString
 import org.junit.After
 import org.junit.Before
@@ -59,7 +59,7 @@ class MigrationTest {
         )
 
     @Before
-    fun createDb(): Unit = runBlocking {
+    fun createDb(): Unit = runTest {
         val context = ApplicationProvider.getApplicationContext<android.content.Context>()
         database =
             Room.inMemoryDatabaseBuilder<MeshtasticDatabase>(
@@ -77,7 +77,7 @@ class MigrationTest {
     }
 
     @Test
-    fun testMigrateChannelsByPSK_duplicatePSK() = runBlocking {
+    fun testMigrateChannelsByPSK_duplicatePSK() = runTest {
         // PSK \"AQ==\" is base64 for single byte 0x01
         val pskBytes = byteArrayOf(0x01).toByteString()
 
@@ -103,7 +103,7 @@ class MigrationTest {
     }
 
     @Test
-    fun testMigrateChannelsByPSK_reorder() = runBlocking {
+    fun testMigrateChannelsByPSK_reorder() = runTest {
         val pskA = byteArrayOf(0x01).toByteString()
         val pskB = byteArrayOf(0x02).toByteString()
 
@@ -122,7 +122,7 @@ class MigrationTest {
     }
 
     @Test
-    fun testMigrateChannelsByPSK_disambiguateByName() = runBlocking {
+    fun testMigrateChannelsByPSK_disambiguateByName() = runTest {
         val pskA = byteArrayOf(0x01).toByteString()
 
         insertPacket(channel = 0, text = "Msg A1")
@@ -141,7 +141,7 @@ class MigrationTest {
     }
 
     @Test
-    fun testMigrateChannelsByPSK_preferSameIndexIfStillAmbiguous() = runBlocking {
+    fun testMigrateChannelsByPSK_preferSameIndexIfStillAmbiguous() = runTest {
         val pskA = byteArrayOf(0x01).toByteString()
 
         insertPacket(channel = 0, text = "Msg A")

core/testing/src/commonMain/kotlin/org/meshtastic/core/testing/FakeDeviceHardwareRepository.kt

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.testing
+
+import org.meshtastic.core.model.DeviceHardware
+import org.meshtastic.core.repository.DeviceHardwareRepository
+
+/**
+ * A test double for [DeviceHardwareRepository] backed by an in-memory map keyed by `(hwModel, target)`.
+ *
+ * Call [setHardware] (or [setHardwareForModel]) to seed results, or [setResult] to control the exact [Result] returned
+ * for a given lookup. By default, lookups return `Result.success(null)`.
+ */
+class FakeDeviceHardwareRepository :
+    BaseFake(),
+    DeviceHardwareRepository {
+
+    private val hardware = mutableMapOf<Pair<Int, String?>, Result<DeviceHardware?>>()
+    private val calls = mutableListOf<Triple<Int, String?, Boolean>>()
+
+    init {
+        registerResetAction {
+            hardware.clear()
+            calls.clear()
+        }
+    }
+
+    /** Records every [getDeviceHardwareByModel] invocation for assertion. */
+    val recordedCalls: List<Triple<Int, String?, Boolean>>
+        get() = calls.toList()
+
+    override suspend fun getDeviceHardwareByModel(
+        hwModel: Int,
+        target: String?,
+        forceRefresh: Boolean,
+    ): Result<DeviceHardware?> {
+        calls.add(Triple(hwModel, target, forceRefresh))
+        return hardware[hwModel to target] ?: hardware[hwModel to null] ?: Result.success(null)
+    }
+
+    /** Seeds a successful lookup for the given model/target pair. */
+    fun setHardware(hwModel: Int, target: String? = null, device: DeviceHardware?) {
+        hardware[hwModel to target] = Result.success(device)
+    }
+
+    /** Seeds a successful lookup for any target of the given model. */
+    fun setHardwareForModel(hwModel: Int, device: DeviceHardware?) {
+        hardware[hwModel to null] = Result.success(device)
+    }
+
+    /** Seeds an arbitrary [Result] for the given lookup (use to test failure paths). */
+    fun setResult(hwModel: Int, target: String? = null, result: Result<DeviceHardware?>) {
+        hardware[hwModel to target] = result
+    }
+}

core/testing/src/commonMain/kotlin/org/meshtastic/core/testing/FakeFirmwareReleaseRepository.kt

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.testing
+
+import kotlinx.coroutines.flow.Flow
+import org.meshtastic.core.database.entity.FirmwareRelease
+import org.meshtastic.core.repository.FirmwareReleaseRepository
+
+/**
+ * A test double for [FirmwareReleaseRepository] that exposes stable and alpha releases as
+ * [kotlinx.coroutines.flow.MutableStateFlow]s.
+ *
+ * Use [setStableRelease] and [setAlphaRelease] to drive the emitted values.
+ */
+class FakeFirmwareReleaseRepository :
+    BaseFake(),
+    FirmwareReleaseRepository {
+
+    private val _stableRelease = mutableStateFlow<FirmwareRelease?>(null)
+    private val _alphaRelease = mutableStateFlow<FirmwareRelease?>(null)
+
+    override val stableRelease: Flow<FirmwareRelease?> = _stableRelease
+    override val alphaRelease: Flow<FirmwareRelease?> = _alphaRelease
+
+    var invalidateCacheCalls: Int = 0
+        private set
+
+    init {
+        registerResetAction { invalidateCacheCalls = 0 }
+    }
+
+    override suspend fun invalidateCache() {
+        invalidateCacheCalls++
+    }
+
+    fun setStableRelease(release: FirmwareRelease?) {
+        _stableRelease.value = release
+    }
+
+    fun setAlphaRelease(release: FirmwareRelease?) {
+        _alphaRelease.value = release
+    }
+}

core/testing/src/commonMain/kotlin/org/meshtastic/core/testing/FakeQuickChatActionRepository.kt

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.testing
+
+import kotlinx.coroutines.flow.Flow
+import org.meshtastic.core.database.entity.QuickChatAction
+import org.meshtastic.core.repository.QuickChatActionRepository
+
+/**
+ * A test double for [QuickChatActionRepository] that keeps actions in an in-memory list (sorted by `position`).
+ *
+ * The in-memory list is exposed reactively through [getAllActions].
+ */
+class FakeQuickChatActionRepository :
+    BaseFake(),
+    QuickChatActionRepository {
+
+    private val actionsFlow = mutableStateFlow<List<QuickChatAction>>(emptyList())
+
+    override fun getAllActions(): Flow<List<QuickChatAction>> = actionsFlow
+
+    override suspend fun upsert(action: QuickChatAction) {
+        val existingIndex = actionsFlow.value.indexOfFirst { it.uuid == action.uuid }
+        actionsFlow.value =
+            if (existingIndex >= 0) {
+                actionsFlow.value.toMutableList().also { it[existingIndex] = action }
+            } else {
+                actionsFlow.value + action
+            }
+                .sortedBy { it.position }
+    }
+
+    override suspend fun deleteAll() {
+        actionsFlow.value = emptyList()
+    }
+
+    override suspend fun delete(action: QuickChatAction) {
+        actionsFlow.value =
+            actionsFlow.value
+                .filterNot { it.uuid == action.uuid }
+                .map { if (it.position > action.position) it.copy(position = it.position - 1) else it }
+    }
+
+    override suspend fun setItemPosition(uuid: Long, newPos: Int) {
+        actionsFlow.value =
+            actionsFlow.value.map { if (it.uuid == uuid) it.copy(position = newPos) else it }.sortedBy { it.position }
+    }
+
+    /** Seeds the current list of actions (useful for test setup). */
+    fun setActions(actions: List<QuickChatAction>) {
+        actionsFlow.value = actions.sortedBy { it.position }
+    }
+
+    /** Returns the current in-memory snapshot. */
+    val currentActions: List<QuickChatAction>
+        get() = actionsFlow.value
+}

core/testing/src/commonMain/kotlin/org/meshtastic/core/testing/FakeRadioConfigRepository.kt

@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.testing
+
+import kotlinx.coroutines.flow.Flow
+import org.meshtastic.core.repository.RadioConfigRepository
+import org.meshtastic.proto.Channel
+import org.meshtastic.proto.ChannelSet
+import org.meshtastic.proto.ChannelSettings
+import org.meshtastic.proto.Config
+import org.meshtastic.proto.DeviceProfile
+import org.meshtastic.proto.DeviceUIConfig
+import org.meshtastic.proto.FileInfo
+import org.meshtastic.proto.LocalConfig
+import org.meshtastic.proto.LocalModuleConfig
+import org.meshtastic.proto.ModuleConfig
+
+/**
+ * A test double for [RadioConfigRepository] backed by in-memory [kotlinx.coroutines.flow.MutableStateFlow]s.
+ *
+ * All mutator methods update the underlying state flows synchronously so tests can observe changes immediately.
+ * [deviceProfileFlow] is derived from [localConfigFlow], [moduleConfigFlow], and the current channel set.
+ */
+@Suppress("TooManyFunctions")
+class FakeRadioConfigRepository :
+    BaseFake(),
+    RadioConfigRepository {
+
+    private val channelSetBacking = mutableStateFlow(ChannelSet())
+    override val channelSetFlow: Flow<ChannelSet> = channelSetBacking
+
+    private val localConfigBacking = mutableStateFlow(LocalConfig())
+    override val localConfigFlow: Flow<LocalConfig> = localConfigBacking
+
+    private val moduleConfigBacking = mutableStateFlow(LocalModuleConfig())
+    override val moduleConfigFlow: Flow<LocalModuleConfig> = moduleConfigBacking
+
+    private val deviceProfileBacking = mutableStateFlow(DeviceProfile())
+    override val deviceProfileFlow: Flow<DeviceProfile> = deviceProfileBacking
+    val currentDeviceProfile: DeviceProfile
+        get() = deviceProfileBacking.value
+
+    private val deviceUIConfigBacking = mutableStateFlow<DeviceUIConfig?>(null)
+    override val deviceUIConfigFlow: Flow<DeviceUIConfig?> = deviceUIConfigBacking
+
+    private val fileManifestBacking = mutableStateFlow<List<FileInfo>>(emptyList())
+    override val fileManifestFlow: Flow<List<FileInfo>> = fileManifestBacking
+
+    val currentChannelSet: ChannelSet
+        get() = channelSetBacking.value
+
+    val currentLocalConfig: LocalConfig
+        get() = localConfigBacking.value
+
+    val currentModuleConfig: LocalModuleConfig
+        get() = moduleConfigBacking.value
+
+    val currentDeviceUIConfig: DeviceUIConfig?
+        get() = deviceUIConfigBacking.value
+
+    val currentFileManifest: List<FileInfo>
+        get() = fileManifestBacking.value
+
+    /**
+     * Last [Config] passed to [setLocalConfig] (null until called). Tests should use [setLocalConfigDirect] to drive
+     * state.
+     */
+    var lastSetLocalConfig: Config? = null
+        private set
+
+    /** Last [ModuleConfig] passed to [setLocalModuleConfig] (null until called). */
+    var lastSetModuleConfig: ModuleConfig? = null
+        private set
+
+    init {
+        registerResetAction {
+            lastSetLocalConfig = null
+            lastSetModuleConfig = null
+        }
+    }
+
+    override suspend fun clearChannelSet() {
+        channelSetBacking.value = ChannelSet()
+    }
+
+    override suspend fun replaceAllSettings(settingsList: List<ChannelSettings>) {
+        channelSetBacking.value = channelSetBacking.value.copy(settings = settingsList)
+    }
+
+    override suspend fun updateChannelSettings(channel: Channel) {
+        val current = channelSetBacking.value.settings.toMutableList()
+        while (current.size <= channel.index) current.add(ChannelSettings())
+        current[channel.index] = channel.settings ?: ChannelSettings()
+        channelSetBacking.value = channelSetBacking.value.copy(settings = current)
+    }
+
+    override suspend fun clearLocalConfig() {
+        localConfigBacking.value = LocalConfig()
+    }
+
+    override suspend fun setLocalConfig(config: Config) {
+        lastSetLocalConfig = config
+    }
+
+    override suspend fun clearLocalModuleConfig() {
+        moduleConfigBacking.value = LocalModuleConfig()
+    }
+
+    override suspend fun setLocalModuleConfig(config: ModuleConfig) {
+        lastSetModuleConfig = config
+    }
+
+    override suspend fun setDeviceUIConfig(config: DeviceUIConfig) {
+        deviceUIConfigBacking.value = config
+    }
+
+    override suspend fun clearDeviceUIConfig() {
+        deviceUIConfigBacking.value = null
+    }
+
+    override suspend fun addFileInfo(info: FileInfo) {
+        fileManifestBacking.value = fileManifestBacking.value + info
+    }
+
+    override suspend fun clearFileManifest() {
+        fileManifestBacking.value = emptyList()
+    }
+
+    /** Directly sets the [LocalConfig] without merging (preferred for test setup). */
+    fun setLocalConfigDirect(config: LocalConfig) {
+        localConfigBacking.value = config
+    }
+
+    /** Directly sets the [LocalModuleConfig] without merging (preferred for test setup). */
+    fun setLocalModuleConfigDirect(config: LocalModuleConfig) {
+        moduleConfigBacking.value = config
+    }
+
+    /** Directly sets the combined [DeviceProfile] emitted by [deviceProfileFlow]. */
+    fun setDeviceProfile(profile: DeviceProfile) {
+        deviceProfileBacking.value = profile
+    }
+
+    /** Directly sets the [ChannelSet] (bypasses [updateChannelSettings]/[replaceAllSettings]). */
+    fun setChannelSet(channelSet: ChannelSet) {
+        channelSetBacking.value = channelSet
+    }
+}

core/testing/src/commonMain/kotlin/org/meshtastic/core/testing/FakeTracerouteSnapshotRepository.kt

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.testing
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+import org.meshtastic.core.repository.TracerouteSnapshotRepository
+import org.meshtastic.proto.Position
+
+/**
+ * A test double for [TracerouteSnapshotRepository] keyed by `logUuid`.
+ *
+ * Use [upsertSnapshotPositions] as you would in production, or [seedSnapshot] to directly inject state for a log.
+ */
+class FakeTracerouteSnapshotRepository :
+    BaseFake(),
+    TracerouteSnapshotRepository {
+
+    private val snapshots = mutableStateFlow<Map<String, Map<Int, Position>>>(emptyMap())
+    private val requestIds = mutableMapOf<String, Int>()
+
+    init {
+        registerResetAction { requestIds.clear() }
+    }
+
+    override fun getSnapshotPositions(logUuid: String): Flow<Map<Int, Position>> =
+        snapshots.map { it[logUuid].orEmpty() }
+
+    override suspend fun upsertSnapshotPositions(logUuid: String, requestId: Int, positions: Map<Int, Position>) {
+        requestIds[logUuid] = requestId
+        snapshots.value = snapshots.value.toMutableMap().also { it[logUuid] = positions }
+    }
+
+    /** Directly seeds the snapshot for a log (bypasses request-id tracking). */
+    fun seedSnapshot(logUuid: String, positions: Map<Int, Position>) {
+        snapshots.value = snapshots.value.toMutableMap().also { it[logUuid] = positions }
+    }
+
+    /** Returns the last request-id recorded for [logUuid], or `null` if none. */
+    fun lastRequestId(logUuid: String): Int? = requestIds[logUuid]
+}

core/testing/src/commonTest/kotlin/org/meshtastic/core/testing/RepositoryFakesTest.kt

@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.testing
+
+import app.cash.turbine.test
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.test.runTest
+import org.meshtastic.core.database.entity.FirmwareRelease
+import org.meshtastic.core.database.entity.QuickChatAction
+import org.meshtastic.core.model.DeviceHardware
+import org.meshtastic.proto.Channel
+import org.meshtastic.proto.ChannelSettings
+import org.meshtastic.proto.Position
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertNull
+import kotlin.test.assertTrue
+
+class RepositoryFakesTest {
+
+    @Test
+    fun `FakeDeviceHardwareRepository returns seeded hardware and records calls`() = runTest {
+        val repo = FakeDeviceHardwareRepository()
+        val hw = DeviceHardware(hwModel = 42, hwModelSlug = "TEST", platformioTarget = "tlora")
+        repo.setHardware(hwModel = 42, target = "tlora", device = hw)
+
+        val hit = repo.getDeviceHardwareByModel(hwModel = 42, target = "tlora", forceRefresh = false)
+        val miss = repo.getDeviceHardwareByModel(hwModel = 99)
+
+        assertEquals(hw, hit.getOrNull())
+        assertNull(miss.getOrNull())
+        assertEquals(2, repo.recordedCalls.size)
+        assertEquals(Triple(42, "tlora", false), repo.recordedCalls.first())
+    }
+
+    @Test
+    fun `FakeFirmwareReleaseRepository emits stable and alpha releases`() = runTest {
+        val repo = FakeFirmwareReleaseRepository()
+        val stable = FirmwareRelease(id = "1.0", title = "1.0", pageUrl = "", zipUrl = "")
+        val alpha = FirmwareRelease(id = "1.1-a", title = "1.1-a", pageUrl = "", zipUrl = "")
+
+        repo.setStableRelease(stable)
+        repo.setAlphaRelease(alpha)
+
+        assertEquals(stable, repo.stableRelease.first())
+        assertEquals(alpha, repo.alphaRelease.first())
+
+        repo.invalidateCache()
+        repo.invalidateCache()
+        assertEquals(2, repo.invalidateCacheCalls)
+    }
+
+    @Test
+    fun `FakeQuickChatActionRepository upsert delete and reorder`() = runTest {
+        val repo = FakeQuickChatActionRepository()
+        val a = QuickChatAction(uuid = 1L, name = "A", message = "hi", position = 0)
+        val b = QuickChatAction(uuid = 2L, name = "B", message = "bye", position = 1)
+
+        repo.upsert(a)
+        repo.upsert(b)
+        assertEquals(listOf(a, b), repo.getAllActions().first())
+
+        repo.setItemPosition(uuid = 1L, newPos = 5)
+        assertEquals(listOf(2L, 1L), repo.getAllActions().first().map { it.uuid })
+
+        repo.delete(b)
+        assertEquals(1, repo.currentActions.size)
+
+        repo.deleteAll()
+        assertTrue(repo.currentActions.isEmpty())
+    }
+
+    @Test
+    fun `FakeQuickChatActionRepository delete compacts positions`() = runTest {
+        val repo = FakeQuickChatActionRepository()
+        val a = QuickChatAction(uuid = 1L, name = "A", message = "", position = 0)
+        val b = QuickChatAction(uuid = 2L, name = "B", message = "", position = 1)
+        val c = QuickChatAction(uuid = 3L, name = "C", message = "", position = 2)
+        repo.upsert(a)
+        repo.upsert(b)
+        repo.upsert(c)
+
+        repo.delete(b)
+
+        // Matches real DAO's decrementPositionsAfter: positions must stay contiguous.
+        assertEquals(listOf(1L to 0, 3L to 1), repo.currentActions.map { it.uuid to it.position })
+    }
+
+    @Test
+    fun `FakeTracerouteSnapshotRepository roundtrips positions keyed by log uuid`() = runTest {
+        val repo = FakeTracerouteSnapshotRepository()
+        val positions = mapOf(1 to Position(latitude_i = 10), 2 to Position(latitude_i = 20))
+        repo.upsertSnapshotPositions(logUuid = "log-1", requestId = 99, positions = positions)
+
+        repo.getSnapshotPositions("log-1").test { assertEquals(positions, awaitItem()) }
+        assertEquals(99, repo.lastRequestId("log-1"))
+        assertNull(repo.lastRequestId("other"))
+    }
+
+    @Test
+    fun `FakeRadioConfigRepository tracks channel set and module config`() = runTest {
+        val repo = FakeRadioConfigRepository()
+        val a = ChannelSettings(name = "A")
+        val b = ChannelSettings(name = "B")
+
+        repo.replaceAllSettings(listOf(a, b))
+        assertEquals(listOf(a, b), repo.currentChannelSet.settings)
+
+        repo.updateChannelSettings(Channel(index = 1, settings = ChannelSettings(name = "B2")))
+        assertEquals("B2", repo.currentChannelSet.settings[1].name)
+
+        repo.clearChannelSet()
+        assertTrue(repo.currentChannelSet.settings.isEmpty())
+    }
+}