Merge branch 'develop' into feature/bca/rust_flavor

changelog.d/7694.feature

@@ -0,0 +1 @@
+Remind unverified sessions with a banner once a week

library/ui-strings/src/main/res/values/strings.xml

@@ -2653,8 +2653,12 @@
     <string name="encrypted_unverified">Encrypted by an unverified device</string>
     <string name="encrypted_by_deleted">Encrypted by a deleted device</string>
     <string name="key_authenticity_not_guaranteed">The authenticity of this encrypted message can\'t be guaranteed on this device.</string>
-    <string name="review_logins">Review where you’re logged in</string>
+    <!-- TODO TO BE REMOVED -->
-    <string name="verify_other_sessions">Verify all your sessions to ensure your account &amp; messages are safe</string>
+    <string name="review_logins" tools:ignore="UnusedResources">Review where you’re logged in</string>
+    <!-- TODO TO BE REMOVED -->
+    <string name="verify_other_sessions" tools:ignore="UnusedResources">Verify all your sessions to ensure your account &amp; messages are safe</string>
+    <string name="review_unverified_sessions_title">You have unverified sessions</string>
+    <string name="review_unverified_sessions_description">Review to ensure your account is safe</string>
     <!-- Argument will be replaced by the other session name (e.g, Desktop, mobile) -->
     <string name="verify_this_session">Verify the new login accessing your account: %1$s</string>
 

vector-app/src/debug/java/im/vector/app/features/debug/features/DebugVectorFeatures.kt

@@ -88,6 +88,9 @@ class DebugVectorFeatures(
     override fun isVoiceBroadcastEnabled(): Boolean = read(DebugFeatureKeys.voiceBroadcastEnabled)
             ?: vectorFeatures.isVoiceBroadcastEnabled()
 
+    override fun isUnverifiedSessionsAlertEnabled(): Boolean = read(DebugFeatureKeys.unverifiedSessionsAlertEnabled)
+            ?: vectorFeatures.isUnverifiedSessionsAlertEnabled()
+
     fun <T> override(value: T?, key: Preferences.Key<T>) = updatePreferences {
         if (value == null) {
             it.remove(key)
@@ -151,4 +154,5 @@ object DebugFeatureKeys {
     val qrCodeLoginForAllServers = booleanPreferencesKey("qr-code-login-for-all-servers")
     val reciprocateQrCodeLogin = booleanPreferencesKey("reciprocate-qr-code-login")
     val voiceBroadcastEnabled = booleanPreferencesKey("voice-broadcast-enabled")
+    val unverifiedSessionsAlertEnabled = booleanPreferencesKey("unverified-sessions-alert-enabled")
 }

vector-config/src/main/java/im/vector/app/config/Config.kt

@@ -16,6 +16,8 @@
 
 package im.vector.app.config
 
+import kotlin.time.Duration.Companion.days
+
 /**
  * Set of flags to configure the application.
  */
@@ -95,4 +97,6 @@ object Config {
     val NIGHTLY_ANALYTICS_CONFIG = RELEASE_ANALYTICS_CONFIG.copy(sentryEnvironment = "NIGHTLY")
     val ER_NIGHTLY_ANALYTICS_CONFIG = RELEASE_ANALYTICS_CONFIG.copy(sentryEnvironment = "element-r")
     val ER_DEBUG_ANALYTICS_CONFIG = DEBUG_ANALYTICS_CONFIG.copy(sentryEnvironment = "element-r")
+
+    val SHOW_UNVERIFIED_SESSIONS_ALERT_AFTER_MILLIS = 7.days.inWholeMilliseconds // 1 Week
 }

vector/src/main/java/im/vector/app/features/VectorFeatures.kt

@@ -44,6 +44,7 @@ interface VectorFeatures {
     fun isQrCodeLoginForAllServers(): Boolean
     fun isReciprocateQrCodeLogin(): Boolean
     fun isVoiceBroadcastEnabled(): Boolean
+    fun isUnverifiedSessionsAlertEnabled(): Boolean
 }
 
 class DefaultVectorFeatures : VectorFeatures {
@@ -63,4 +64,5 @@ class DefaultVectorFeatures : VectorFeatures {
     override fun isQrCodeLoginForAllServers(): Boolean = false
     override fun isReciprocateQrCodeLogin(): Boolean = false
     override fun isVoiceBroadcastEnabled(): Boolean = true
+    override fun isUnverifiedSessionsAlertEnabled(): Boolean = true
 }

vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt

@@ -239,12 +239,12 @@ class HomeDetailFragment :
                                     .requestSessionVerification(vectorBaseActivity, newest.deviceId ?: "")
                         }
                         unknownDeviceDetectorSharedViewModel.handle(
-                                UnknownDeviceDetectorSharedViewModel.Action.IgnoreDevice(newest.deviceId?.let { listOf(it) }.orEmpty())
+                                UnknownDeviceDetectorSharedViewModel.Action.IgnoreNewLogin(newest.deviceId?.let { listOf(it) }.orEmpty())
                         )
                     }
                     dismissedAction = Runnable {
                         unknownDeviceDetectorSharedViewModel.handle(
-                                UnknownDeviceDetectorSharedViewModel.Action.IgnoreDevice(newest.deviceId?.let { listOf(it) }.orEmpty())
+                                UnknownDeviceDetectorSharedViewModel.Action.IgnoreNewLogin(newest.deviceId?.let { listOf(it) }.orEmpty())
                         )
                     }
                 }
@@ -256,8 +256,8 @@ class HomeDetailFragment :
         alertManager.postVectorAlert(
                 VerificationVectorAlert(
                         uid = uid,
-                        title = getString(R.string.review_logins),
+                        title = getString(R.string.review_unverified_sessions_title),
-                        description = getString(R.string.verify_other_sessions),
+                        description = getString(R.string.review_unverified_sessions_description),
                         iconId = R.drawable.ic_shield_warning
                 ).apply {
                     viewBinder = VerificationVectorAlert.ViewBinder(user, avatarRenderer)

vector/src/main/java/im/vector/app/features/home/IsNewLoginAlertShownUseCase.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.home
+
+import im.vector.app.features.settings.VectorPreferences
+import javax.inject.Inject
+
+class IsNewLoginAlertShownUseCase @Inject constructor(
+        private val vectorPreferences: VectorPreferences,
+) {
+
+    fun execute(deviceId: String?): Boolean {
+        deviceId ?: return false
+
+        return vectorPreferences.isNewLoginAlertShownForDevice(deviceId)
+    }
+}

vector/src/main/java/im/vector/app/features/home/NewHomeDetailFragment.kt

@@ -253,12 +253,12 @@ class NewHomeDetailFragment :
                                     .requestSessionVerification(vectorBaseActivity, newest.deviceId ?: "")
                         }
                         unknownDeviceDetectorSharedViewModel.handle(
-                                UnknownDeviceDetectorSharedViewModel.Action.IgnoreDevice(newest.deviceId?.let { listOf(it) }.orEmpty())
+                                UnknownDeviceDetectorSharedViewModel.Action.IgnoreNewLogin(newest.deviceId?.let { listOf(it) }.orEmpty())
                         )
                     }
                     dismissedAction = Runnable {
                         unknownDeviceDetectorSharedViewModel.handle(
-                                UnknownDeviceDetectorSharedViewModel.Action.IgnoreDevice(newest.deviceId?.let { listOf(it) }.orEmpty())
+                                UnknownDeviceDetectorSharedViewModel.Action.IgnoreNewLogin(newest.deviceId?.let { listOf(it) }.orEmpty())
                         )
                     }
                 }
@@ -270,8 +270,8 @@ class NewHomeDetailFragment :
         alertManager.postVectorAlert(
                 VerificationVectorAlert(
                         uid = uid,
-                        title = getString(R.string.review_logins),
+                        title = getString(R.string.review_unverified_sessions_title),
-                        description = getString(R.string.verify_other_sessions),
+                        description = getString(R.string.review_unverified_sessions_description),
                         iconId = R.drawable.ic_shield_warning
                 ).apply {
                     viewBinder = VerificationVectorAlert.ViewBinder(user, avatarRenderer)

vector/src/main/java/im/vector/app/features/home/SetNewLoginAlertShownUseCase.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.home
+
+import im.vector.app.features.settings.VectorPreferences
+import javax.inject.Inject
+
+class SetNewLoginAlertShownUseCase @Inject constructor(
+        private val vectorPreferences: VectorPreferences,
+) {
+
+    fun execute(deviceIds: List<String>) {
+        deviceIds.forEach {
+            vectorPreferences.setNewLoginAlertShownForDevice(it)
+        }
+    }
+}

vector/src/main/java/im/vector/app/features/home/SetUnverifiedSessionsAlertShownUseCase.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.home
+
+import im.vector.app.core.time.Clock
+import im.vector.app.features.settings.VectorPreferences
+import javax.inject.Inject
+
+class SetUnverifiedSessionsAlertShownUseCase @Inject constructor(
+        private val vectorPreferences: VectorPreferences,
+        private val clock: Clock,
+) {
+
+    fun execute(deviceIds: List<String>) {
+        val epochMillis = clock.epochMillis()
+        deviceIds.forEach {
+            vectorPreferences.setUnverifiedSessionsAlertLastShownMillis(it, epochMillis)
+        }
+    }
+}

vector/src/main/java/im/vector/app/features/home/ShouldShowUnverifiedSessionsAlertUseCase.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.home
+
+import im.vector.app.config.Config
+import im.vector.app.core.time.Clock
+import im.vector.app.features.VectorFeatures
+import im.vector.app.features.settings.VectorPreferences
+import javax.inject.Inject
+
+class ShouldShowUnverifiedSessionsAlertUseCase @Inject constructor(
+        private val vectorFeatures: VectorFeatures,
+        private val vectorPreferences: VectorPreferences,
+        private val clock: Clock,
+) {
+
+    fun execute(deviceId: String?): Boolean {
+        deviceId ?: return false
+
+        val isUnverifiedSessionsAlertEnabled = vectorFeatures.isUnverifiedSessionsAlertEnabled()
+        val unverifiedSessionsAlertLastShownMillis = vectorPreferences.getUnverifiedSessionsAlertLastShownMillis(deviceId)
+        return isUnverifiedSessionsAlertEnabled &&
+                clock.epochMillis() - unverifiedSessionsAlertLastShownMillis >= Config.SHOW_UNVERIFIED_SESSIONS_ALERT_AFTER_MILLIS
+    }
+}

vector/src/main/java/im/vector/app/features/home/UnknownDeviceDetectorSharedViewModel.kt

@@ -19,7 +19,6 @@ package im.vector.app.features.home
 import com.airbnb.mvrx.Async
 import com.airbnb.mvrx.MavericksState
 import com.airbnb.mvrx.MavericksViewModelFactory
-import com.airbnb.mvrx.Success
 import com.airbnb.mvrx.Uninitialized
 import com.airbnb.mvrx.ViewModelContext
 import dagger.assisted.Assisted
@@ -33,7 +32,6 @@ import im.vector.app.core.platform.EmptyViewEvents
 import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.core.platform.VectorViewModelAction
 import im.vector.app.core.time.Clock
-import im.vector.app.features.settings.VectorPreferences
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.flow
@@ -61,14 +59,19 @@ data class DeviceDetectionInfo(
         val currentSessionTrust: Boolean
 )
 
-class UnknownDeviceDetectorSharedViewModel @AssistedInject constructor(@Assisted initialState: UnknownDevicesState,
+class UnknownDeviceDetectorSharedViewModel @AssistedInject constructor(
-                                                                       session: Session,
+        @Assisted initialState: UnknownDevicesState,
-                                                                       private val vectorPreferences: VectorPreferences,
+        session: Session,
-                                                                       private val clock: Clock,) :
+        clock: Clock,
-        VectorViewModel<UnknownDevicesState, UnknownDeviceDetectorSharedViewModel.Action, EmptyViewEvents>(initialState) {
+        private val shouldShowUnverifiedSessionsAlertUseCase: ShouldShowUnverifiedSessionsAlertUseCase,
+        private val setUnverifiedSessionsAlertShownUseCase: SetUnverifiedSessionsAlertShownUseCase,
+        private val isNewLoginAlertShownUseCase: IsNewLoginAlertShownUseCase,
+        private val setNewLoginAlertShownUseCase: SetNewLoginAlertShownUseCase,
+) : VectorViewModel<UnknownDevicesState, UnknownDeviceDetectorSharedViewModel.Action, EmptyViewEvents>(initialState) {
 
     sealed class Action : VectorViewModelAction {
         data class IgnoreDevice(val deviceIds: List<String>) : Action()
+        data class IgnoreNewLogin(val deviceIds: List<String>) : Action()
     }
 
     @AssistedFactory
@@ -86,37 +89,35 @@ class UnknownDeviceDetectorSharedViewModel @AssistedInject constructor(@Assisted
         }
     }
 
-    private val ignoredDeviceList = ArrayList<String>()
-
     init {
-        ignoredDeviceList.addAll(
+        val currentSessionTs = session.cryptoService().getCryptoDeviceInfo(session.myUserId)
-                vectorPreferences.getUnknownDeviceDismissedList().also {
+                .firstOrNull { it.deviceId == session.sessionParams.deviceId }
-                    Timber.v("## Detector - Remembered ignored list $it")
+                ?.firstTimeSeenLocalTs
-                }
+                ?: clock.epochMillis()
-        )
+        Timber.v("## Detector - Current Session first time seen $currentSessionTs")
 
         combine(
                 session.flow().liveUserCryptoDevices(session.myUserId),
                 session.flow().liveMyDevicesInfo(),
                 session.flow().liveCrossSigningPrivateKeys(),
-                session.firstTimeDeviceSeen(),
+                ) { cryptoList, infoList, pInfo ->
-                ) { cryptoList, infoList, pInfo, firstTimeDeviceSeen ->
             //                    Timber.v("## Detector trigger ${cryptoList.map { "${it.deviceId} ${it.trustLevel}" }}")
 //                    Timber.v("## Detector trigger canCrossSign ${pInfo.get().selfSigned != null}")
-            Timber.v("## Detector - Current Session first time seen $firstTimeDeviceSeen")
             infoList
                     .filter { info ->
                         // filter verified session, by checking the crypto device info
                         cryptoList.firstOrNull { info.deviceId == it.deviceId }?.isVerified?.not().orFalse()
                     }
                     // filter out ignored devices
-                    .filter { !ignoredDeviceList.contains(it.deviceId) }
+                    .filter { shouldShowUnverifiedSessionsAlertUseCase.execute(it.deviceId) }
                     .sortedByDescending { it.lastSeenTs }
                     .map { deviceInfo ->
                         val deviceKnownSince = cryptoList.firstOrNull { it.deviceId == deviceInfo.deviceId }?.firstTimeSeenLocalTs ?: 0
+                        val isNew = isNewLoginAlertShownUseCase.execute(deviceInfo.deviceId).not() && deviceKnownSince > currentSessionTs
+
                         DeviceDetectionInfo(
                                 deviceInfo,
-                                deviceKnownSince > firstTimeDeviceSeen + 60_000, // short window to avoid false positive,
+                                isNew,
                                 pInfo.getOrNull()?.selfSigned != null // adding this to pass distinct when cross sign change
                         )
                     }
@@ -148,30 +149,11 @@ class UnknownDeviceDetectorSharedViewModel @AssistedInject constructor(@Assisted
     override fun handle(action: Action) {
         when (action) {
             is Action.IgnoreDevice -> {
-                ignoredDeviceList.addAll(action.deviceIds)
+                setUnverifiedSessionsAlertShownUseCase.execute(action.deviceIds)
-                // local echo
+            }
-                withState { state ->
+            is Action.IgnoreNewLogin -> {
-                    state.unknownSessions.invoke()?.let { detectedSessions ->
+                setNewLoginAlertShownUseCase.execute(action.deviceIds)
-                        val updated = detectedSessions.filter { !action.deviceIds.contains(it.deviceInfo.deviceId) }
-                        setState {
-                            copy(unknownSessions = Success(updated))
-                        }
-                    }
-                }
             }
         }
     }
-
-    override fun onCleared() {
-        vectorPreferences.storeUnknownDeviceDismissedList(ignoredDeviceList)
-        super.onCleared()
-    }
-
-    private fun Session.firstTimeDeviceSeen() = flow {
-        val value = cryptoService().getCryptoDeviceInfoList(myUserId)
-                .firstOrNull { it.deviceId == sessionParams.deviceId }
-                ?.firstTimeSeenLocalTs
-                ?: clock.epochMillis()
-        emit(value)
-    }
 }

vector/src/main/java/im/vector/app/features/settings/VectorPreferences.kt

@@ -228,8 +228,6 @@ class VectorPreferences @Inject constructor(
         private const val MEDIA_SAVING_1_MONTH = 2
         private const val MEDIA_SAVING_FOREVER = 3
 
-        private const val SETTINGS_UNKNOWN_DEVICE_DISMISSED_LIST = "SETTINGS_UNKNWON_DEVICE_DISMISSED_LIST"
-
         private const val TAKE_PHOTO_VIDEO_MODE = "TAKE_PHOTO_VIDEO_MODE"
 
         private const val SETTINGS_LABS_ENABLE_LIVE_LOCATION = "SETTINGS_LABS_ENABLE_LIVE_LOCATION"
@@ -246,6 +244,9 @@ class VectorPreferences @Inject constructor(
         // This key will be used to enable user for displaying live user info or not.
         const val SETTINGS_TIMELINE_SHOW_LIVE_SENDER_INFO = "SETTINGS_TIMELINE_SHOW_LIVE_SENDER_INFO"
 
+        const val SETTINGS_UNVERIFIED_SESSIONS_ALERT_LAST_SHOWN_MILLIS = "SETTINGS_UNVERIFIED_SESSIONS_ALERT_LAST_SHOWN_MILLIS_"
+        const val SETTINGS_NEW_LOGIN_ALERT_SHOWN_FOR_DEVICE = "SETTINGS_NEW_LOGIN_ALERT_SHOWN_FOR_DEVICE_"
+
         // Possible values for TAKE_PHOTO_VIDEO_MODE
         const val TAKE_PHOTO_VIDEO_MODE_ALWAYS_ASK = 0
         const val TAKE_PHOTO_VIDEO_MODE_PHOTO = 1
@@ -521,18 +522,6 @@ class VectorPreferences @Inject constructor(
         return defaultPrefs.getBoolean(SETTINGS_PLAY_SHUTTER_SOUND_KEY, true)
     }
 
-    fun storeUnknownDeviceDismissedList(deviceIds: List<String>) {
-        defaultPrefs.edit(true) {
-            putStringSet(SETTINGS_UNKNOWN_DEVICE_DISMISSED_LIST, deviceIds.toSet())
-        }
-    }
-
-    fun getUnknownDeviceDismissedList(): List<String> {
-        return tryOrNull {
-            defaultPrefs.getStringSet(SETTINGS_UNKNOWN_DEVICE_DISMISSED_LIST, null)?.toList()
-        }.orEmpty()
-    }
-
     /**
      * Update the notification ringtone.
      *
@@ -1249,7 +1238,27 @@ class VectorPreferences @Inject constructor(
 
     fun setIpAddressVisibilityInDeviceManagerScreens(isVisible: Boolean) {
         defaultPrefs.edit {
-            putBoolean(VectorPreferences.SETTINGS_SESSION_MANAGER_SHOW_IP_ADDRESS, isVisible)
+            putBoolean(SETTINGS_SESSION_MANAGER_SHOW_IP_ADDRESS, isVisible)
+        }
+    }
+
+    fun getUnverifiedSessionsAlertLastShownMillis(deviceId: String): Long {
+        return defaultPrefs.getLong(SETTINGS_UNVERIFIED_SESSIONS_ALERT_LAST_SHOWN_MILLIS + deviceId, 0)
+    }
+
+    fun setUnverifiedSessionsAlertLastShownMillis(deviceId: String, lastShownMillis: Long) {
+        defaultPrefs.edit {
+            putLong(SETTINGS_UNVERIFIED_SESSIONS_ALERT_LAST_SHOWN_MILLIS + deviceId, lastShownMillis)
+        }
+    }
+
+    fun isNewLoginAlertShownForDevice(deviceId: String): Boolean {
+        return defaultPrefs.getBoolean(SETTINGS_NEW_LOGIN_ALERT_SHOWN_FOR_DEVICE + deviceId, false)
+    }
+
+    fun setNewLoginAlertShownForDevice(deviceId: String) {
+        defaultPrefs.edit {
+            putBoolean(SETTINGS_NEW_LOGIN_ALERT_SHOWN_FOR_DEVICE + deviceId, true)
         }
     }
 }

vector/src/test/java/im/vector/app/features/home/ShouldShowUnverifiedSessionsAlertUseCaseTest.kt

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.home
+
+import im.vector.app.config.Config
+import im.vector.app.test.fakes.FakeClock
+import im.vector.app.test.fakes.FakeVectorFeatures
+import im.vector.app.test.fakes.FakeVectorPreferences
+import org.amshove.kluent.shouldBe
+import org.junit.Test
+
+private val AN_EPOCH = Config.SHOW_UNVERIFIED_SESSIONS_ALERT_AFTER_MILLIS.toLong()
+private const val A_DEVICE_ID = "A_DEVICE_ID"
+
+class ShouldShowUnverifiedSessionsAlertUseCaseTest {
+
+    private val fakeVectorFeatures = FakeVectorFeatures()
+    private val fakeVectorPreferences = FakeVectorPreferences()
+    private val fakeClock = FakeClock()
+
+    private val shouldShowUnverifiedSessionsAlertUseCase = ShouldShowUnverifiedSessionsAlertUseCase(
+            vectorFeatures = fakeVectorFeatures,
+            vectorPreferences = fakeVectorPreferences.instance,
+            clock = fakeClock,
+    )
+
+    @Test
+    fun `given the feature is disabled then the use case returns false`() {
+        fakeVectorFeatures.givenUnverifiedSessionsAlertEnabled(false)
+        fakeVectorPreferences.givenUnverifiedSessionsAlertLastShownMillis(0L)
+
+        shouldShowUnverifiedSessionsAlertUseCase.execute(A_DEVICE_ID) shouldBe false
+    }
+
+    @Test
+    fun `given the feature in enabled and there is not a saved preference then the use case returns true`() {
+        fakeVectorFeatures.givenUnverifiedSessionsAlertEnabled(true)
+        fakeVectorPreferences.givenUnverifiedSessionsAlertLastShownMillis(0L)
+        fakeClock.givenEpoch(AN_EPOCH + 1)
+
+        shouldShowUnverifiedSessionsAlertUseCase.execute(A_DEVICE_ID) shouldBe true
+    }
+
+    @Test
+    fun `given the feature in enabled and last shown is a long time ago then the use case returns true`() {
+        fakeVectorFeatures.givenUnverifiedSessionsAlertEnabled(true)
+        fakeVectorPreferences.givenUnverifiedSessionsAlertLastShownMillis(AN_EPOCH)
+        fakeClock.givenEpoch(AN_EPOCH * 2 + 1)
+
+        shouldShowUnverifiedSessionsAlertUseCase.execute(A_DEVICE_ID) shouldBe true
+    }
+
+    @Test
+    fun `given the feature in enabled and last shown is not a long time ago then the use case returns false`() {
+        fakeVectorFeatures.givenUnverifiedSessionsAlertEnabled(true)
+        fakeVectorPreferences.givenUnverifiedSessionsAlertLastShownMillis(AN_EPOCH)
+        fakeClock.givenEpoch(AN_EPOCH + 1)
+
+        shouldShowUnverifiedSessionsAlertUseCase.execute(A_DEVICE_ID) shouldBe false
+    }
+}

vector/src/test/java/im/vector/app/test/fakes/FakeVectorFeatures.kt

@@ -50,4 +50,8 @@ class FakeVectorFeatures : VectorFeatures by spyk<DefaultVectorFeatures>() {
     fun givenVoiceBroadcast(isEnabled: Boolean) {
         every { isVoiceBroadcastEnabled() } returns isEnabled
     }
+
+    fun givenUnverifiedSessionsAlertEnabled(isEnabled: Boolean) {
+        every { isUnverifiedSessionsAlertEnabled() } returns isEnabled
+    }
 }

vector/src/test/java/im/vector/app/test/fakes/FakeVectorPreferences.kt

@@ -56,4 +56,8 @@ class FakeVectorPreferences {
     fun givenSessionManagerShowIpAddress(showIpAddress: Boolean) {
         every { instance.showIpAddressInSessionManagerScreens() } returns showIpAddress
     }
+
+    fun givenUnverifiedSessionsAlertLastShownMillis(lastShownMillis: Long) {
+        every { instance.getUnverifiedSessionsAlertLastShownMillis(any()) } returns lastShownMillis
+    }
 }