Node / meshtastic / Meshtastic-Android / files / core / network / src / commonTest / kotlin / org / meshtastic / core / network / radio / BleRadioInterfaceTest.kt

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T8b949e/*

* Copyright (c) 2025-2026 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/>.

*/

Tff7b72package T7ee787org.meshtastic.core.network.radio

Tff7b72import T7ee787dev.mokkery.MockMode

Tff7b72import T7ee787dev.mokkery.answering.returns

Tff7b72import T7ee787dev.mokkery.every

Tff7b72import T7ee787dev.mokkery.matcher.any

Tff7b72import T7ee787dev.mokkery.mock

Tff7b72import T7ee787dev.mokkery.verify

Tff7b72import T7ee787kotlinx.coroutines.ExperimentalCoroutinesApi

Tff7b72import T7ee787kotlinx.coroutines.test.TestScope

Tff7b72import T7ee787kotlinx.coroutines.test.advanceTimeBy

Tff7b72import T7ee787kotlinx.coroutines.test.runTest

Tff7b72import T7ee787org.meshtastic.core.model.RadioNotConnectedException

Tff7b72import T7ee787org.meshtastic.core.repository.RadioInterfaceService

Tff7b72import T7ee787org.meshtastic.core.testing.FakeBleConnection

Tff7b72import T7ee787org.meshtastic.core.testing.FakeBleConnectionFactory

Tff7b72import T7ee787org.meshtastic.core.testing.FakeBleDevice

Tff7b72import T7ee787org.meshtastic.core.testing.FakeBleScanner

Tff7b72import T7ee787org.meshtastic.core.testing.FakeBluetoothRepository

Tff7b72import T7ee787kotlin.test.BeforeTest

Tff7b72import T7ee787kotlin.test.Test

Tff7b72import T7ee787kotlin.test.assertEquals

Tf0883e@OptInTb4b4b4(Te6edf3ExperimentalCoroutinesApiTff7b72::Te6edf3classTb4b4b4)

Tff7b72class T56d364BleRadioInterfaceTest Tb4b4b4{

Tff7b72private Tff7b72val Te6edf3testScope Tff7b72= Te6edf3TestScopeTb4b4b4(Tb4b4b4)

Tff7b72private Tff7b72val Te6edf3scanner Tff7b72= Te6edf3FakeBleScannerTb4b4b4(Tb4b4b4)

Tff7b72private Tff7b72val Te6edf3bluetoothRepository Tff7b72= Te6edf3FakeBluetoothRepositoryTb4b4b4(Tb4b4b4)

Tff7b72private Tff7b72val Te6edf3connection Tff7b72= Te6edf3FakeBleConnectionTb4b4b4(Tb4b4b4)

Tff7b72private Tff7b72val Te6edf3connectionFactory Tff7b72= Te6edf3FakeBleConnectionFactoryTb4b4b4(Te6edf3connectionTb4b4b4)

Tff7b72private Tff7b72val Te6edf3serviceTb4b4b4: Te6edf3RadioInterfaceService Tff7b72= Te6edf3mockTb4b4b4(Te6edf3MockModeTb4b4b4.Te6edf3autofillTb4b4b4)

Tff7b72private Tff7b72val Te6edf3address Tff7b72= Ta5d6ff"Ta5d6ff00:11:22:33:44:55Ta5d6ff"

Tf0883e@BeforeTest

Tff7b72fun Td2a8ffsetupTb4b4b4(Tb4b4b4) Tb4b4b4{

Te6edf3bluetoothRepositoryTb4b4b4.Te6edf3setHasPermissionsTb4b4b4(Tff7b72trueTb4b4b4)

Te6edf3bluetoothRepositoryTb4b4b4.Te6edf3setBluetoothEnabledTb4b4b4(Tff7b72trueTb4b4b4)

Tb4b4b4}

Tf0883e@Test

Tff7b72fun Td2a8ff`connect attempts to scan and connect via init`Tb4b4b4(Tb4b4b4) Tff7b72= Te6edf3runTest Tb4b4b4{

Tff7b72val Te6edf3device Tff7b72= Te6edf3FakeBleDeviceTb4b4b4(Te6edf3address Tff7b72= Te6edf3addressTb4b4b4, Te6edf3name Tff7b72= Ta5d6ff"Ta5d6ffTest DeviceTa5d6ff"Tb4b4b4)

Te6edf3scannerTb4b4b4.Te6edf3emitDeviceTb4b4b4(Te6edf3deviceTb4b4b4)

Tff7b72val Te6edf3bleInterface Tff7b72=

Te6edf3BleRadioInterfaceTb4b4b4(

Te6edf3serviceScope Tff7b72= Te6edf3testScopeTb4b4b4,

Te6edf3scanner Tff7b72= Te6edf3scannerTb4b4b4,

Te6edf3bluetoothRepository Tff7b72= Te6edf3bluetoothRepositoryTb4b4b4,

Te6edf3connectionFactory Tff7b72= Te6edf3connectionFactoryTb4b4b4,

Te6edf3service Tff7b72= Te6edf3serviceTb4b4b4,

Te6edf3address Tff7b72= Te6edf3addressTb4b4b4,

Tb4b4b4)

T8b949e// init starts connect() which is async

T8b949e// In a real test we'd verify the connection state,

T8b949e// but for now this confirms it works with the fakes.

Te6edf3assertEqualsTb4b4b4(Te6edf3addressTb4b4b4, Te6edf3bleInterfaceTb4b4b4.Te6edf3addressTb4b4b4)

Tb4b4b4}

Tf0883e@Test

Tff7b72fun Td2a8ff`address returns correct value`Tb4b4b4(Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3bleInterface Tff7b72=

Te6edf3BleRadioInterfaceTb4b4b4(

Te6edf3serviceScope Tff7b72= Te6edf3testScopeTb4b4b4,

Te6edf3scanner Tff7b72= Te6edf3scannerTb4b4b4,

Te6edf3bluetoothRepository Tff7b72= Te6edf3bluetoothRepositoryTb4b4b4,

Te6edf3connectionFactory Tff7b72= Te6edf3connectionFactoryTb4b4b4,

Te6edf3service Tff7b72= Te6edf3serviceTb4b4b4,

Te6edf3address Tff7b72= Te6edf3addressTb4b4b4,

Tb4b4b4)

Te6edf3assertEqualsTb4b4b4(Te6edf3addressTb4b4b4, Te6edf3bleInterfaceTb4b4b4.Te6edf3addressTb4b4b4)

Tb4b4b4}

T8b949e/**

* After [RECONNECT_FAILURE_THRESHOLD] consecutive connection failures, [RadioInterfaceService.onDisconnect] must be

* called so the higher layers can react (e.g. start the device-sleep timeout in [MeshConnectionManagerImpl]).

*

* Virtual-time breakdown (RECONNECT_FAILURE_THRESHOLD = 3): t = 1 000 ms — iteration 1 settle delay elapses,

* connectAndAwait throws, backoff 5 s starts t = 6 000 ms — backoff ends t = 7 000 ms — iteration 2 settle delay

* elapses, connectAndAwait throws, backoff 10 s starts t = 17 000 ms — backoff ends t = 18 000 ms — iteration 3

* settle delay elapses, connectAndAwait throws → onDisconnect called

*/

Tf0883e@Test

Tff7b72fun Td2a8ff`onDisconnect is called after RECONNECT_FAILURE_THRESHOLD consecutive failures`Tb4b4b4(Tb4b4b4) Tff7b72= Te6edf3runTest Tb4b4b4{

Tff7b72val Te6edf3device Tff7b72= Te6edf3FakeBleDeviceTb4b4b4(Te6edf3address Tff7b72= Te6edf3addressTb4b4b4, Te6edf3name Tff7b72= Ta5d6ff"Ta5d6ffTest DeviceTa5d6ff"Tb4b4b4)

Te6edf3bluetoothRepositoryTb4b4b4.Te6edf3bondTb4b4b4(Te6edf3deviceTb4b4b4) T8b949e// skip BLE scan — device is already bonded

T8b949e// Make every connectAndAwait call throw so each iteration counts as one failure.

Te6edf3connectionTb4b4b4.Te6edf3connectException Tff7b72= Te6edf3RadioNotConnectedExceptionTb4b4b4(Ta5d6ff"Ta5d6ffsimulated failureTa5d6ff"Tb4b4b4)

Tff7b72val Te6edf3bleInterface Tff7b72=

Te6edf3BleRadioInterfaceTb4b4b4(

Te6edf3serviceScope Tff7b72= Tff7b72thisTb4b4b4,

Te6edf3scanner Tff7b72= Te6edf3scannerTb4b4b4,

Te6edf3bluetoothRepository Tff7b72= Te6edf3bluetoothRepositoryTb4b4b4,

Te6edf3connectionFactory Tff7b72= Te6edf3connectionFactoryTb4b4b4,

Te6edf3service Tff7b72= Te6edf3serviceTb4b4b4,

Te6edf3address Tff7b72= Te6edf3addressTb4b4b4,

Tb4b4b4)

T8b949e// Advance through exactly 3 failure iterations (≈18 001 ms virtual time).

T8b949e// The 4th iteration's backoff hasn't elapsed yet, so the coroutine is suspended

T8b949e// and advanceTimeBy returns cleanly.

Te6edf3advanceTimeByTb4b4b4(T79c0ff1T79c0ff8Te6edf3_001LTb4b4b4)

Te6edf3verify Tb4b4b4{ Te6edf3serviceTb4b4b4.Te6edf3onDisconnectTb4b4b4(Te6edf3anyTb4b4b4(Tb4b4b4)Tb4b4b4, Te6edf3anyTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4}

T8b949e// Cancel the reconnect loop so runTest can complete.

Te6edf3bleInterfaceTb4b4b4.Te6edf3closeTb4b4b4(Tb4b4b4)

Tb4b4b4}

T8b949e/**

* After [RECONNECT_MAX_FAILURES] (10) consecutive failures, the reconnect loop should stop and signal a permanent

* disconnect. This prevents infinite battery drain when the device is genuinely offline.

*

* Time budget for 10 failures with bonded device (no scan): Each iteration = 1s settle + connectAndAwait throw +

* backoff Backoffs: 5s, 10s, 20s, 40s, 60s, 60s, 60s, 60s, 60s, (exit at failure 10 before backoff) Total ≈ 10×1s

* settle + 5+10+20+40+60+60+60+60+60 = 10 + 375 = 385s ≈ 385_000ms We use a generous 400_000ms to cover any timing

* variance.

*/

Tf0883e@Test

Tff7b72fun Td2a8ff`reconnect loop stops after RECONNECT_MAX_FAILURES with permanent disconnect`Tb4b4b4(Tb4b4b4) Tff7b72= Te6edf3runTest Tb4b4b4{

Tff7b72val Te6edf3device Tff7b72= Te6edf3FakeBleDeviceTb4b4b4(Te6edf3address Tff7b72= Te6edf3addressTb4b4b4, Te6edf3name Tff7b72= Ta5d6ff"Ta5d6ffTest DeviceTa5d6ff"Tb4b4b4)

Te6edf3bluetoothRepositoryTb4b4b4.Te6edf3bondTb4b4b4(Te6edf3deviceTb4b4b4)

Te6edf3connectionTb4b4b4.Te6edf3connectException Tff7b72= Te6edf3RadioNotConnectedExceptionTb4b4b4(Ta5d6ff"Ta5d6ffsimulated failureTa5d6ff"Tb4b4b4)

Te6edf3every Tb4b4b4{ Te6edf3serviceTb4b4b4.Te6edf3onDisconnectTb4b4b4(Te6edf3anyTb4b4b4(Tb4b4b4)Tb4b4b4, Te6edf3anyTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4} Te6edf3returns Tffa657Unit

Tff7b72val Te6edf3bleInterface Tff7b72=

Te6edf3BleRadioInterfaceTb4b4b4(

Te6edf3serviceScope Tff7b72= Tff7b72thisTb4b4b4,

Te6edf3scanner Tff7b72= Te6edf3scannerTb4b4b4,

Te6edf3bluetoothRepository Tff7b72= Te6edf3bluetoothRepositoryTb4b4b4,

Te6edf3connectionFactory Tff7b72= Te6edf3connectionFactoryTb4b4b4,

Te6edf3service Tff7b72= Te6edf3serviceTb4b4b4,

Te6edf3address Tff7b72= Te6edf3addressTb4b4b4,

Tb4b4b4)

T8b949e// Advance enough time for all 10 failures to occur.

Te6edf3advanceTimeByTb4b4b4(T79c0ff4T79c0ff0T79c0ff0Te6edf3_001LTb4b4b4)

T8b949e// Should have been called with isPermanent=true at least once (the final call).

Te6edf3verify Tb4b4b4{ Te6edf3serviceTb4b4b4.Te6edf3onDisconnectTb4b4b4(Te6edf3isPermanent Tff7b72= Tff7b72trueTb4b4b4, Te6edf3errorMessage Tff7b72= Te6edf3anyTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4}

Te6edf3bleInterfaceTb4b4b4.Te6edf3closeTb4b4b4(Tb4b4b4)

Tb4b4b4}

Tf0883e@Test

Tff7b72fun Td2a8ff`computeReconnectBackoffMs returns correct backoff values`Tb4b4b4(Tb4b4b4) Tb4b4b4{

Te6edf3assertEqualsTb4b4b4(T79c0ff5Te6edf3_000LTb4b4b4, Te6edf3computeReconnectBackoffMsTb4b4b4(T79c0ff0Tb4b4b4)Tb4b4b4)

Te6edf3assertEqualsTb4b4b4(T79c0ff5Te6edf3_000LTb4b4b4, Te6edf3computeReconnectBackoffMsTb4b4b4(T79c0ff1Tb4b4b4)Tb4b4b4)

Te6edf3assertEqualsTb4b4b4(T79c0ff1T79c0ff0Te6edf3_000LTb4b4b4, Te6edf3computeReconnectBackoffMsTb4b4b4(T79c0ff2Tb4b4b4)Tb4b4b4)

Te6edf3assertEqualsTb4b4b4(T79c0ff2T79c0ff0Te6edf3_000LTb4b4b4, Te6edf3computeReconnectBackoffMsTb4b4b4(T79c0ff3Tb4b4b4)Tb4b4b4)

Te6edf3assertEqualsTb4b4b4(T79c0ff4T79c0ff0Te6edf3_000LTb4b4b4, Te6edf3computeReconnectBackoffMsTb4b4b4(T79c0ff4Tb4b4b4)Tb4b4b4)

Te6edf3assertEqualsTb4b4b4(T79c0ff6T79c0ff0Te6edf3_000LTb4b4b4, Te6edf3computeReconnectBackoffMsTb4b4b4(T79c0ff5Tb4b4b4)Tb4b4b4)

Te6edf3assertEqualsTb4b4b4(T79c0ff6T79c0ff0Te6edf3_000LTb4b4b4, Te6edf3computeReconnectBackoffMsTb4b4b4(T79c0ff1T79c0ff0Tb4b4b4)Tb4b4b4)

Te6edf3assertEqualsTb4b4b4(T79c0ff6T79c0ff0Te6edf3_000LTb4b4b4, Te6edf3computeReconnectBackoffMsTb4b4b4(T79c0ff1T79c0ff0T79c0ff0Tb4b4b4)Tb4b4b4)

Tb4b4b4}

Tb4b4b4}