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Improve tests for lockscreen (#6796)

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* Improve tests

* Address review comments.

* Refactor pin code tests and code to improve testability.

* Fix lint issues
This commit is contained in:
Jorge Martin Espinosa 2022-08-10 14:00:36 +02:00 committed by GitHub
parent fcc7bbadfa
commit aecf460c96
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 155 additions and 101 deletions
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19
vector/src/main/java/im/vector/app/features/pin/lockscreen/ui/LockScreenViewModel.kt
View file

@ -64,8 +64,6 @@ class LockScreenViewModel @AssistedInject constructor(
private val biometricHelper = biometricHelperFactory.create(initialState.lockScreenConfiguration)
private var firstEnteredCode: String? = null
// BiometricPrompt will automatically disable system auth after too many failed auth attempts
private var isSystemAuthTemporarilyDisabledByBiometricPrompt = false
@ -108,18 +106,17 @@ class LockScreenViewModel @AssistedInject constructor(
val state = awaitState()
when (state.lockScreenConfiguration.mode) {
LockScreenMode.CREATE -> {
if (firstEnteredCode == null && state.lockScreenConfiguration.needsNewCodeValidation) {
firstEnteredCode = code
_viewEvents.post(LockScreenViewEvent.ClearPinCode(false))
emit(PinCodeState.FirstCodeEntered)
val enteredPinCode = (state.pinCodeState as? PinCodeState.FirstCodeEntered)?.pinCode
if (enteredPinCode == null && state.lockScreenConfiguration.needsNewCodeValidation) {
_viewEvents.post(LockScreenViewEvent.ClearPinCode(confirmationFailed = false))
emit(PinCodeState.FirstCodeEntered(code))
} else {
if (!state.lockScreenConfiguration.needsNewCodeValidation || code == firstEnteredCode) {
if (!state.lockScreenConfiguration.needsNewCodeValidation || code == enteredPinCode) {
pinCodeHelper.createPinCode(code)
_viewEvents.post(LockScreenViewEvent.CodeCreationComplete)
emit(null)
} else {
firstEnteredCode = null
_viewEvents.post(LockScreenViewEvent.ClearPinCode(true))
_viewEvents.post(LockScreenViewEvent.ClearPinCode(confirmationFailed = true))
emit(PinCodeState.Idle)
}
}
@ -137,7 +134,9 @@ class LockScreenViewModel @AssistedInject constructor(
}.catch { error ->
_viewEvents.post(LockScreenViewEvent.AuthError(AuthMethod.PIN_CODE, error))
}.onEach { newPinState ->
newPinState?.let { setState { copy(pinCodeState = it) } }
if (newPinState != null) {
setState { copy(pinCodeState = newPinState) }
}
}.launchIn(viewModelScope)
@SuppressLint("NewApi")

4
vector/src/main/java/im/vector/app/features/pin/lockscreen/ui/LockScreenViewState.kt
View file

@ -27,11 +27,11 @@ data class LockScreenViewState(
val isBiometricKeyInvalidated: Boolean,
) : MavericksState {
constructor(lockScreenConfiguration: LockScreenConfiguration) : this(
lockScreenConfiguration, false, false, PinCodeState.Idle, false
lockScreenConfiguration, false, false, PinCodeState.Idle, false,
)
}
sealed class PinCodeState {
object Idle : PinCodeState()
object FirstCodeEntered : PinCodeState()
data class FirstCodeEntered(val pinCode: String) : PinCodeState()
}

218
vector/src/test/java/im/vector/app/features/pin/lockscreen/fragment/LockScreenViewModelTests.kt
View file

@ -19,9 +19,11 @@ package im.vector.app.features.pin.lockscreen.fragment
import android.app.KeyguardManager
import android.os.Build
import android.security.keystore.KeyPermanentlyInvalidatedException
import androidx.biometric.BiometricPrompt
import androidx.fragment.app.FragmentActivity
import com.airbnb.mvrx.test.MvRxTestRule
import com.airbnb.mvrx.withState
import im.vector.app.features.pin.lockscreen.biometrics.BiometricAuthError
import im.vector.app.features.pin.lockscreen.biometrics.BiometricHelper
import im.vector.app.features.pin.lockscreen.configuration.LockScreenConfiguration
import im.vector.app.features.pin.lockscreen.configuration.LockScreenMode
@ -42,10 +44,8 @@ import io.mockk.every
import io.mockk.mockk
import io.mockk.verify
import kotlinx.coroutines.flow.flowOf
import kotlinx.coroutines.test.advanceUntilIdle
import kotlinx.coroutines.test.runTest
import org.amshove.kluent.shouldBeEqualTo
import org.amshove.kluent.shouldBeFalse
import org.amshove.kluent.shouldBeTrue
import org.amshove.kluent.shouldNotBeEqualTo
import org.junit.Before
import org.junit.Rule
@ -76,138 +76,141 @@ class LockScreenViewModelTests {
@Test
fun `init migrates old keys to new ones if needed`() {
// given
val initialState = createViewState()
// when
LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
// then
coVerify { keysMigrator.migrateIfNeeded() }
}
@Test
fun `init updates the initial state with biometric info`() = runTest {
// given
every { biometricHelper.isSystemAuthEnabledAndValid } returns true
val initialState = createViewState()
// when
val viewModel = LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
advanceUntilIdle()
val newState = viewModel.awaitState()
// then
val newState = viewModel.awaitState() // Can't use viewModel.test() here since we want to record events emitted on init
newState shouldNotBeEqualTo initialState
}
@Test
fun `Updating the initial state with biometric info waits until device is unlocked on Android 12+`() = runTest {
// given
val initialState = createViewState()
versionProvider.value = Build.VERSION_CODES.S
// when
LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
advanceUntilIdle()
// then
verify { keyguardManager.isDeviceLocked }
}
@Test
fun `when ViewModel is instantiated initialState is updated with biometric info`() {
// given
givenShowBiometricPromptAutomatically()
val initialState = createViewState()
// This should set canUseBiometricAuth to true
every { biometricHelper.isSystemAuthEnabledAndValid } returns true
// when
val viewModel = LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val newState = withState(viewModel) { it }
initialState shouldNotBeEqualTo newState
// then
withState(viewModel) { newState ->
initialState shouldNotBeEqualTo newState
}
}
@Test
fun `when onPinCodeEntered is called in VERIFY mode, the code is verified and the result is emitted as a ViewEvent`() = runTest {
fun `when onPinCodeEntered is called in VERIFY mode and verification is successful, code is verified and result is emitted as a ViewEvent`() = runTest {
// given
val initialState = createViewState()
val viewModel = LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
coEvery { pinCodeHelper.verifyPinCode(any()) } returns true
val events = viewModel.test().viewEvents
events.assertNoValues()
val stateBefore = viewModel.awaitState()
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.PinCodeEntered("1234"))
// then
coVerify { pinCodeHelper.verifyPinCode(any()) }
events.assertValues(LockScreenViewEvent.AuthSuccessful(AuthMethod.PIN_CODE))
test.assertEvents(LockScreenViewEvent.AuthSuccessful(AuthMethod.PIN_CODE))
test.assertStates(initialState)
}
@Test
fun `when onPinCodeEntered is called in VERIFY mode and verification fails, the error result is emitted as a ViewEvent`() = runTest {
// given
val initialState = createViewState()
val viewModel = LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
coEvery { pinCodeHelper.verifyPinCode(any()) } returns false
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.PinCodeEntered("1234"))
events.assertValues(LockScreenViewEvent.AuthSuccessful(AuthMethod.PIN_CODE), LockScreenViewEvent.AuthFailure(AuthMethod.PIN_CODE))
val stateAfter = viewModel.awaitState()
stateBefore shouldBeEqualTo stateAfter
// then
coVerify { pinCodeHelper.verifyPinCode(any()) }
test.assertEvents(LockScreenViewEvent.AuthFailure(AuthMethod.PIN_CODE))
test.assertStates(initialState)
}
@Test
fun `when onPinCodeEntered is called in CREATE mode with no confirmation needed it creates the pin code`() = runTest {
// given
val configuration = createDefaultConfiguration(mode = LockScreenMode.CREATE, needsNewCodeValidation = false)
val initialState = createViewState(lockScreenConfiguration = configuration)
val viewModel = LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val events = viewModel.test().viewEvents
events.assertNoValues()
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.PinCodeEntered("1234"))
// then
coVerify { pinCodeHelper.createPinCode(any()) }
events.assertValues(LockScreenViewEvent.CodeCreationComplete)
test.assertEvents(LockScreenViewEvent.CodeCreationComplete)
}
@Test
fun `when onPinCodeEntered is called twice in CREATE mode with confirmation needed it verifies and creates the pin code`() = runTest {
// given
val pinCode = "1234"
val configuration = createDefaultConfiguration(mode = LockScreenMode.CREATE, needsNewCodeValidation = true)
val initialState = createViewState(lockScreenConfiguration = configuration)
val initialState = createViewState(lockScreenConfiguration = configuration, pinCodeState = PinCodeState.FirstCodeEntered(pinCode))
val viewModel = LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val events = viewModel.test().viewEvents
events.assertNoValues()
viewModel.handle(LockScreenAction.PinCodeEntered("1234"))
events.assertValues(LockScreenViewEvent.ClearPinCode(false))
val pinCodeState = viewModel.awaitState().pinCodeState
pinCodeState shouldBeEqualTo PinCodeState.FirstCodeEntered
viewModel.handle(LockScreenAction.PinCodeEntered("1234"))
events.assertValues(LockScreenViewEvent.ClearPinCode(false), LockScreenViewEvent.CodeCreationComplete)
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.PinCodeEntered(pinCode))
// then
test.assertEvents(LockScreenViewEvent.CodeCreationComplete)
.assertLatestState { (it.pinCodeState as? PinCodeState.FirstCodeEntered)?.pinCode == pinCode }
}
@Test
fun `when onPinCodeEntered is called in CREATE mode with incorrect confirmation it clears the pin code`() = runTest {
// given
val configuration = createDefaultConfiguration(mode = LockScreenMode.CREATE, needsNewCodeValidation = true)
val initialState = createViewState(lockScreenConfiguration = configuration)
val initialState = createViewState(lockScreenConfiguration = configuration, pinCodeState = PinCodeState.FirstCodeEntered("1234"))
val viewModel = LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val events = viewModel.test().viewEvents
events.assertNoValues()
viewModel.handle(LockScreenAction.PinCodeEntered("1234"))
events.assertValues(LockScreenViewEvent.ClearPinCode(false))
val pinCodeState = viewModel.awaitState().pinCodeState
pinCodeState shouldBeEqualTo PinCodeState.FirstCodeEntered
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.PinCodeEntered("4321"))
events.assertValues(LockScreenViewEvent.ClearPinCode(false), LockScreenViewEvent.ClearPinCode(true))
val newPinCodeState = viewModel.awaitState().pinCodeState
newPinCodeState shouldBeEqualTo PinCodeState.Idle
// then
test.assertEvents(LockScreenViewEvent.ClearPinCode(true))
.assertLatestState(initialState.copy(pinCodeState = PinCodeState.Idle))
}
@Test
fun `onPinCodeEntered handles exceptions`() = runTest {
// given
val initialState = createViewState()
val viewModel = LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val exception = IllegalStateException("Something went wrong")
coEvery { pinCodeHelper.verifyPinCode(any()) } throws exception
val events = viewModel.test().viewEvents
events.assertNoValues()
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.PinCodeEntered("1234"))
events.assertValues(LockScreenViewEvent.AuthError(AuthMethod.PIN_CODE, exception))
// then
test.assertEvents(LockScreenViewEvent.AuthError(AuthMethod.PIN_CODE, exception))
}
@Test
fun `when showBiometricPrompt catches a KeyPermanentlyInvalidatedException it disables biometric authentication`() = runTest {
// given
versionProvider.value = Build.VERSION_CODES.M
every { biometricHelper.isSystemKeyValid } returns false
val exception = KeyPermanentlyInvalidatedException()
coEvery { biometricHelper.authenticate(any<FragmentActivity>()) } throws exception
@ -218,49 +221,81 @@ class LockScreenViewModelTests {
lockScreenConfiguration = configuration
)
val viewModel = LockScreenViewModel(initialState, pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val events = viewModel.test().viewEvents
events.assertNoValues()
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.ShowBiometricPrompt(mockk()))
events.assertValues(LockScreenViewEvent.ShowBiometricKeyInvalidatedMessage)
// then
test.assertEvents(LockScreenViewEvent.ShowBiometricKeyInvalidatedMessage)
// Biometric key is invalidated so biometric auth is disabled
.assertLatestState { !it.canUseBiometricAuth }
verify { biometricHelper.disableAuthentication() }
// System key was deleted, biometric auth should be disabled
every { biometricHelper.isSystemAuthEnabledAndValid } returns false
val newState = viewModel.awaitState()
newState.canUseBiometricAuth.shouldBeFalse()
}
@Test
fun `when showBiometricPrompt receives an event it propagates it as a ViewEvent`() = runTest {
// given
val viewModel = LockScreenViewModel(createViewState(), pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
coEvery { biometricHelper.authenticate(any<FragmentActivity>()) } returns flowOf(false, true)
val events = viewModel.test().viewEvents
events.assertNoValues()
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.ShowBiometricPrompt(mockk()))
events.assertValues(LockScreenViewEvent.AuthFailure(AuthMethod.BIOMETRICS), LockScreenViewEvent.AuthSuccessful(AuthMethod.BIOMETRICS))
// then
test.assertEvents(LockScreenViewEvent.AuthFailure(AuthMethod.BIOMETRICS), LockScreenViewEvent.AuthSuccessful(AuthMethod.BIOMETRICS))
}
@Test
fun `showBiometricPrompt handles exceptions`() = runTest {
// given
val viewModel = LockScreenViewModel(createViewState(), pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val exception = IllegalStateException("Something went wrong")
coEvery { biometricHelper.authenticate(any<FragmentActivity>()) } throws exception
val events = viewModel.test().viewEvents
events.assertNoValues()
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.ShowBiometricPrompt(mockk()))
events.assertValues(LockScreenViewEvent.AuthError(AuthMethod.BIOMETRICS, exception))
// then
test.assertEvents(LockScreenViewEvent.AuthError(AuthMethod.BIOMETRICS, exception))
}
private fun createViewState(
@Test
fun `when showBiometricPrompt handles isAuthDisabledError, canUseBiometricAuth becomes false`() = runTest {
// given
val viewModel = LockScreenViewModel(createViewState(), pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val exception = BiometricAuthError(BiometricPrompt.ERROR_LOCKOUT_PERMANENT, "Permanent lockout")
coEvery { biometricHelper.authenticate(any<FragmentActivity>()) } throws exception
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.ShowBiometricPrompt(mockk()))
// then
exception.isAuthDisabledError.shouldBeTrue()
test.assertEvents(LockScreenViewEvent.AuthError(AuthMethod.BIOMETRICS, exception))
.assertLatestState { !it.canUseBiometricAuth }
}
@Test
fun `when OnUIReady action is received and showBiometricPromptAutomatically is true it shows prompt`() = runTest {
// given
givenShowBiometricPromptAutomatically()
val viewModel = LockScreenViewModel(createViewState(), pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.OnUIReady)
// then
test.assertEvents(LockScreenViewEvent.ShowBiometricPromptAutomatically)
}
@Test
fun `when OnUIReady action is received and isBiometricKeyInvalidated is true it shows prompt`() = runTest {
// given
givenBiometricKeyIsInvalidated()
val viewModel = LockScreenViewModel(createViewState(), pinCodeHelper, biometricHelperFactory, keysMigrator, versionProvider, keyguardManager)
val test = viewModel.test()
// when
viewModel.handle(LockScreenAction.OnUIReady)
// then
test.assertEvents(LockScreenViewEvent.ShowBiometricKeyInvalidatedMessage)
}
private fun createViewState(
lockScreenConfiguration: LockScreenConfiguration = createDefaultConfiguration(),
canUseBiometricAuth: Boolean = false,
showBiometricPromptAutomatically: Boolean = false,
@ -286,4 +321,13 @@ class LockScreenViewModelTests {
isDeviceCredentialUnlockEnabled,
needsNewCodeValidation
).let(otherChanges)
private fun givenBiometricKeyIsInvalidated() {
every { biometricHelper.hasSystemKey } returns true
every { biometricHelper.isSystemKeyValid } returns false
}
private fun givenShowBiometricPromptAutomatically() {
every { biometricHelper.isSystemAuthEnabledAndValid } returns true
}
}

5
vector/src/test/java/im/vector/app/test/Extensions.kt
View file

@ -91,6 +91,11 @@ class ViewModelTest<S, VE>(
return this
}
fun assertLatestState(predicate: (S) -> Boolean): ViewModelTest<S, VE> {
states.assertLatestValue(predicate)
return this
}
fun finish() {
states.finish()
viewEvents.finish()

10
vector/src/test/java/im/vector/app/test/FlowTestObserver.kt
View file

@ -47,8 +47,14 @@ class FlowTestObserver<T>(
return this
}
fun assertLatestValue(value: T) {
assertTrue(values.last() == value)
fun assertLatestValue(predicate: (T) -> Boolean): FlowTestObserver<T> {
assertTrue(predicate(values.last()))
return this
}
fun assertLatestValue(value: T): FlowTestObserver<T> {
assertEquals(value, values.last())
return this
}
fun assertValues(values: List<T>): FlowTestObserver<T> {