Add filter screen and viewmodel tests

Co-Authored-By: Boban Sijuk <49131853+boki91@users.noreply.github.com>

1 files changed, 129 insertions, 0 deletions

diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/FilterViewModelTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/FilterViewModelTest.kt
new file mode 100644
index 0000000000..9f61ea4a91
--- /dev/null
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/FilterViewModelTest.kt
@@ -0,0 +1,129 @@
+package net.mullvad.mullvadvpn.viewmodel
+
+import androidx.lifecycle.viewModelScope
+import app.cash.turbine.test
+import io.mockk.coVerify
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.unmockkAll
+import kotlin.test.assertEquals
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.test.runTest
+import net.mullvad.mullvadvpn.compose.state.toConstraintProviders
+import net.mullvad.mullvadvpn.compose.state.toOwnershipConstraint
+import net.mullvad.mullvadvpn.lib.common.test.TestCoroutineRule
+import net.mullvad.mullvadvpn.lib.common.test.assertLists
+import net.mullvad.mullvadvpn.model.Constraint
+import net.mullvad.mullvadvpn.model.Ownership
+import net.mullvad.mullvadvpn.model.Providers
+import net.mullvad.mullvadvpn.relaylist.Provider
+import net.mullvad.mullvadvpn.usecase.RelayListFilterUseCase
+import org.junit.After
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+
+class FilterViewModelTest {
+    @get:Rule val testCoroutineRule = TestCoroutineRule()
+    private val mockRelayListFilterUseCase: RelayListFilterUseCase = mockk(relaxed = true)
+    private lateinit var viewModel: FilterViewModel
+    private val selectedOwnership =
+        MutableStateFlow<Constraint<Ownership>>(Constraint.Only(Ownership.MullvadOwned))
+    private val dummyListOfAllProviders =
+        listOf(
+            Provider("31173", true),
+            Provider("100TB", false),
+            Provider("Blix", true),
+            Provider("Creanova", true),
+            Provider("DataPacket", false),
+            Provider("HostRoyale", false),
+            Provider("hostuniversal", false),
+            Provider("iRegister", false),
+            Provider("M247", false),
+            Provider("Makonix", false),
+            Provider("PrivateLayer", false),
+            Provider("ptisp", false),
+            Provider("Qnax", false),
+            Provider("Quadranet", false),
+            Provider("techfutures", false),
+            Provider("Tzulo", false),
+            Provider("xtom", false)
+        )
+    private val mockSelectedProviders: List<Provider> =
+        listOf(Provider("31173", true), Provider("Blix", true), Provider("Creanova", true))
+
+    @Before
+    fun setup() {
+        every { mockRelayListFilterUseCase.selectedOwnership() } returns selectedOwnership
+        every { mockRelayListFilterUseCase.availableProviders() } returns
+            flowOf(dummyListOfAllProviders)
+        every { mockRelayListFilterUseCase.selectedProviders() } returns
+            flowOf(Constraint.Only(Providers(mockSelectedProviders.map { it.name }.toHashSet())))
+        viewModel = FilterViewModel(mockRelayListFilterUseCase)
+    }
+
+    @After
+    fun teardown() {
+        viewModel.viewModelScope.coroutineContext.cancel()
+        unmockkAll()
+    }
+
+    @Test
+    fun testSetSelectedOwnership() = runTest {
+        // Arrange
+        val mockOwnership = Ownership.Rented
+        // Assert
+        viewModel.uiState.test {
+            assertEquals(awaitItem().selectedOwnership, Ownership.MullvadOwned)
+            viewModel.setSelectedOwnership(mockOwnership)
+            assertEquals(mockOwnership, awaitItem().selectedOwnership)
+        }
+    }
+
+    @Test
+    fun testSetSelectedProvider() = runTest {
+        // Arrange
+        val mockSelectedProvidersList = Provider("ptisp", false)
+        // Assert
+        viewModel.uiState.test {
+            assertLists(awaitItem().selectedProviders, mockSelectedProviders)
+            viewModel.setSelectedProvider(true, mockSelectedProvidersList)
+            assertLists(
+                listOf(mockSelectedProvidersList) + mockSelectedProviders,
+                awaitItem().selectedProviders
+            )
+        }
+    }
+
+    @Test
+    fun testSetAllProviders() = runTest {
+        // Arrange
+        val mockProvidersList = dummyListOfAllProviders
+        // Act
+        viewModel.setAllProviders(true)
+        // Assert
+        viewModel.uiState.test {
+            val state = awaitItem()
+            assertEquals(mockProvidersList, state.selectedProviders)
+        }
+    }
+
+    @Test
+    fun testOnApplyButtonClicked() = runTest {
+        // Arrange
+        val mockOwnership = Ownership.MullvadOwned.toOwnershipConstraint()
+        val mockSelectedProviders =
+            mockSelectedProviders.toConstraintProviders(dummyListOfAllProviders)
+        // Act
+        viewModel.onApplyButtonClicked()
+        // Assert
+        coVerify {
+            mockRelayListFilterUseCase.updateOwnershipAndProviderFilter(
+                mockOwnership,
+                mockSelectedProviders
+            )
+        }
+    }
+}