Add ui tests for welcome screen

android/app/src/androidTest/kotlin/net/mullvad/mullvadvpn/compose/screen/WelcomeScreenTest.kt

@@ -0,0 +1,185 @@
+package net.mullvad.mullvadvpn.compose.screen
+
+import androidx.compose.ui.test.junit4.createComposeRule
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import io.mockk.MockKAnnotations
+import io.mockk.mockk
+import io.mockk.verify
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import net.mullvad.mullvadvpn.compose.state.WelcomeUiState
+import net.mullvad.mullvadvpn.viewmodel.WelcomeViewModel
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+
+class WelcomeScreenTest {
+    @get:Rule val composeTestRule = createComposeRule()
+
+    @Before
+    fun setup() {
+        MockKAnnotations.init(this)
+    }
+
+    @Test
+    fun testDefaultState() {
+        // Arrange
+        composeTestRule.setContent {
+            WelcomeScreen(
+                showSitePayment = true,
+                uiState = WelcomeUiState(),
+                viewActions = MutableSharedFlow(),
+                onSitePaymentClick = {},
+                onRedeemVoucherClick = {},
+                onSettingsClick = {},
+                onAccountClick = {},
+                openConnectScreen = {}
+            )
+        }
+
+        // Assert
+        composeTestRule.apply {
+            onNodeWithText("Congrats!").assertExists()
+            onNodeWithText("Here’s your account number. Save it!").assertExists()
+        }
+    }
+
+    @Test
+    fun testDisableSitePayment() {
+        // Arrange
+        composeTestRule.setContent {
+            WelcomeScreen(
+                showSitePayment = false,
+                uiState = WelcomeUiState(),
+                viewActions = MutableSharedFlow(),
+                onSitePaymentClick = {},
+                onRedeemVoucherClick = {},
+                onSettingsClick = {},
+                onAccountClick = {},
+                openConnectScreen = {}
+            )
+        }
+
+        // Assert
+        composeTestRule.apply {
+            onNodeWithText(
+                    "Either buy credit on our website or redeem a voucher.",
+                    substring = true
+                )
+                .assertDoesNotExist()
+            onNodeWithText("Buy credit").assertDoesNotExist()
+        }
+    }
+
+    @Test
+    fun testShowAccountNumber() {
+        // Arrange
+        val rawAccountNumber = "1111222233334444"
+        val expectedAccountNumber = "1111 2222 3333 4444"
+        composeTestRule.setContent {
+            WelcomeScreen(
+                showSitePayment = true,
+                uiState = WelcomeUiState(accountNumber = rawAccountNumber),
+                viewActions = MutableSharedFlow(),
+                onSitePaymentClick = {},
+                onRedeemVoucherClick = {},
+                onSettingsClick = {},
+                onAccountClick = {},
+                openConnectScreen = {}
+            )
+        }
+
+        // Assert
+        composeTestRule.apply { onNodeWithText(expectedAccountNumber).assertExists() }
+    }
+
+    @Test
+    fun testOpenAccountView() {
+        // Arrange
+        composeTestRule.setContent {
+            WelcomeScreen(
+                showSitePayment = true,
+                uiState = WelcomeUiState(),
+                viewActions = MutableStateFlow(WelcomeViewModel.ViewAction.OpenAccountView("222")),
+                onSitePaymentClick = {},
+                onRedeemVoucherClick = {},
+                onSettingsClick = {},
+                onAccountClick = {},
+                openConnectScreen = {}
+            )
+        }
+
+        // Assert
+        composeTestRule.apply { onNodeWithText("Congrats!").assertDoesNotExist() }
+    }
+
+    @Test
+    fun testOpenConnectScreen() {
+        // Arrange
+        val mockClickListener: () -> Unit = mockk(relaxed = true)
+        composeTestRule.setContent {
+            WelcomeScreen(
+                showSitePayment = true,
+                uiState = WelcomeUiState(),
+                viewActions = MutableStateFlow(WelcomeViewModel.ViewAction.OpenConnectScreen),
+                onSitePaymentClick = {},
+                onRedeemVoucherClick = {},
+                onSettingsClick = {},
+                onAccountClick = {},
+                openConnectScreen = mockClickListener
+            )
+        }
+
+        // Assert
+        verify(exactly = 1) { mockClickListener.invoke() }
+    }
+
+    @Test
+    fun testClickSitePaymentButton() {
+        // Arrange
+        val mockClickListener: () -> Unit = mockk(relaxed = true)
+        composeTestRule.setContent {
+            WelcomeScreen(
+                showSitePayment = true,
+                uiState = WelcomeUiState(),
+                viewActions = MutableStateFlow(WelcomeViewModel.ViewAction.OpenConnectScreen),
+                onSitePaymentClick = mockClickListener,
+                onRedeemVoucherClick = {},
+                onSettingsClick = {},
+                onAccountClick = {},
+                openConnectScreen = {}
+            )
+        }
+
+        // Act
+        composeTestRule.apply { onNodeWithText("Buy credit").performClick() }
+
+        // Assert
+        verify(exactly = 1) { mockClickListener.invoke() }
+    }
+
+    @Test
+    fun testClickRedeemVoucher() {
+        // Arrange
+        val mockClickListener: () -> Unit = mockk(relaxed = true)
+        composeTestRule.setContent {
+            WelcomeScreen(
+                showSitePayment = true,
+                uiState = WelcomeUiState(),
+                viewActions = MutableStateFlow(WelcomeViewModel.ViewAction.OpenConnectScreen),
+                onSitePaymentClick = {},
+                onRedeemVoucherClick = mockClickListener,
+                onSettingsClick = {},
+                onAccountClick = {},
+                openConnectScreen = {}
+            )
+        }
+
+        // Act
+        composeTestRule.apply { onNodeWithText("Redeem voucher").performClick() }
+
+        // Assert
+        verify(exactly = 1) { mockClickListener.invoke() }
+    }
+}