app/src/androidTest/kotlin/org/libremail/ui/accountsetup/AppPasswordSetupScreenTest.kt

@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+package org.libremail.ui.accountsetup
+
+import android.app.Activity
+import android.app.Instrumentation
+import android.content.Intent
+import androidx.activity.ComponentActivity
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.junit4.createAndroidComposeRule
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.performScrollTo
+import androidx.compose.ui.test.performTextInput
+import androidx.lifecycle.SavedStateHandle
+import androidx.test.espresso.intent.Intents
+import androidx.test.espresso.intent.matcher.IntentMatchers.hasAction
+import androidx.test.espresso.intent.matcher.IntentMatchers.hasData
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.hamcrest.CoreMatchers.allOf
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.libremail.R
+import org.libremail.domain.model.MailProvider
+import org.libremail.ui.FakeAccountRepository
+import org.libremail.ui.navigation.Routes
+import org.libremail.ui.theme.LibreMailTheme
+
+/**
+ * End-to-end UI test for the guided app-password setup screen (#29). Drives the real
+ * [AppPasswordSetupScreen] + [AppPasswordViewModel] over a [FakeAccountRepository] for the preset
+ * Gmail vendor: the provider-specific chrome renders, entering an email + app password and tapping
+ * "Test & add" persists through the repository and reports the new account id, and tapping the
+ * "create an app password" help link fires the browser intent. That launch is asserted with
+ * Espresso-Intents (mirroring `AccountPickerScreenTest`'s Outlook test), so no real browser opens.
+ */
+@RunWith(AndroidJUnit4::class)
+class AppPasswordSetupScreenTest {
+
+    @get:Rule
+    val composeTestRule = createAndroidComposeRule<ComponentActivity>()
+
+    private val provider = MailProvider.GMAIL
+
+    private fun string(resId: Int, vararg args: Any) = composeTestRule.activity.getString(resId, *args)
+
+    private fun setContent(
+        repository: FakeAccountRepository = FakeAccountRepository(),
+        onAccountAdded: (String) -> Unit = {},
+    ) {
+        val viewModel = AppPasswordViewModel(
+            SavedStateHandle(mapOf(Routes.APP_PASSWORD_ARG_PROVIDER to provider.key)),
+            repository,
+        )
+        composeTestRule.setContent {
+            LibreMailTheme(darkTheme = false, dynamicColor = false) {
+                AppPasswordSetupScreen(onBack = {}, onAccountAdded = onAccountAdded, viewModel = viewModel)
+            }
+        }
+    }
+
+    @Test
+    fun rendersProviderTitle_andCredentialFields() {
+        setContent()
+
+        composeTestRule.onNodeWithText(string(R.string.app_password_title, provider.displayName)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.app_password_email)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.app_password_field)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.app_password_test_and_add)).performScrollTo().assertIsDisplayed()
+    }
+
+    @Test
+    fun enteringCredentials_andTappingTestAndAdd_addsAccountAndReportsId() {
+        val repository = FakeAccountRepository()
+        var addedId: String? = null
+        setContent(repository = repository, onAccountAdded = { addedId = it })
+
+        composeTestRule.onNodeWithText(string(R.string.app_password_email)).performTextInput("me@gmail.com")
+        composeTestRule.onNodeWithText(string(R.string.app_password_field)).performTextInput("app-pw-1234")
+        composeTestRule.onNodeWithText(string(R.string.app_password_test_and_add)).performScrollTo().performClick()
+
+        // A successful add persists via the repository and hands the new account id to the caller.
+        composeTestRule.waitUntil(5_000) {
+            repository.addedAccount?.email == "me@gmail.com" && addedId == "imap:me@gmail.com"
+        }
+    }
+
+    /**
+     * Tapping the "create an app password" link opens the provider's help page via
+     * [androidx.compose.ui.platform.UriHandler], which starts an `ACTION_VIEW` intent. Stubbing that
+     * intent both proves the tap launched it and stops a real browser from opening on the device.
+     */
+    @Test
+    fun tappingCreateAppPasswordPage_launchesBrowserIntentToHelpUrl() {
+        setContent()
+
+        Intents.init()
+        try {
+            Intents.intending(hasAction(Intent.ACTION_VIEW))
+                .respondWith(Instrumentation.ActivityResult(Activity.RESULT_CANCELED, null))
+
+            composeTestRule.onNodeWithText(string(R.string.app_password_open_page, provider.displayName))
+                .performScrollTo()
+                .performClick()
+
+            Intents.intended(allOf(hasAction(Intent.ACTION_VIEW), hasData(provider.appPasswordHelpUrl)))
+        } finally {
+            Intents.release()
+        }
+    }
+}

app/src/androidTest/kotlin/org/libremail/ui/compose/format/ColorSwatchRowTest.kt

@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+package org.libremail.ui.compose.format
+
+import androidx.activity.ComponentActivity
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.assertIsNotSelected
+import androidx.compose.ui.test.assertIsSelected
+import androidx.compose.ui.test.junit4.createAndroidComposeRule
+import androidx.compose.ui.test.onNodeWithContentDescription
+import androidx.compose.ui.test.performClick
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.junit.Assert.assertEquals
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.libremail.R
+import org.libremail.ui.theme.LibreMailTheme
+
+/**
+ * UI tests for the shared font-color / highlight swatch row (#78). [ColorSwatchRow] is
+ * presentational, so it is driven in isolation - independent of the compose formatting toolbar that
+ * hosts it - mirroring how `ParagraphAlignmentControlTest` exercises its control. Every swatch is a
+ * TalkBack-labeled, selectable button, so nodes are addressed by their content description.
+ */
+@RunWith(AndroidJUnit4::class)
+class ColorSwatchRowTest {
+
+    @get:Rule
+    val composeTestRule = createAndroidComposeRule<ComponentActivity>()
+
+    private val red = ColorSwatch(argb = 0xFFD32F2F.toInt(), label = "Red")
+    private val blue = ColorSwatch(argb = 0xFF1976D2.toInt(), label = "Blue")
+
+    private fun string(resId: Int) = composeTestRule.activity.getString(resId)
+
+    private fun setContent(selectedArgb: Int?, onSelect: (Int?) -> Unit = {}) {
+        composeTestRule.setContent {
+            LibreMailTheme(darkTheme = false, dynamicColor = false) {
+                ColorSwatchRow(swatches = listOf(red, blue), selectedArgb = selectedArgb, onSelect = onSelect)
+            }
+        }
+    }
+
+    @Test
+    fun showsNoneEntry_andEverySwatch() {
+        setContent(selectedArgb = null)
+
+        composeTestRule.onNodeWithContentDescription(string(R.string.format_color_none)).assertIsDisplayed()
+        composeTestRule.onNodeWithContentDescription(red.label).assertIsDisplayed()
+        composeTestRule.onNodeWithContentDescription(blue.label).assertIsDisplayed()
+    }
+
+    @Test
+    fun tappingASwatch_reportsItsArgb() {
+        var picked: Int? = -1
+        setContent(selectedArgb = null) { picked = it }
+
+        composeTestRule.onNodeWithContentDescription(blue.label).performClick()
+
+        assertEquals(blue.argb, picked)
+    }
+
+    @Test
+    fun tappingNoneEntry_reportsNull() {
+        var picked: Int? = red.argb
+        setContent(selectedArgb = red.argb) { picked = it }
+
+        composeTestRule.onNodeWithContentDescription(string(R.string.format_color_none)).performClick()
+
+        assertEquals(null, picked)
+    }
+
+    @Test
+    fun selectedSwatch_isMarkedSelected_andOthersAreNot() {
+        setContent(selectedArgb = red.argb)
+
+        composeTestRule.onNodeWithContentDescription(red.label).assertIsSelected()
+        composeTestRule.onNodeWithContentDescription(blue.label).assertIsNotSelected()
+        // With a color selected, the leading "no color" entry is not the selected one.
+        composeTestRule.onNodeWithContentDescription(string(R.string.format_color_none)).assertIsNotSelected()
+    }
+
+    @Test
+    fun noSelection_marksTheNoneEntrySelected() {
+        setContent(selectedArgb = null)
+
+        composeTestRule.onNodeWithContentDescription(string(R.string.format_color_none)).assertIsSelected()
+        composeTestRule.onNodeWithContentDescription(red.label).assertIsNotSelected()
+    }
+}

app/src/androidTest/kotlin/org/libremail/ui/lock/LockScreenTest.kt

@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+package org.libremail.ui.lock
+
+import androidx.activity.ComponentActivity
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.junit4.createAndroidComposeRule
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.libremail.R
+import org.libremail.ui.theme.LibreMailTheme
+
+/**
+ * UI tests for the app-lock gate. [LockScreen] is presentational (its biometric prompt is driven by
+ * the caller via [onUnlock]), so it is exercised in isolation: the locked title/body always show, an
+ * optional error string appears only when non-null, and the unlock button reports back.
+ */
+@RunWith(AndroidJUnit4::class)
+class LockScreenTest {
+
+    @get:Rule
+    val composeTestRule = createAndroidComposeRule<ComponentActivity>()
+
+    private fun string(resId: Int) = composeTestRule.activity.getString(resId)
+
+    private fun setContent(error: String? = null, onUnlock: () -> Unit = {}) {
+        composeTestRule.setContent {
+            LibreMailTheme(darkTheme = false, dynamicColor = false) {
+                LockScreen(error = error, onUnlock = onUnlock)
+            }
+        }
+    }
+
+    @Test
+    fun showsLockedTitleBody_andUnlockButton() {
+        setContent()
+
+        composeTestRule.onNodeWithText(string(R.string.app_lock_title)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.app_lock_locked_body)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.app_lock_unlock)).assertIsDisplayed()
+    }
+
+    @Test
+    fun noError_hidesErrorText() {
+        setContent(error = null)
+
+        composeTestRule.onNodeWithText(string(R.string.app_lock_unlock_failed)).assertDoesNotExist()
+    }
+
+    @Test
+    fun error_isDisplayed() {
+        setContent(error = string(R.string.app_lock_unlock_failed))
+
+        composeTestRule.onNodeWithText(string(R.string.app_lock_unlock_failed)).assertIsDisplayed()
+    }
+
+    @Test
+    fun tappingUnlock_invokesOnUnlock() {
+        var unlocked = false
+        setContent(onUnlock = { unlocked = true })
+
+        composeTestRule.onNodeWithText(string(R.string.app_lock_unlock)).performClick()
+
+        composeTestRule.waitUntil(5_000) { unlocked }
+    }
+}

app/src/androidTest/kotlin/org/libremail/ui/onboarding/AddAnotherAccountScreenTest.kt

@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+package org.libremail.ui.onboarding
+
+import androidx.activity.ComponentActivity
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.junit4.createAndroidComposeRule
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.libremail.R
+import org.libremail.ui.theme.LibreMailTheme
+
+/**
+ * UI tests for the post-add onboarding prompt. [AddAnotherAccountScreen] is presentational — it just
+ * confirms the add and routes the two choices back to the caller — so it is driven in isolation:
+ * "Add another" returns to the vendor picker and "No" finishes onboarding.
+ */
+@RunWith(AndroidJUnit4::class)
+class AddAnotherAccountScreenTest {
+
+    @get:Rule
+    val composeTestRule = createAndroidComposeRule<ComponentActivity>()
+
+    private fun string(resId: Int) = composeTestRule.activity.getString(resId)
+
+    private fun setContent(onAddAnother: () -> Unit = {}, onFinish: () -> Unit = {}) {
+        composeTestRule.setContent {
+            LibreMailTheme(darkTheme = false, dynamicColor = false) {
+                AddAnotherAccountScreen(onAddAnother = onAddAnother, onFinish = onFinish)
+            }
+        }
+    }
+
+    @Test
+    fun showsConfirmation_andBothChoices() {
+        setContent()
+
+        composeTestRule.onNodeWithText(string(R.string.onboarding_account_added_title)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.onboarding_add_another_prompt)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.onboarding_add_another_yes)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.onboarding_add_another_no)).assertIsDisplayed()
+    }
+
+    @Test
+    fun tappingAddAnother_invokesOnAddAnother() {
+        var addAnother = false
+        setContent(onAddAnother = { addAnother = true })
+
+        composeTestRule.onNodeWithText(string(R.string.onboarding_add_another_yes)).performClick()
+
+        composeTestRule.waitUntil(5_000) { addAnother }
+    }
+
+    @Test
+    fun tappingNo_invokesOnFinish() {
+        var finished = false
+        setContent(onFinish = { finished = true })
+
+        composeTestRule.onNodeWithText(string(R.string.onboarding_add_another_no)).performClick()
+
+        composeTestRule.waitUntil(5_000) { finished }
+    }
+}

app/src/androidTest/kotlin/org/libremail/ui/reporting/ReportReviewScreenTest.kt

@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+package org.libremail.ui.reporting
+
+import android.content.Context
+import androidx.activity.ComponentActivity
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.assertIsEnabled
+import androidx.compose.ui.test.assertIsNotEnabled
+import androidx.compose.ui.test.junit4.createAndroidComposeRule
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.performScrollTo
+import androidx.compose.ui.test.performTextInput
+import androidx.lifecycle.SavedStateHandle
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import io.mockk.every
+import io.mockk.mockk
+import org.junit.After
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.libremail.R
+import org.libremail.reporting.DebugReport
+import org.libremail.reporting.ReportKind
+import org.libremail.reporting.ReportStore
+import org.libremail.reporting.ReportSubmitter
+import org.libremail.ui.navigation.Routes
+import org.libremail.ui.theme.LibreMailTheme
+import java.io.File
+
+/**
+ * End-to-end UI test for [ReportReviewScreen] + [ReportReviewViewModel] over a real file-backed
+ * [ReportStore] (temp dir) and a [ReportSubmitter] stubbed as disabled (no ingest endpoint, this
+ * repo's default): the disclaimer + comment/email fields render, Submit stays disabled until the
+ * comment reaches the minimum length and the email is valid, and Discard deletes the report and
+ * leaves the screen. The submit-enqueue/upload path (WorkManager) is deliberately out of scope.
+ */
+@RunWith(AndroidJUnit4::class)
+class ReportReviewScreenTest {
+
+    @get:Rule
+    val composeTestRule = createAndroidComposeRule<ComponentActivity>()
+
+    private val context: Context =
+        InstrumentationRegistry.getInstrumentation().targetContext.applicationContext
+    private val storeDir = File(context.cacheDir, "report-review-test")
+    private val reportId = "r-1"
+
+    @Before
+    fun setUp() {
+        storeDir.deleteRecursively()
+    }
+
+    @After
+    fun tearDown() {
+        storeDir.deleteRecursively()
+    }
+
+    private fun string(resId: Int) = composeTestRule.activity.getString(resId)
+
+    private fun report(id: String) = DebugReport(
+        id = id,
+        createdAtMillis = 1_000L,
+        kind = ReportKind.MANUAL,
+        appVersionName = "1.0",
+        appVersionCode = 1L,
+        androidRelease = "14",
+        androidSdkInt = 34,
+        deviceManufacturer = "Test",
+        deviceModel = "Model",
+        stackTrace = null,
+        settings = emptyMap(),
+        logs = emptyList(),
+    )
+
+    private fun setContent(onDone: () -> Unit = {}): ReportStore {
+        val store = ReportStore(storeDir)
+        store.save(report(reportId))
+        val submitter = mockk<ReportSubmitter> { every { isEnabled } returns false }
+        val viewModel = ReportReviewViewModel(
+            SavedStateHandle(mapOf(Routes.REPORT_REVIEW_ARG_ID to reportId)),
+            store,
+            submitter,
+        )
+        composeTestRule.setContent {
+            LibreMailTheme(darkTheme = false, dynamicColor = false) {
+                ReportReviewScreen(onDone = onDone, viewModel = viewModel)
+            }
+        }
+        return store
+    }
+
+    @Test
+    fun rendersDisclaimer_fieldsAndSubmit() {
+        setContent()
+
+        composeTestRule.onNodeWithText(string(R.string.report_pii_disclaimer_title)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.report_comment_label)).assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.report_email_label)).performScrollTo().assertIsDisplayed()
+        composeTestRule.onNodeWithText(string(R.string.report_submit)).performScrollTo().assertIsDisplayed()
+    }
+
+    @Test
+    fun submit_isDisabled_whenCommentTooShort_orEmailInvalid() {
+        setContent()
+
+        composeTestRule.onNodeWithText(string(R.string.report_submit)).performScrollTo().assertIsNotEnabled()
+    }
+
+    @Test
+    fun submit_isEnabled_afterValidCommentAndEmail() {
+        setContent()
+
+        composeTestRule.onNodeWithText(string(R.string.report_comment_label))
+            .performScrollTo()
+            .performTextInput("x".repeat(ReportSubmissionRules.MIN_COMMENT_LENGTH))
+        composeTestRule.onNodeWithText(string(R.string.report_email_label))
+            .performScrollTo()
+            .performTextInput("me@example.com")
+
+        composeTestRule.onNodeWithText(string(R.string.report_submit)).performScrollTo().assertIsEnabled()
+    }
+
+    @Test
+    fun tappingDiscard_deletesReport_andLeavesTheScreen() {
+        var done = false
+        val store = setContent(onDone = { done = true })
+
+        composeTestRule.onNodeWithText(string(R.string.report_discard)).performScrollTo().performClick()
+
+        // Discard removes the row; the screen then auto-navigates away once it observes it is gone.
+        composeTestRule.waitUntil(5_000) { store.find(reportId) == null && done }
+    }
+}

app/src/androidTest/kotlin/org/libremail/ui/settings/SignatureEditScreenTest.kt

@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+package org.libremail.ui.settings
+
+import android.content.Context
+import androidx.activity.ComponentActivity
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.junit4.createAndroidComposeRule
+import androidx.compose.ui.test.onAllNodesWithText
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.performTextInput
+import androidx.compose.ui.test.performTextReplacement
+import androidx.lifecycle.SavedStateHandle
+import androidx.room.Room
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import kotlinx.coroutines.runBlocking
+import org.junit.After
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.libremail.R
+import org.libremail.data.local.AccountDatabase
+import org.libremail.data.local.entity.AccountEntity
+import org.libremail.data.local.entity.ServerConfigEmbedded
+import org.libremail.data.settings.SignatureRepository
+import org.libremail.ui.navigation.Routes
+import org.libremail.ui.theme.LibreMailTheme
+
+/**
+ * End-to-end UI test for [SignatureEditScreen] + [SignatureEditViewModel] over a real in-memory Room
+ * DB and [SignatureRepository]: the new-vs-edit title, saving a freshly entered name (round-tripping
+ * through the repository, which makes the account's first signature its default), loading an existing
+ * signature's name into the field, and saving an edit back to the same row.
+ */
+@RunWith(AndroidJUnit4::class)
+class SignatureEditScreenTest {
+
+    @get:Rule
+    val composeTestRule = createAndroidComposeRule<ComponentActivity>()
+
+    private val context: Context =
+        InstrumentationRegistry.getInstrumentation().targetContext.applicationContext
+    private val accountId = "imap:a"
+
+    private lateinit var db: AccountDatabase
+    private lateinit var repository: SignatureRepository
+
+    @Before
+    fun setUp() {
+        db = Room.inMemoryDatabaseBuilder(context, AccountDatabase::class.java).build()
+        repository = SignatureRepository(db.signatureDao())
+        // Signatures foreign-key to an account row, so the parent account must exist first.
+        runBlocking {
+            db.accountDao().upsert(
+                AccountEntity(
+                    id = accountId,
+                    email = "a@example.org",
+                    displayName = "A",
+                    authType = "PASSWORD_IMAP",
+                    imap = ServerConfigEmbedded("imap.example.org", 993, "SSL_TLS"),
+                    smtp = ServerConfigEmbedded("smtp.example.org", 465, "SSL_TLS"),
+                ),
+            )
+        }
+    }
+
+    @After
+    fun tearDown() = db.close()
+
+    private fun string(resId: Int) = composeTestRule.activity.getString(resId)
+
+    private fun setContent(signatureId: String? = null, onBack: () -> Unit = {}) {
+        val args = buildMap {
+            put(Routes.SIGNATURE_EDIT_ARG_ACCOUNT, accountId)
+            if (signatureId != null) put(Routes.SIGNATURE_EDIT_ARG_ID, signatureId)
+        }
+        val viewModel = SignatureEditViewModel(SavedStateHandle(args), repository)
+        composeTestRule.setContent {
+            LibreMailTheme(darkTheme = false, dynamicColor = false) {
+                SignatureEditScreen(onBack = onBack, viewModel = viewModel)
+            }
+        }
+    }
+
+    private fun waitForText(text: String) = composeTestRule.waitUntil(5_000) {
+        composeTestRule.onAllNodesWithText(text).fetchSemanticsNodes().isNotEmpty()
+    }
+
+    @Test
+    fun newSignature_showsNewTitle() {
+        setContent(signatureId = null)
+
+        composeTestRule.onNodeWithText(string(R.string.signature_new_title)).assertIsDisplayed()
+    }
+
+    @Test
+    fun newSignature_savingEnteredName_persistsViaRepository() {
+        var backInvoked = false
+        setContent(signatureId = null, onBack = { backInvoked = true })
+
+        composeTestRule.onNodeWithText(string(R.string.signature_name)).performTextInput("Work")
+        composeTestRule.onNodeWithText(string(R.string.signature_save)).performClick()
+
+        // The save round-trips to the DB: the first signature created becomes the account's default.
+        composeTestRule.waitUntil(5_000) {
+            runBlocking { repository.getDefault(accountId)?.name } == "Work" && backInvoked
+        }
+    }
+
+    @Test
+    fun existingSignature_showsEditTitle_andPrefillsName() {
+        val id = runBlocking { repository.create(accountId, "Personal", "<p>hi</p>") }
+        setContent(signatureId = id)
+        waitForText("Personal")
+
+        composeTestRule.onNodeWithText(string(R.string.signature_edit_title)).assertIsDisplayed()
+        composeTestRule.onNodeWithText("Personal").assertIsDisplayed()
+    }
+
+    @Test
+    fun existingSignature_savingRenamedName_updatesTheSameRow() {
+        val id = runBlocking { repository.create(accountId, "Personal", "<p>hi</p>") }
+        setContent(signatureId = id)
+        waitForText("Personal")
+
+        composeTestRule.onNodeWithText("Personal").performTextReplacement("Renamed")
+        composeTestRule.onNodeWithText(string(R.string.signature_save)).performClick()
+
+        composeTestRule.waitUntil(5_000) {
+            runBlocking { repository.get(id)?.name } == "Renamed"
+        }
+    }
+}