feat: add centralized TestTags and testTag modifiers on all key UI components (Closes #31)

Create TestTags.kt with tag generators for attribute cards, talent cards,
roll buttons, nav items, and panel placeholders. Apply testTag modifiers
to Attribute, Talent, and App navigation/toolbar composables.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

sharedUI/src/commonMain/kotlin/org/shahondin1624/App.kt

@@ -17,9 +17,11 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.unit.dp
 import kotlinx.coroutines.launch
 import org.jetbrains.compose.ui.tooling.preview.Preview
+import org.shahondin1624.lib.components.TestTags
 import org.shahondin1624.lib.components.UiConstants
 import org.shahondin1624.lib.components.charactermodel.attributespage.AttributesPage
 import org.shahondin1624.model.EXAMPLE_CHARACTER
@@ -73,9 +75,11 @@ private fun AppContent(
                     onClick = {
                         scope.launch { drawerState.close() }
                     },
-                    modifier = Modifier.padding(horizontal = 12.dp, vertical = 4.dp)
+                    modifier = Modifier
+                        .padding(horizontal = 12.dp, vertical = 4.dp)
+                        .testTag(TestTags.NAV_CHARACTER_SHEET)
                 )
-                
+
                 NavigationDrawerItem(
                     icon = { Icon(Icons.Default.Settings, contentDescription = null) },
                     label = { Text("Settings") },
@@ -84,7 +88,9 @@ private fun AppContent(
                         scope.launch { drawerState.close() }
                         // TODO: Navigate to settings
                     },
-                    modifier = Modifier.padding(horizontal = 12.dp, vertical = 4.dp)
+                    modifier = Modifier
+                        .padding(horizontal = 12.dp, vertical = 4.dp)
+                        .testTag(TestTags.NAV_SETTINGS)
                 )
             }
         }
@@ -95,20 +101,26 @@ private fun AppContent(
                 TopAppBar(
                     title = { Text("Shadowrun Character Sheet") },
                     navigationIcon = {
-                        IconButton(onClick = {
+                        IconButton(
-                            scope.launch {
+                            onClick = {
-                                if (drawerState.isClosed) {
+                                scope.launch {
-                                    drawerState.open()
+                                    if (drawerState.isClosed) {
-                                } else {
+                                        drawerState.open()
-                                    drawerState.close()
+                                    } else {
+                                        drawerState.close()
+                                    }
                                 }
-                            }
+                            },
-                        }) {
+                            modifier = Modifier.testTag(TestTags.MENU_BUTTON)
+                        ) {
                             Icon(Icons.Default.Menu, contentDescription = "Menu")
                         }
                     },
                     actions = {
-                        IconButton(onClick = { isDark = !isDark }) {
+                        IconButton(
+                            onClick = { isDark = !isDark },
+                            modifier = Modifier.testTag(TestTags.THEME_TOGGLE)
+                        ) {
                             Icon(
                                 imageVector = if (isDark) {
                                     Icons.Default.LightMode

sharedUI/src/commonMain/kotlin/org/shahondin1624/lib/components/TestTags.kt

@@ -0,0 +1,35 @@
+package org.shahondin1624.lib.components
+
+/**
+ * Centralized test tag strings for Compose UI test identification.
+ *
+ * Usage: `Modifier.testTag(TestTags.attributeCard("Body"))`
+ *
+ * Tags that reference components not yet implemented are included so that
+ * future stories can import them without creating a new file.
+ */
+object TestTags {
+    // --- Attribute cards ---
+    fun attributeCard(type: String): String = "attribute_card_${type.lowercase()}"
+
+    // --- Talent cards ---
+    fun talentCard(name: String): String = "talent_card_${name.lowercase().replace(" ", "_")}"
+
+    // --- Panels (defined for future character display stories) ---
+    const val PANEL_CHARACTER_HEADER = "panel_character_header"
+    const val PANEL_RESOURCES = "panel_resources"
+    const val PANEL_DERIVED_ATTRIBUTES = "panel_derived_attributes"
+    const val PANEL_DAMAGE_MONITOR = "panel_damage_monitor"
+
+    // --- Navigation items ---
+    const val NAV_CHARACTER_SHEET = "nav_character_sheet"
+    const val NAV_SETTINGS = "nav_settings"
+
+    // --- Dice / roll buttons ---
+    fun rollButton(name: String): String = "roll_button_${name.lowercase().replace(" ", "_")}"
+
+    // --- Top app bar ---
+    const val TOP_APP_BAR = "top_app_bar"
+    const val THEME_TOGGLE = "theme_toggle"
+    const val MENU_BUTTON = "menu_button"
+}

sharedUI/src/commonMain/kotlin/org/shahondin1624/lib/components/charactermodel/attributespage/Attribute.kt

@@ -14,9 +14,11 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.ColorFilter
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import org.jetbrains.compose.resources.painterResource
+import org.shahondin1624.lib.components.TestTags
 import org.shahondin1624.lib.components.UiConstants.SMALL_PADDING
 import org.shahondin1624.lib.functions.DiceRoll
 import org.shahondin1624.model.attributes.Attribute
@@ -33,7 +35,7 @@ fun Attribute(
 ) {
     var isInDarkMode by LocalThemeIsDark.current
     val textColor = if (isInDarkMode) Color.Black else Color.White
-    Card {
+    Card(modifier = Modifier.testTag(TestTags.attributeCard(attribute.type.name))) {
         Row(
             verticalAlignment = androidx.compose.ui.Alignment.CenterVertically,
             horizontalArrangement = Arrangement.Start
@@ -64,7 +66,9 @@ fun Attribute(
                     val result = attribute.test()
                     onRoll(result)
                 },
-                modifier = Modifier.padding(end = SMALL_PADDING)
+                modifier = Modifier
+                    .padding(end = SMALL_PADDING)
+                    .testTag(TestTags.rollButton(attribute.type.name))
             ) {
                 Image(
                     painter = painterResource(Res.drawable.dice),

sharedUI/src/commonMain/kotlin/org/shahondin1624/lib/components/charactermodel/attributespage/Talent.kt

@@ -20,9 +20,11 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.ColorFilter
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import org.jetbrains.compose.resources.painterResource
+import org.shahondin1624.lib.components.TestTags
 import org.shahondin1624.lib.components.UiConstants.SMALL_PADDING
 import org.shahondin1624.lib.functions.DiceRoll
 import org.shahondin1624.model.attributes.Attributes
@@ -41,7 +43,7 @@ fun Talent(
 ) {
     var isInDarkMode by LocalThemeIsDark.current
     val textColor = if (isInDarkMode) Color.Black else Color.White
-    Card {
+    Card(modifier = Modifier.testTag(TestTags.talentCard(talent.name))) {
         Row(
             verticalAlignment = Alignment.CenterVertically,
             horizontalArrangement = Arrangement.Start
@@ -84,7 +86,9 @@ fun Talent(
                     val result = talent.test(modifiers = emptyList(), attributes = attributes)
                     onRoll(result)
                 },
-                modifier = Modifier.padding(end = SMALL_PADDING)
+                modifier = Modifier
+                    .padding(end = SMALL_PADDING)
+                    .testTag(TestTags.rollButton(talent.name))
             ) {
                 Image(
                     painter = painterResource(Res.drawable.dice),

sharedUI/src/commonTest/kotlin/org/shahondin1624/TestTagsTest.kt

@@ -0,0 +1,58 @@
+package org.shahondin1624
+
+import org.shahondin1624.lib.components.TestTags
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+class TestTagsTest {
+
+    @Test
+    fun attributeCardTagFormat() {
+        assertEquals("attribute_card_body", TestTags.attributeCard("Body"))
+        assertEquals("attribute_card_agility", TestTags.attributeCard("Agility"))
+        assertEquals("attribute_card_charisma", TestTags.attributeCard("Charisma"))
+    }
+
+    @Test
+    fun talentCardTagFormat() {
+        assertEquals("talent_card_firearms", TestTags.talentCard("Firearms"))
+        assertEquals("talent_card_close_combat", TestTags.talentCard("Close Combat"))
+    }
+
+    @Test
+    fun rollButtonTagFormat() {
+        assertEquals("roll_button_body", TestTags.rollButton("Body"))
+        assertEquals("roll_button_close_combat", TestTags.rollButton("Close Combat"))
+    }
+
+    @Test
+    fun navTagsAreDefined() {
+        assertEquals("nav_character_sheet", TestTags.NAV_CHARACTER_SHEET)
+        assertEquals("nav_settings", TestTags.NAV_SETTINGS)
+    }
+
+    @Test
+    fun panelTagsAreDefined() {
+        assertTrue(TestTags.PANEL_CHARACTER_HEADER.isNotBlank())
+        assertTrue(TestTags.PANEL_RESOURCES.isNotBlank())
+        assertTrue(TestTags.PANEL_DERIVED_ATTRIBUTES.isNotBlank())
+        assertTrue(TestTags.PANEL_DAMAGE_MONITOR.isNotBlank())
+    }
+
+    @Test
+    fun allTagsAreUnique() {
+        val staticTags = listOf(
+            TestTags.PANEL_CHARACTER_HEADER,
+            TestTags.PANEL_RESOURCES,
+            TestTags.PANEL_DERIVED_ATTRIBUTES,
+            TestTags.PANEL_DAMAGE_MONITOR,
+            TestTags.NAV_CHARACTER_SHEET,
+            TestTags.NAV_SETTINGS,
+            TestTags.TOP_APP_BAR,
+            TestTags.THEME_TOGGLE,
+            TestTags.MENU_BUTTON
+        )
+        assertEquals(staticTags.size, staticTags.toSet().size, "All static tags should be unique")
+    }
+}