add robot for settings feature ui tests

feature/settings/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsDialogRobot.kt

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ *   Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *       https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
+ *   limitations under the License.
+ */
+
+package com.google.samples.apps.nowinandroid.feature.settings
+
+import androidx.activity.ComponentActivity
+import androidx.annotation.StringRes
+import androidx.compose.ui.test.assertIsSelected
+import androidx.compose.ui.test.junit4.AndroidComposeTestRule
+import androidx.compose.ui.test.onNodeWithText
+import androidx.test.ext.junit.rules.ActivityScenarioRule
+
+internal class SettingsDialogRobot(
+    private val composeTestRule: AndroidComposeTestRule<ActivityScenarioRule<ComponentActivity>, ComponentActivity>
+) {
+    fun setContent(settingsUiState: SettingsUiState) {
+        composeTestRule.setContent {
+            SettingsDialog(
+                settingsUiState = settingsUiState,
+                onDismiss = { },
+                onChangeThemeBrand = {},
+                onChangeDarkThemeConfig = {}
+            )
+        }
+    }
+
+    fun loadingIndicatorExists() {
+        composeTestRule
+            .onNodeWithText(getString(R.string.loading))
+            .assertExists()
+    }
+
+    fun settingExists(name: String) {
+        composeTestRule
+            .onNodeWithText(name)
+            .assertExists()
+    }
+
+    fun settingIsSelected(name: String) {
+        composeTestRule
+            .onNodeWithText(name)
+            .assertIsSelected()
+    }
+
+    fun getString(@StringRes stringId: Int) =
+        composeTestRule.activity.resources.getString(stringId)
+}

feature/settings/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsDialogTest.kt

@@ -17,9 +17,9 @@
 package com.google.samples.apps.nowinandroid.feature.settings
 
 import androidx.activity.ComponentActivity
-import androidx.compose.ui.test.assertIsSelected
+import androidx.compose.ui.test.junit4.AndroidComposeTestRule
 import androidx.compose.ui.test.junit4.createAndroidComposeRule
-import androidx.compose.ui.test.onNodeWithText
+import androidx.test.ext.junit.rules.ActivityScenarioRule
 import com.google.samples.apps.nowinandroid.core.model.data.DarkThemeConfig.DARK
 import com.google.samples.apps.nowinandroid.core.model.data.ThemeBrand.ANDROID
 import com.google.samples.apps.nowinandroid.feature.settings.SettingsUiState.Loading
@@ -32,74 +32,60 @@ class SettingsDialogTest {
     @get:Rule
     val composeTestRule = createAndroidComposeRule<ComponentActivity>()
 
-    private fun getString(id: Int) = composeTestRule.activity.resources.getString(id)
-
     @Test
     fun whenLoading_showsLoadingText() {
-
-        composeTestRule.setContent {
-            SettingsDialog(
-                settingsUiState = Loading,
-                onDismiss = { },
-                onChangeThemeBrand = {},
-                onChangeDarkThemeConfig = {}
-            )
+        launchSettingsDialogRobot(composeTestRule, Loading) {
+            loadingIndicatorExists()
         }
-
-        composeTestRule
-            .onNodeWithText(getString(R.string.loading))
-            .assertExists()
     }
 
     @Test
     fun whenStateIsSuccess_allSettingsAreDisplayed() {
-        composeTestRule.setContent {
-            SettingsDialog(
-                settingsUiState = Success(
-                    UserEditableSettings(
-                        brand = ANDROID,
-                        darkThemeConfig = DARK
-                    )
-                ),
-                onDismiss = { },
-                onChangeThemeBrand = {},
-                onChangeDarkThemeConfig = {}
+        launchSettingsDialogRobot(
+            composeTestRule,
+            Success(
+                UserEditableSettings(
+                    brand = ANDROID,
+                    darkThemeConfig = DARK
+                )
             )
-        }
+        ) {
+            settingExists(getString(R.string.brand_default))
+            settingExists(getString(R.string.brand_android))
+            settingExists(getString(R.string.dark_mode_config_system_default))
 
-        // Check that all the possible settings are displayed.
-        composeTestRule.onNodeWithText(getString(R.string.brand_default)).assertExists()
-        composeTestRule.onNodeWithText(getString(R.string.brand_android)).assertExists()
-        composeTestRule.onNodeWithText(
-            getString(R.string.dark_mode_config_system_default)
-        ).assertExists()
-        composeTestRule.onNodeWithText(getString(R.string.dark_mode_config_light)).assertExists()
-        composeTestRule.onNodeWithText(getString(R.string.dark_mode_config_dark)).assertExists()
+            settingExists(getString(R.string.dark_mode_config_light))
+            settingExists(getString(R.string.dark_mode_config_dark))
 
-        // Check that the correct settings are selected.
-        composeTestRule.onNodeWithText(getString(R.string.brand_android)).assertIsSelected()
-        composeTestRule.onNodeWithText(getString(R.string.dark_mode_config_dark)).assertIsSelected()
+            settingIsSelected(getString(R.string.brand_android))
+            settingIsSelected(getString(R.string.dark_mode_config_dark))
+        }
     }
 
     @Test
     fun whenStateIsSuccess_allLinksAreDisplayed() {
-        composeTestRule.setContent {
-            SettingsDialog(
-                settingsUiState = Success(
-                    UserEditableSettings(
-                        brand = ANDROID,
-                        darkThemeConfig = DARK
-                    )
-                ),
-                onDismiss = { },
-                onChangeThemeBrand = {},
-                onChangeDarkThemeConfig = {}
+        launchSettingsDialogRobot(
+            composeTestRule,
+            Success(
+                UserEditableSettings(
+                    brand = ANDROID,
+                    darkThemeConfig = DARK
+                )
             )
+        ) {
+            settingExists(getString(R.string.privacy_policy))
+            settingExists(getString(R.string.licenses))
+            settingExists(getString(R.string.brand_guidelines))
+            settingExists(getString(R.string.feedback))
         }
-
-        composeTestRule.onNodeWithText(getString(R.string.privacy_policy)).assertExists()
-        composeTestRule.onNodeWithText(getString(R.string.licenses)).assertExists()
-        composeTestRule.onNodeWithText(getString(R.string.brand_guidelines)).assertExists()
-        composeTestRule.onNodeWithText(getString(R.string.feedback)).assertExists()
     }
 }
+
+private fun launchSettingsDialogRobot(
+    composeTestRule: AndroidComposeTestRule<ActivityScenarioRule<ComponentActivity>, ComponentActivity>,
+    settingsUiState: SettingsUiState,
+    func: SettingsDialogRobot.() -> Unit
+) = SettingsDialogRobot(composeTestRule).apply {
+    setContent(settingsUiState)
+    func()
+}