Screenshot tests for ETM

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

.drone.yml

@@ -67,6 +67,7 @@ steps:
     commands:
       - scripts/checkIfRunDrone.sh $GIT_USERNAME $GIT_TOKEN $DRONE_PULL_REQUEST || exit 0
       - emulator-headless -avd android-27 -no-snapshot -gpu swiftshader_indirect -no-window -no-audio -skin 500x833 &
+      - sed -i s'#<bool name="is_beta">false</bool>#<bool name="is_beta">true</bool>#'g src/main/res/values/setup.xml
       - ./gradlew assembleGplay
       - ./gradlew assembleGplayDebug
       - scripts/wait_for_emulator.sh

src/androidTest/java/com/nextcloud/client/etm/EtmActivityTest.kt

@@ -0,0 +1,63 @@
+/*
+ *
+ * Nextcloud Android client application
+ *
+ * @author Tobias Kaminsky
+ * Copyright (C) 2020 Tobias Kaminsky
+ * Copyright (C) 2020 Nextcloud GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.nextcloud.client.etm
+
+import android.app.Activity
+import androidx.test.espresso.intent.rule.IntentsTestRule
+import androidx.test.internal.runner.junit4.statement.UiThreadStatement
+import com.facebook.testing.screenshot.Screenshot
+import com.owncloud.android.AbstractIT
+import org.junit.Rule
+import org.junit.Test
+
+class EtmActivityTest : AbstractIT() {
+    @get:Rule
+    var activityRule = IntentsTestRule(EtmActivity::class.java, true, false)
+
+    @Test
+    fun overview() {
+        val sut: Activity = activityRule.launchActivity(null)
+
+        waitForIdleSync()
+
+        Screenshot.snapActivity(sut).record()
+    }
+
+    @Test
+    fun preferences() {
+        val sut: EtmActivity = activityRule.launchActivity(null)
+
+        UiThreadStatement.runOnUiThread { sut.vm.onPageSelected(0) }
+
+        Screenshot.snapActivity(sut).record()
+    }
+
+    @Test
+    fun accounts() {
+        val sut: EtmActivity = activityRule.launchActivity(null)
+
+        UiThreadStatement.runOnUiThread { sut.vm.onPageSelected(1) }
+
+        Screenshot.snapActivity(sut).record()
+    }
+}