Fixed crash when opening Camera Lift suggestion

Bug: 37742959
Test: manual + make RunSettingsRoboTests +
      adb shell am instrument -w com.android.settings.tests.unit
          /android.support.test.runner.AndroidJUnitRunner

Added missing SettingsGateway entry for Camera Lift Trigger settings
fragment.

Change-Id: Iddce7a672b0bb8430e3c7b3c346788fb23970636

src/com/android/settings/core/gateway/SettingsGateway.java

@@ -80,6 +80,7 @@ import com.android.settings.fuelgauge.AdvancedPowerUsageDetail;
 import com.android.settings.fuelgauge.BatterySaverSettings;
 import com.android.settings.fuelgauge.PowerUsageSummary;
 import com.android.settings.gestures.AssistGestureSettings;
+import com.android.settings.gestures.CameraLiftTriggerSettings;
 import com.android.settings.gestures.DoubleTapPowerSettings;
 import com.android.settings.gestures.DoubleTapScreenSettings;
 import com.android.settings.gestures.DoubleTwistGestureSettings;
@@ -177,6 +178,7 @@ public class SettingsGateway {
             AccountSyncSettings.class.getName(),
             AssistGestureSettings.class.getName(),
             SwipeToNotificationSettings.class.getName(),
+            CameraLiftTriggerSettings.class.getName(),
             DoubleTapPowerSettings.class.getName(),
             DoubleTapScreenSettings.class.getName(),
             PickupGestureSettings.class.getName(),

tests/unit/src/com/android/settings/CameraLiftTriggerSuggestionActivityTest.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2017 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
+ *
+ *      http://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.android.settings;
+
+import static android.support.test.espresso.Espresso.onView;
+import static android.support.test.espresso.assertion.ViewAssertions.matches;
+import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
+import static android.support.test.espresso.matcher.ViewMatchers.withText;
+import static android.support.test.espresso.matcher.ViewMatchers.hasSibling;
+import static org.hamcrest.Matchers.allOf;
+
+import android.app.Instrumentation;
+import android.content.Context;
+import android.content.Intent;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class CameraLiftTriggerSuggestionActivityTest {
+    private Instrumentation mInstrumentation;
+    private Context mTargetContext;
+
+    @Before
+    public void setUp() throws Exception {
+        mInstrumentation = InstrumentationRegistry.getInstrumentation();
+        mTargetContext = mInstrumentation.getTargetContext();
+    }
+
+    @Test
+    public void launchCameraLiftTriggerSuggestion_shouldNotCrash() {
+        final Intent cameraTriggerSuggestionIntent = new Intent(mTargetContext,
+                Settings.CameraLiftTriggerSuggestionActivity.class);
+        final boolean cameraLiftTriggerEnabled = mTargetContext.getResources()
+                .getBoolean(R.bool.config_cameraLiftTriggerAvailable);
+
+        if (!cameraLiftTriggerEnabled) {
+            return;
+        }
+
+        mInstrumentation.startActivitySync(cameraTriggerSuggestionIntent);
+
+        onView(allOf(withText(R.string.camera_lift_trigger_title),
+                          hasSibling(withText(R.string.camera_lift_trigger_summary))))
+                .check(matches(isDisplayed()));
+    }
+}