Test for AsssitSettingObserver

Change-Id: I4896a097cd9d898829be04098b6e31766af39c7a
Fix: 35641857
Test: make RunSettingRoboTests

tests/robotests/src/com/android/settings/applications/assist/AssistSettingObserverTest.java

@@ -0,0 +1,52 @@
+/*
+ * 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.applications.assist;
+
+
+import android.net.Uri;
+
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.annotation.Config;
+
+import java.util.List;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class AssistSettingObserverTest {
+
+    private AssistSettingObserver mObserver;
+
+    @Test
+    public void callConstructor_shouldNotCrash() {
+        mObserver = new AssistSettingObserver() {
+            @Override
+            protected List<Uri> getSettingUris() {
+                return null;
+            }
+
+            @Override
+            public void onSettingChange() {
+
+            }
+        };
+    }
+
+}