Upload query text whenever it changes.

Bug: 33266688
Test: make RunSettingsRoboTests
Change-Id: Ie26f9d4ad7460d49305457a7a3066d121e374eab

tests/robotests/src/com/android/settings/SettingsActivityTest.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2016 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 org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.annotation.Config;
+
+import static com.google.common.truth.Truth.assertThat;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class SettingsActivityTest {
+
+    private SettingsActivity mActivity;
+
+    @Test
+    public void testQueryTextChange_shouldUpdate() {
+        final String testQuery = "abc";
+        mActivity = new SettingsActivity();
+
+        assertThat(mActivity.mSearchQuery).isNull();
+        try {
+            mActivity.onQueryTextChange(testQuery);
+        } catch (NullPointerException e) {
+            // Expected, because searchFeatureProvider is not wired up.
+        }
+
+        assertThat(mActivity.mSearchQuery).isEqualTo(testQuery);
+    }
+}