Load only unique dictionary words

- Move UserDictionarySettings to sub package
- Convert cursor to loader

Fix: 22058788
Test: robotests

Change-Id: I1e8828abee58362b815abc210c044b678bf9d578

tests/robotests/src/com/android/settings/inputmethod/UserDictionaryCursorLoaderTest.java

@@ -0,0 +1,104 @@
+/*
+ * 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.inputmethod;
+
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.ContentProvider;
+import android.content.ContentValues;
+import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.net.Uri;
+import android.provider.UserDictionary;
+
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+import org.robolectric.shadows.ShadowContentResolver;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class UserDictionaryCursorLoaderTest {
+
+    private ContentProvider mContentProvider;
+    private UserDictionaryCursorLoader mLoader;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContentProvider = new FakeProvider();
+        mLoader = new UserDictionaryCursorLoader(RuntimeEnvironment.application, "" /* locale */);
+        ShadowContentResolver.registerProvider(UserDictionary.AUTHORITY, mContentProvider);
+    }
+
+    @Test
+    public void testLoad_shouldRemoveDuplicate() {
+        final Cursor cursor = mLoader.loadInBackground();
+
+        assertThat(cursor.getCount()).isEqualTo(4);
+    }
+
+    public static class FakeProvider extends ContentProvider {
+
+
+        @Override
+        public boolean onCreate() {
+            return false;
+        }
+
+        @Override
+        public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
+                String sortOrder) {
+            final MatrixCursor cursor = new MatrixCursor(
+                    UserDictionaryCursorLoader.QUERY_PROJECTION);
+            cursor.addRow(new Object[]{1, "word1", "shortcut1"});
+            cursor.addRow(new Object[]{2, "word2", "shortcut2"});
+            cursor.addRow(new Object[]{3, "word3", "shortcut3"});
+            cursor.addRow(new Object[]{4, "word3", "shortcut3"});   // dupe of 3
+            cursor.addRow(new Object[]{5, "word5", null});          // no shortcut
+            return cursor;
+        }
+
+        @Override
+        public String getType(Uri uri) {
+            return null;
+        }
+
+        @Override
+        public Uri insert(Uri uri, ContentValues values) {
+            return null;
+        }
+
+        @Override
+        public int delete(Uri uri, String selection, String[] selectionArgs) {
+            return 0;
+        }
+
+        @Override
+        public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
+            return 0;
+        }
+    }
+
+}