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Diffstat (limited to 'test-runner/android/test/DatabaseTestUtils.java')
-rw-r--r-- | test-runner/android/test/DatabaseTestUtils.java | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/test-runner/android/test/DatabaseTestUtils.java b/test-runner/android/test/DatabaseTestUtils.java new file mode 100644 index 0000000..23e0aba --- /dev/null +++ b/test-runner/android/test/DatabaseTestUtils.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2008 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 android.test; + +import com.google.android.collect.Sets; + +import android.database.sqlite.SQLiteDatabase; +import android.database.Cursor; + +import java.util.Set; + +/** + * A collection of utilities for writing unit tests for database code. + * @hide pending API council approval + */ +public class DatabaseTestUtils { + + /** + * Compares the schema of two databases and asserts that they are equal. + * @param expectedDb the db that is known to have the correct schema + * @param db the db whose schema should be checked + */ + public static void assertSchemaEquals(SQLiteDatabase expectedDb, SQLiteDatabase db) { + Set<String> expectedSchema = getSchemaSet(expectedDb); + Set<String> schema = getSchemaSet(db); + MoreAsserts.assertEquals(expectedSchema, schema); + } + + private static Set<String> getSchemaSet(SQLiteDatabase db) { + Set<String> schemaSet = Sets.newHashSet(); + + Cursor entityCursor = db.rawQuery("SELECT sql FROM sqlite_master", null); + try { + while (entityCursor.moveToNext()) { + String sql = entityCursor.getString(0); + schemaSet.add(sql); + } + } finally { + entityCursor.close(); + } + return schemaSet; + } +} |