I'm using robolectric to test an activity that makes use of Google Analytics. Unfortunately, whenever I try to start up the activity I get the following exception
android.database.SQLException
at com.xtremelabs.robolectric.shadows.ShadowSQLiteDatabase.execSQL(ShadowSQLiteDatabase.java:149)
at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java)
at com.google.android.apps.analytics.PersistentEventStore$DataBaseHelper.onCreate(Unknown Source)
at com.xtremelabs.robolectric.shadows.ShadowSQLiteOpenHelper.getWritableDatabase(ShadowSQLiteOpenHelper.java:52)
at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java)
at com.google.android.apps.analytics.PersistentEventStore.<init>(Unknown Source)
at com.google.android.apps.analytics.GoogleAnalyticsTracker.start(Unknown Source)
at com.google.android.apps.analytics.GoogleAnalyticsTracker.start(Unknown Source)
...
Caused by: org.h2.jdbc.JdbcSQLException: Syntax error in SQL statement "CREATE TABLE EVENTS ( 'event_id'[*] BIGINT(19) PRIMARY KEY AUTO_INCREMENT NOT NULL, 'user_id' BIGINT(19) NOT NULL, 'account_id' CHAR(256) NOT NULL, 'random_val' BIGINT(19) NOT NULL, 'timestamp_first' BIGINT(19) NOT NULL, 'timestamp_previous' BIGINT(19) NOT NULL, 'times开发者_StackOverflowtamp_current' BIGINT(19) NOT NULL, 'visits' BIGINT(19) NOT NULL, 'category' CHAR(256) NOT NULL, 'action' CHAR(256) NOT NULL, 'label' CHAR(256), 'value' BIGINT(19), 'screen_width' BIGINT(19), 'screen_height' BIGINT(19)); "; expected "identifier"; SQL statement:
CREATE TABLE events ( 'event_id' bigint(19) PRIMARY KEY auto_increment NOT NULL, 'user_id' bigint(19) NOT NULL, 'account_id' CHAR(256) NOT NULL, 'random_val' bigint(19) NOT NULL, 'timestamp_first' bigint(19) NOT NULL, 'timestamp_previous' bigint(19) NOT NULL, 'timestamp_current' bigint(19) NOT NULL, 'visits' bigint(19) NOT NULL, 'category' CHAR(256) NOT NULL, 'action' CHAR(256) NOT NULL, 'label' CHAR(256), 'value' bigint(19), 'screen_width' bigint(19), 'screen_height' bigint(19)); [42001-147]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:327)
at org.h2.message.DbException.get(DbException.java:167)
at org.h2.message.DbException.getSyntaxError(DbException.java:192)
at org.h2.command.Parser.readColumnIdentifier(Parser.java:2694)
at org.h2.command.Parser.parseCreateTable(Parser.java:4975)
at org.h2.command.Parser.parseCreate(Parser.java:3705)
at org.h2.command.Parser.parsePrepared(Parser.java:320)
at org.h2.command.Parser.parse(Parser.java:275)
at org.h2.command.Parser.parse(Parser.java:247)
at org.h2.command.Parser.prepare(Parser.java:201)
at org.h2.command.Parser.prepareCommand(Parser.java:214)
at org.h2.engine.Session.prepareLocal(Session.java:425)
at org.h2.engine.Session.prepareCommand(Session.java:374)
at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1056)
at org.h2.jdbc.JdbcStatement.executeInternal(JdbcStatement.java:165)
at org.h2.jdbc.JdbcStatement.execute(JdbcStatement.java:153)
at com.xtremelabs.robolectric.shadows.ShadowSQLiteDatabase.execSQL(ShadowSQLiteDatabase.java:147)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.xtremelabs.robolectric.bytecode.ShadowWrangler.methodInvoked(ShadowWrangler.java:87)
at com.xtremelabs.robolectric.bytecode.RobolectricInternals.methodInvoked(RobolectricInternals.java:110)
at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java)
at com.google.android.apps.analytics.PersistentEventStore$DataBaseHelper.onCreate(Unknown Source)
at com.xtremelabs.robolectric.shadows.ShadowSQLiteOpenHelper.getWritableDatabase(ShadowSQLiteOpenHelper.java:52)
The problem is that Android uses SQLite databases, but robolectric is using H2 which support a slightly different flavor of SQL.
What's the easiest way to get around this problem?
Robolectric now provides the @UsingDatabaseMap annotation so that other databases can easily be used with Roboelectric. (Currently this requires the SNAPSHOT version of Robolectric, Robolectric-1.0-RC5-SNAPSHOT)
If anyone wishes to use SQLite with Robolectric, I recommend they check out my project on github which provides the SQLiteMap class so one can use SQLite with Robolectric.
https://github.com/cessationoftime/robolectric-sqlite/wiki
The result is test classes annotated to use the SQLite database instead of H2:
@UsingDatabaseMap(SQLiteMap.class)
@RunWith(RobolectricTestRunner.class)
public class DaoTest {
@Test
public void RobolectricSQLiteTest() {
}
}
I was able to get most of the way there by implementing my own Shadow class for the SQLiteDatabase and binding it in a custom test runner. You can probably bind it in your test setup methods instead if you're not using a custom test runner.
public class MyRobolectricTestRunner extends RobolectricTestRunner {
public InjectedTestRunner(Class<?> testClass) throws InitializationError {
super(testClass);
}
@Override
protected void bindShadowClasses() {
super.bindShadowClasses();
Robolectric.bindShadowClass(ShadowRealSQLiteDatabase.class);
}
@Implements(SQLiteDatabase.class)
public static class ShadowRealSQLiteDatabase extends ShadowSQLiteDatabase {
protected static Connection connection;
// Specify the SQLite JDBC driver
@Implementation
public static SQLiteDatabase openDatabase(String path, SQLiteDatabase.CursorFactory factory, int flags) {
try {
Class.forName("org.sqlite.JDBC").newInstance();
final Field f = ShadowSQLiteDatabase.class.getDeclaredField("connection");
f.setAccessible(true);
connection = DriverManager.getConnection("jdbc:sqlite:mem:");
f.set(null, connection );
} catch (Exception e) {
throw new RuntimeException("SQL exception in openDatabase", e);
}
return newInstanceOf(SQLiteDatabase.class);
}
// Bypass TYPE_FORWARD_ONLY by calling next instead of first: http://stackoverflow.com/questions/2260575/mysql-java-exception-before-start-of-result-set/2260592#2260592
@Implementation
public long insert(String table, String nullColumnHack, ContentValues values) {
SQLite.SQLStringAndBindings sqlInsertString = buildInsertString(table, values);
try {
PreparedStatement statement = connection.prepareStatement(sqlInsertString.sql, Statement.RETURN_GENERATED_KEYS);
Iterator<Object> columns = sqlInsertString.columnValues.iterator();
int i = 1;
while (columns.hasNext()) {
statement.setObject(i++, columns.next());
}
statement.executeUpdate();
ResultSet resultSet = statement.getGeneratedKeys();
if (resultSet.next()) {
return resultSet.getLong(1);
}
} catch (SQLException e) {
throw new RuntimeException("SQL exception in insert", e);
}
return -1;
}
// Bypass ShadowSQLiteDatabase.execSQL auto_increment hack
@Implementation
public void execSQL(String sql) throws android.database.SQLException {
if (!isOpen()) {
throw new IllegalStateException("database not open");
}
try {
connection.createStatement().execute(sql);
} catch (java.sql.SQLException e) {
android.database.SQLException ase = new android.database.SQLException();
ase.initCause(e);
throw ase;
}
}
}
}
You'll need com.zentus v056 sqlite-jdbc driver in your classpath.
I've verified that this uses SQLite instead of H2, although I'm getting a new error with this solution:
Caused by: java.sql.SQLException: NYI
at org.sqlite.Conn.prepareStatement(Conn.java:217)
at com.groupon.InjectedTestRunner$ShadowRealSQLiteDatabase.insert(InjectedTestRunner.java:94)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.xtremelabs.robolectric.bytecode.ShadowWrangler.methodInvoked(ShadowWrangler.java:87)
at com.xtremelabs.robolectric.bytecode.RobolectricInternals.methodInvoked(RobolectricInternals.java:110)
at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java)
at com.google.android.apps.analytics.PersistentEventStore$DataBaseHelper.createCustomVariableTables(Unknown Source)
at com.google.android.apps.analytics.PersistentEventStore$DataBaseHelper.onCreate(Unknown Source)
at com.xtremelabs.robolectric.shadows.ShadowSQLiteOpenHelper.getWritableDatabase(ShadowSQLiteOpenHelper.java:52)
精彩评论