Add a HA DataSource implementation

src/test/java/com/alibaba/druid/pool/ha/MockDataSource.java

@@ -0,0 +1,57 @@
+package com.alibaba.druid.pool.ha;
+
+import com.alibaba.druid.mock.MockConnection;
+import com.alibaba.druid.pool.WrapperAdapter;
+
+import javax.sql.DataSource;
+import java.io.PrintWriter;
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.SQLFeatureNotSupportedException;
+import java.util.logging.Logger;
+
+public class MockDataSource extends WrapperAdapter implements DataSource {
+    private String name;
+
+    public MockDataSource(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public Connection getConnection() throws SQLException {
+        return new MockConnection(null, name, null);
+    }
+
+    @Override
+    public Connection getConnection(String username, String password) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public PrintWriter getLogWriter() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void setLogWriter(PrintWriter out) throws SQLException {
+
+    }
+
+    @Override
+    public void setLoginTimeout(int seconds) throws SQLException {
+
+    }
+
+    @Override
+    public int getLoginTimeout() throws SQLException {
+        return 0;
+    }
+
+    public Logger getParentLogger() throws SQLFeatureNotSupportedException {
+        return null;
+    }
+}