content: package com.alibaba.druid.bvt.filter.config;
  
  import com.alibaba.druid.filter.Filter;
  import com.alibaba.druid.filter.config.ConfigFilter;
  import com.alibaba.druid.proxy.jdbc.DataSourceProxy;
  import com.alibaba.druid.stat.JdbcDataSourceStat;
  import junit.framework.TestCase;
  
  import java.sql.Driver;
  import java.util.List;
  import java.util.Properties;
  
  import static org.junit.Assert.assertThrows;
  
  public class ConfigFilterTest6 extends TestCase {
      public void testInitFastFail() {
          ConfigFilter filter = new ConfigFilter();
          IllegalArgumentException exception =
                  assertThrows(IllegalArgumentException.class, () -> filter.init(new DataSourceProxyImpl()));
          assertEquals("ConfigLoader only support DruidDataSource", exception.getMessage());
      }
  
      static class DataSourceProxyImpl implements DataSourceProxy {
          @Override
          public JdbcDataSourceStat getDataSourceStat() {
              return null;
          }
  
          @Override
          public long getDataSourceId() {
              return 0;
          }
  
          @Override
          public String getName() {
              return null;
          }
  
          @Override
          public String getDbType() {
              return null;
          }
  
          @Override
          public Driver getRawDriver() {
              return null;
          }
  
          @Override
          public String getUrl() {
              return null;
          }
  
          @Override
          public String getRawJdbcUrl() {
              return null;
          }
  
          @Override
          public List<Filter> getProxyFilters() {
              return null;
          }
  
          @Override
          public long createConnectionId() {
              return 0;
          }
  
          @Override
          public long createStatementId() {
              return 0;
          }
  
          @Override
          public long createResultSetId() {
              return 0;
          }
  
          @Override
          public long createMetaDataId() {
              return 0;
          }
  
          @Override
          public long createTransactionId() {
              return 0;
          }
  
          @Override
          public Properties getConnectProperties() {
              return null;
          }
      }
  }
  