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  package org.apache.cayenne.access;
  
  import org.apache.cayenne.DataRow;
  import org.apache.cayenne.ObjectId;
  import org.apache.cayenne.configuration.Constants;
  import org.apache.cayenne.configuration.DefaultRuntimeProperties;
  import org.apache.cayenne.event.MockEventManager;
  
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * A "lightweight" DataRowStore.
   */
  public class MockDataRowStore extends DataRowStore {
  
      private static final Map<String, String> TEST_DEFAULTS = new HashMap<>();
  
      static {
          TEST_DEFAULTS.put(Constants.SNAPSHOT_CACHE_SIZE_PROPERTY, Integer.toString(10));
      }
  
      public MockDataRowStore() {
          super("mock DataRowStore", new DefaultRuntimeProperties(TEST_DEFAULTS), new MockEventManager());
      }
  
      /**
       * A backdoor to add test snapshots.
       */
      public void putSnapshot(ObjectId id, DataRow snapshot) {
          snapshots.put(id, snapshot);
      }
  
      public void putSnapshot(ObjectId id, Map<String, ?> snapshot) {
          snapshots.put(id, new DataRow(snapshot));
      }
  
      public void putEmptySnapshot(ObjectId id) {
          snapshots.put(id, new DataRow(2));
      }
  
  }
  