content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.carbondata.core.scan.expression;
  
  import org.apache.carbondata.core.metadata.datatype.DataType;
  import org.apache.carbondata.core.metadata.datatype.DataTypes;
  import org.apache.carbondata.core.scan.filter.intf.RowImpl;
  
  import mockit.Mock;
  import mockit.MockUp;
  import org.junit.Before;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  
  public class ColumnExpressionTest {
  
    private ColumnExpression columnExpression;
  
    @Before public void setUp() {
      String columnName = "IMEI";
      DataType dataType = DataTypes.STRING;
      columnExpression = new ColumnExpression(columnName, dataType);
    }
  
    @Test public void testEvaluate() {
      RowImpl rowImpl = new RowImpl();
      rowImpl.setValues(new Integer[] { 1 });
      new MockUp<RowImpl>() {
        @Mock public Object getVal(int index) {
          return 1;
        }
      };
      ExpressionResult expectedValue = new ExpressionResult(DataTypes.INT, 1);
      assertEquals(expectedValue, columnExpression.evaluate(rowImpl));
      assertEquals(1, rowImpl.size());
    }
  
    @Test public void testEvaluateForNullValue() {
      RowImpl rowImpl = new RowImpl();
      rowImpl.setValues(null);
      new MockUp<RowImpl>() {
        @Mock public Object getVal(int index) {
          return null;
        }
      };
      ExpressionResult expectedValue = new ExpressionResult(null);
      assertEquals(expectedValue, columnExpression.evaluate(rowImpl));
    }
  
    @Test public void testGetString() {
      String actualValue = columnExpression.getString();
      String expectedValue = "ColumnExpression(IMEI)";
      assertEquals(expectedValue, actualValue);
    }
  }
  