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ListExpressionUnitTest.java
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ListExpressionUnitTest.java
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/*
* 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.conditional;
import java.util.List;
import org.apache.carbondata.core.metadata.datatype.DataTypes;
import org.apache.carbondata.core.scan.expression.ColumnExpression;
import org.apache.carbondata.core.scan.expression.Expression;
import org.apache.carbondata.core.scan.expression.ExpressionResult;
import org.apache.carbondata.core.scan.expression.exception.FilterIllegalMemberException;
import org.apache.carbondata.core.scan.expression.exception.FilterUnsupportedException;
import org.apache.carbondata.core.scan.filter.intf.RowImpl;
import org.junit.Test;
import java.util.ArrayList;
import static org.hamcrest.core.Is.is;
import static org.hamcrest.core.IsEqual.equalTo;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
public class ListExpressionUnitTest {
static ListExpression listExpression;
@Test public void test() throws FilterUnsupportedException, FilterIllegalMemberException {
ColumnExpression left = new ColumnExpression("left_name", DataTypes.STRING);
left.setColIndex(0);
ColumnExpression right = new ColumnExpression("right_name", DataTypes.STRING);
right.setColIndex(1);
List<Expression> children = new ArrayList<>();
children.add(left);
children.add(right);
listExpression = new ListExpression(children);
RowImpl value = new RowImpl();
String row = "Row is for left";
String row1 = "I am row 1";
Object objectRow[] = { row, row1 };
value.setValues(objectRow);
String expected_value = "Row is for left";
ExpressionResult result = listExpression.evaluate(value);
assertThat(expected_value, is(equalTo(result.getList().get(0).getString())));
}
}