services/billing-aws/src/test/java/com/epam/dlab/core/parser/ConditionEvaluateTest.java

/*
 * 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 com.epam.dlab.core.parser;

import static junit.framework.TestCase.assertEquals;

import java.util.List;

import org.junit.Test;

import com.epam.dlab.exceptions.InitializationException;
import com.epam.dlab.exceptions.ParseException;
import com.google.common.collect.Lists;

public class ConditionEvaluateTest {
	private static final List<String> columnNames = Lists.newArrayList("column1", "column2", "column3");
	
	private void checkCondition(boolean excpectedResult, String condition, String ... values
			) throws InitializationException, ParseException {
		ConditionEvaluate c = new ConditionEvaluate(columnNames, condition);
		final List<String> row = Lists.newArrayList(values);
		assertEquals(excpectedResult, c.evaluate(row));
	}

	private void isTrue(String condition, String ... values
			) throws InitializationException, ParseException {
		checkCondition(true, condition, values);
	}

	private void isFalse(String condition, String ... values
			) throws InitializationException, ParseException {
		checkCondition(false, condition, values);
	}

	@Test
	public void mixCondition() throws InitializationException, ParseException {
		String condition = "column1 == 123 && column2 == '456' && column3 > 0.2";
		ConditionEvaluate c = new ConditionEvaluate(columnNames, condition);
		
		List<String> row = Lists.newArrayList("123", "456", "0.5");
		assertEquals(true, c.evaluate(row));
		
		row = Lists.newArrayList("123", "456", "-5");
		assertEquals(false, c.evaluate(row));
		
		isFalse("column1 == 123 || column2 == 321", "321", "123");
		isTrue("column1 == 123 || column2 == 321", "123", "456");
		isTrue("column1 == 123 || column2 == 321", "456", "321");

		isFalse("(column1 == 123 || column2 == 321) && column3 == 5", "321", "123", "5");
		isFalse("(column1 == 123 || column2 == 321) && column3 == 5", "123", "321", "4");
		
		isTrue("(column1 == 123 || column2 == 321) && column3 == 5", "123", "456", "5");
		isTrue("(column1 == 123 || column2 == 321) && column3 == 5", "234", "321", "5");
	}

	@Test
	public void compareInteger() throws InitializationException, ParseException {
		isFalse("column1 == 123", "456");
		isTrue("column1 == 123", "123");
		
		isFalse("column1 != 123", "123");
		isTrue("column1 != 123", "456");

		isFalse("column1 < 123", "123");
		isTrue("column1 < 123", "122");

		isFalse("column1 > 123", "123");
		isTrue("column1 > 123", "124");

		isFalse("column1 <= 123", "124");
		isTrue("column1 <= 123", "123");
		isTrue("column1 <= 123", "122");

		isFalse("column1 >= 123", "122");
		isTrue("column1 >= 123", "123");
		isTrue("column1 >= 123", "124");
	}

	@Test
	public void compareString() throws InitializationException, ParseException {
		isFalse("column1 == 'abc'", "abcd");
		isTrue("column1 == 'abc'", "abc");
		
		isFalse("column1 != 'abc'", "abc");
		isTrue("column1 != 'abc'", "asd");

		isFalse("column1 < 'abc'", "abd");
		isTrue("column1 < 'abc'", "abb");

		isFalse("column1 > 'abc'", "abb");
		isTrue("column1 > 'abc'", "abd");

		isFalse("column1 <= 'abc'", "abd");
		isTrue("column1 <= 'abc'", "abc");
		isTrue("column1 <= 'abc'", "abb");

		isFalse("column1 >= 'abc'", "abb");
		isTrue("column1 >= 'abc'", "abc");
		isTrue("column1 >= 'abc'", "abd");
	}
}