/*
* 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.pig.test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.util.Random;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.POStatus;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.Result;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.BinaryExpressionOperator;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.ConstantExpression;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POAnd;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.PONot;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POOr;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.UnaryExpressionOperator;
import org.apache.pig.data.DataType;
import org.apache.pig.impl.plan.OperatorKey;
import org.junit.Before;
import org.junit.Test;
public class TestBoolean {
Random r = new Random(42L);
ConstantExpression lt, rt;
BinaryExpressionOperator bop;
UnaryExpressionOperator uop;
@Before
public void setUp() throws Exception {
lt = new ConstantExpression(new OperatorKey("", r.nextLong()));
lt.setResultType(DataType.BOOLEAN);
rt = new ConstantExpression(new OperatorKey("", r.nextLong()));
rt.setResultType(DataType.BOOLEAN);
}
private void setupAnd() {
bop = new POAnd(new OperatorKey("", r.nextLong()));
bop.setLhs(lt);
bop.setRhs(rt);
}
private void setupOr() {
bop = new POOr(new OperatorKey("", r.nextLong()));
bop.setLhs(lt);
bop.setRhs(rt);
}
private void setupNot() {
uop = new PONot(new OperatorKey("", r.nextLong()));
uop.setExpr(lt);
}
@Test
public void testAndNull() throws ExecException {
setupAnd();
Boolean[] testWith = new Boolean[] { false, true, null };
// truth table for AND
// t = true, n = null, f = false
// AND t n f
// t t n f
// n n n f
// f f f f
// test with first operand set to null
for (int i = 0; i < testWith.length; i++) {
lt.setValue(null);
rt.setValue(testWith[i]);
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
if (testWith[i] != null && testWith[i] == false) {
// if rhs is false, result is false
assertFalse((Boolean) res.result);
} else {
// else result is null
assertNull(res.result);
}
}
// test with second operand set to null
for (int i = 0; i < testWith.length; i++) {
lt.setValue(testWith[i]);
rt.setValue(null);
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
if (testWith[i] != null && testWith[i] == false) {
// if lhs is false, result is false
assertFalse((Boolean) res.result);
} else {
// else result is null
assertNull(res.result);
}
}
}
@Test
public void testOrNull() throws ExecException {
setupOr();
Boolean[] testWith = new Boolean[] { false, true, null };
// truth table for OR
// t = true, n = null, f = false
// OR t n f
// t t t t
// n t n n
// f t n f
// test with first operand set to null
for (int i = 0; i < testWith.length; i++) {
lt.setValue(null);
rt.setValue(testWith[i]);
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
if (testWith[i] != null && testWith[i] == true) {
// if rhs is true, result is true
assertTrue((Boolean) res.result);
} else {
// else result is null
assertNull(res.result);
}
}
// test with second operand set to null
for (int i = 0; i < testWith.length; i++) {
lt.setValue(testWith[i]);
rt.setValue(null);
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
if (testWith[i] != null && testWith[i] == true) {
// if lhs is true, result is true
assertTrue((Boolean) res.result);
} else {
// else result is null
assertNull(res.result);
}
}
}
@Test
public void testAndFirstFalse() throws ExecException {
setupAnd();
lt.setValue(new Boolean(false));
rt.setValue(new Boolean(true));
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertFalse((Boolean) res.result);
}
@Test
public void testAndSecondFalse() throws ExecException {
setupAnd();
lt.setValue(new Boolean(true));
rt.setValue(new Boolean(false));
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertFalse((Boolean) res.result);
}
@Test
public void testAndBothFalse() throws ExecException {
setupAnd();
lt.setValue(new Boolean(false));
rt.setValue(new Boolean(false));
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertFalse((Boolean) res.result);
}
@Test
public void testAndTrue() throws ExecException {
setupAnd();
lt.setValue(new Boolean(true));
rt.setValue(new Boolean(true));
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertTrue((Boolean) res.result);
}
@Test
public void testOrFirstFalse() throws ExecException {
setupOr();
lt.setValue(new Boolean(false));
rt.setValue(new Boolean(true));
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertTrue((Boolean) res.result);
}
@Test
public void testOrSecondFalse() throws ExecException {
setupOr();
lt.setValue(new Boolean(true));
rt.setValue(new Boolean(false));
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertTrue((Boolean) res.result);
}
@Test
public void testOrBothFalse() throws ExecException {
setupOr();
lt.setValue(new Boolean(false));
rt.setValue(new Boolean(false));
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertFalse((Boolean) res.result);
}
@Test
public void testOrTrue() throws ExecException {
setupOr();
lt.setValue(new Boolean(true));
rt.setValue(new Boolean(true));
Result res = bop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertTrue((Boolean) res.result);
}
@Test
public void testNotTrue() throws ExecException {
setupNot();
lt.setValue(new Boolean(true));
Result res = uop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertFalse((Boolean) res.result);
}
@Test
public void testNotFalse() throws ExecException {
setupNot();
lt.setValue(new Boolean(false));
Result res = uop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertTrue((Boolean) res.result);
}
@Test
public void testNotNull() throws ExecException {
setupNot();
lt.setValue(null);
Result res = uop.getNextBoolean();
assertEquals(POStatus.STATUS_OK, res.returnStatus);
assertNull(res.result);
}
}