| /* |
| * 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); |
| } |
| } |