tkobayas commented on code in PR #7223: URL: https://github.com/apache/incubator-kie/pull/7223#discussion_r4357728557
########## drools-test-coverage/test-compiler-integration/src/test/java/org/drools/mvel/integrationtests/sequential/SequentialInsertDeleteUpdateTest.java: ########## @@ -0,0 +1,1055 @@ +/* + * 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.drools.mvel.integrationtests.sequential; + +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.stream.Stream; + +import org.drools.mvel.compiler.Cheese; +import org.drools.mvel.compiler.Person; +import org.drools.testcoverage.common.util.KieBaseTestConfiguration; +import org.drools.testcoverage.common.util.KieBaseUtil; +import org.drools.testcoverage.common.util.KieUtil; +import org.drools.testcoverage.common.util.TestParametersUtil2; +import org.junit.jupiter.api.Disabled; +import org.junit.jupiter.params.ParameterizedTest; +import org.junit.jupiter.params.provider.MethodSource; +import org.kie.api.KieBase; +import org.kie.api.builder.KieModule; +import org.kie.api.conf.SequentialOption; +import org.kie.api.runtime.StatelessKieSession; +import org.kie.internal.command.CommandFactory; + +import static org.assertj.core.api.Assertions.assertThat; + +/** + * Tests how insert, delete and update in the RHS work in sequential mode. + * <p> + * In sequential mode, rules are evaluated one by one in salience and load order, and each rule is evaluated only once. + * A rule which has not been evaluated yet sees the working memory changes made by previously fired rules. + * A rule which has already been evaluated is not re-evaluated. + * + * @see <a href="https://github.com/apache/incubator-kie/issues/7221";>incubator-kie#7221</a> + */ +public class SequentialInsertDeleteUpdateTest { + + public static Stream<KieBaseTestConfiguration> parameters() { + return TestParametersUtil2.getKieBaseCloudConfigurations(true).stream(); + } + + // ===================================================================== + // insert tests + // ===================================================================== + + /** + * R2 has not been evaluated yet, so it matches the Cheese inserted by R1. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertMatchedByLaterRule(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"stilton\", 10 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R2:\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1", "R2:stilton"); + } + + /** + * R1 has already been evaluated when R2 inserts a Cheese, so R1 is not re-evaluated. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertNotMatchedByEarlierRule(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R1:\" + $c.getType() );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"stilton\", 10 ) );\n" + + " list.add( \"R2\" );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R2"); + } + + /** + * R1 inserts a Person which matches R1 itself. R1 is not re-evaluated, so it doesn't loop even without no-loop. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertNotMatchedBySameRule(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Person( $p.getName() + \"_child\", \"stilton\", 0 ) );\n" + + " list.add( \"R1:\" + $p.getName() );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + "then\n" + + " list.add( \"R2:\" + $p.getName() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactlyInAnyOrder("R1:p1", "R2:p1", "R2:p1_child"); + assertThat(list.get(0)).isEqualTo("R1:p1"); + } + + /** + * Inserting an object which is already in the working memory. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + @Disabled("Behaves differently from non-sequential mode. See https://github.com/apache/incubator-kie/issues/7222";) + public void testInsertSameObjectAgain(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese()\n" + + "then\n" + + " insert( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R2:\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Cheese("stilton", 10)); + assertThat(list).containsExactly("R1", "R2:stilton"); + } + + /** + * JoinNode - right insert: R1 inserts a Cheese which joins with the existing Person in R2. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertJoinRight(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( $p.getLikes(), 10 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " $c : Cheese( type == $p.likes )\n" + + "then\n" + + " list.add( \"R2:\" + $p.getName() + \":\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1", "R2:p1:stilton"); + } + + /** + * JoinNode - left insert: R1 inserts a Person which joins with the existing Cheese in R2. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertJoinLeft(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese()\n" + + "then\n" + + " insert( new Person( \"p1\", $c.getType(), 0 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " $c : Cheese( type == $p.likes )\n" + + "then\n" + + " list.add( \"R2:\" + $p.getName() + \":\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Cheese("stilton", 10)); + assertThat(list).containsExactly("R1", "R2:p1:stilton"); + } + + /** + * NotNode - right insert: R1 inserts a cheddar Cheese, which blocks R2's "not Cheese( type == 'cheddar' )". + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertWithNot(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"cheddar\", 10 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " not Cheese( type == \"cheddar\" )\n" + + "then\n" + + " list.add( \"R2\" );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1"); + } + + /** + * ExistsNode - right insert: R1 inserts a stilton Cheese, which satisfies R2's "exists Cheese( type == 'stilton' )". + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertWithExists(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"stilton\", 10 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " exists Cheese( type == \"stilton\" )\n" + + "then\n" + + " list.add( \"R2\" );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1", "R2"); + } + + /** + * AccumulateNode - right insert: R1 inserts a Cheese, which is included in R2's accumulate. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertWithAccumulate(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"stilton\", 20 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " $total : Number() from accumulate(\n" + + " Cheese( type == $p.likes, $price : price ),\n" + + " sum( $price )\n" + + " )\n" + + "then\n" + + " list.add( \"R2:\" + $total.intValue() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0), new Cheese("stilton", 10)); + assertThat(list).containsExactly("R1", "R2:30"); + } + + // ===================================================================== + // delete tests + // ===================================================================== + + /** + * R2 has not been evaluated yet, so it doesn't match the Cheese deleted by R1. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testDeleteNotMatchedByLaterRule(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese( type == \"stilton\" )\n" + + "then\n" + + " delete( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R2:\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Cheese("stilton", 10), new Cheese("cheddar", 10)); + assertThat(list).containsExactly("R1", "R2:cheddar"); + } + + /** + * R1 has already fired for the Cheese when R2 deletes it. The deletion doesn't affect R1. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testDeleteAfterEarlierRuleFired(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R1:\" + $c.getType() );\n" + + "end\n" + + "rule R2 salience 50 when\n" + + " $c : Cheese()\n" + + "then\n" + + " delete( $c );\n" + + " list.add( \"R2:\" + $c.getType() );\n" + + "end\n" + + "rule R3 when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R3:\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Cheese("stilton", 10)); + assertThat(list).containsExactly("R1:stilton", "R2:stilton"); + } + + /** + * A single-use Coupon is deleted when it is applied. R1 has 2 matches (one per Order) with the same Coupon. + * The first firing deletes the Coupon, so the other match is cancelled as it is in non-sequential mode. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + @Disabled("Behaves differently from non-sequential mode. See https://github.com/apache/incubator-kie/issues/7222";) + public void testDeleteFactOfPendingMatchOfSameRule(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Order.class.getCanonicalName() + "\n" + + "import " + Coupon.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 when\n" + + " $o : Order( discounted == false )\n" + + " $c : Coupon()\n" + + "then\n" + + " modify( $o ) { setTotal( $o.getTotal() - $c.getDiscount() ), setDiscounted( true ) };\n" + + " delete( $c );\n" + + " list.add( \"R1:\" + $o.getId() + \":\" + $c.getCode() );\n" + + "end\n"; + + Order o1 = new Order("o1", 100); + Order o2 = new Order("o2", 100); + List<String> list = executeSequential(str, kieBaseTestConfiguration, o1, o2, new Coupon("A", 10)); + assertThat(list).hasSize(1); + assertThat(Stream.of(o1, o2).filter(Order::isDiscounted)).hasSize(1); + } + + /** + * JoinNode - right delete: R1 deletes the Cheese which is part of R2's match. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testDeleteJoinRight(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese( type == \"stilton\" )\n" + + "then\n" + + " delete( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " $c : Cheese( type == $p.likes )\n" + + "then\n" + + " list.add( \"R2:\" + $p.getName() + \":\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, + new Person("p1", "stilton", 0), new Person("p2", "cheddar", 0), + new Cheese("stilton", 10), new Cheese("cheddar", 10)); + assertThat(list).containsExactly("R1", "R2:p2:cheddar"); + } + + /** + * JoinNode - left delete: R1 deletes the Person which is part of R2's match. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testDeleteJoinLeft(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person( name == \"p1\" )\n" + + "then\n" + + " delete( $p );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " $c : Cheese( type == $p.likes )\n" + + "then\n" + + " list.add( \"R2:\" + $p.getName() + \":\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, + new Person("p1", "stilton", 0), new Person("p2", "cheddar", 0), + new Cheese("stilton", 10), new Cheese("cheddar", 10)); + assertThat(list).containsExactly("R1", "R2:p2:cheddar"); + } + + /** + * NotNode - right delete: R1 deletes the cheddar Cheese, which unblocks R2's "not Cheese( type == 'cheddar' )". + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testDeleteWithNot(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese( type == \"cheddar\" )\n" + + "then\n" + + " delete( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " not Cheese( type == \"cheddar\" )\n" + + "then\n" + + " list.add( \"R2\" );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0), new Cheese("cheddar", 10)); + assertThat(list).containsExactly("R1", "R2"); + } + + /** + * ExistsNode - right delete: R1 deletes the only stilton Cheese, so R2's "exists Cheese( type == 'stilton' )" fails. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testDeleteWithExists(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese( type == \"stilton\" )\n" + + "then\n" + + " delete( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " exists Cheese( type == \"stilton\" )\n" + + "then\n" + + " list.add( \"R2\" );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0), new Cheese("stilton", 10)); + assertThat(list).containsExactly("R1"); + } + + /** + * AccumulateNode - right delete: R1 deletes a Cheese, which is excluded from R2's accumulate. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testDeleteWithAccumulate(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese( price == 20 )\n" + + "then\n" + + " delete( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " $total : Number() from accumulate(\n" + + " Cheese( type == $p.likes, $price : price ),\n" + + " sum( $price )\n" + + " )\n" + + "then\n" + + " list.add( \"R2:\" + $total.intValue() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, + new Person("p1", "stilton", 0), new Cheese("stilton", 10), new Cheese("stilton", 20)); + assertThat(list).containsExactly("R1", "R2:10"); + } + + /** + * R1 inserts a Cheese and R2 deletes it. R3 doesn't match the Cheese. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testDeleteInsertedFact(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"stilton\", 10 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 salience 50 when\n" + + " $c : Cheese()\n" + + "then\n" + + " delete( $c );\n" + + " list.add( \"R2:\" + $c.getType() );\n" + + "end\n" + + "rule R3 when\n" + + " $p : Person()\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R3:\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1", "R2:stilton"); + } + + // ===================================================================== + // update tests + // ===================================================================== + + /** + * R1 changes the age with a setter and calls update(). R2 matches the new value and R3 doesn't match the old value. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testUpdateMatchedByLaterRule(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person( age == 0 )\n" + + "then\n" + + " $p.setAge( 1 );\n" + + " update( $p );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 salience 50 when\n" + + " $p : Person( age == 1 )\n" + + "then\n" + + " list.add( \"R2\" );\n" + + "end\n" + + "rule R3 when\n" + + " $p : Person( age == 0 )\n" + + "then\n" + + " list.add( \"R3\" );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1", "R2"); + } + + /** + * R1 has already been evaluated when R2 updates the Person, so R1 is not re-evaluated. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testUpdateNotMatchedByEarlierRule(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person( age == 1 )\n" + + "then\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person( age == 0 )\n" + + "then\n" + + " $p.setAge( 1 );\n" + + " update( $p );\n" + + " list.add( \"R2\" );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R2"); + } + + /** + * R1 updates the Person, which still matches R1 itself. R1 is not re-evaluated, so it doesn't loop even without no-loop. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testUpdateNotMatchedBySameRule(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 when\n" + + " $p : Person( age >= 0 )\n" + + "then\n" + + " $p.setAge( $p.getAge() + 1 );\n" + + " update( $p );\n" + + " list.add( \"R1:\" + $p.getAge() );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + "then\n" + + " list.add( \"R2:\" + $p.getAge() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1:1", "R2:1"); + } + + /** + * Only one Coupon can be applied to an Order. R1 has 2 matches (one per Coupon) with the same Order. + * The first firing updates the Order to discounted, so the other match is cancelled as it is in non-sequential mode. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + @Disabled("Behaves differently from non-sequential mode. See https://github.com/apache/incubator-kie/issues/7222";) + public void testUpdateFactOfPendingMatchOfSameRule(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Order.class.getCanonicalName() + "\n" + + "import " + Coupon.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 when\n" + + " $o : Order( discounted == false )\n" + + " $c : Coupon()\n" + + "then\n" + + " modify( $o ) { setTotal( $o.getTotal() - $c.getDiscount() ), setDiscounted( true ) };\n" + + " list.add( \"R1:\" + $o.getId() + \":\" + $c.getCode() );\n" + + "end\n"; + + Order o1 = new Order("o1", 100); + List<String> list = executeSequential(str, kieBaseTestConfiguration, o1, new Coupon("A", 10), new Coupon("B", 20)); + assertThat(list).hasSize(1); + assertThat(o1.getTotal()).isIn(90, 80); + } + + /** + * JoinNode - right update: R1 updates the Cheese type, so R2 joins the Person with the updated Cheese. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testUpdateJoin(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese( type == \"stilton\" )\n" + + "then\n" + + " $c.setType( \"cheddar\" );\n" + + " update( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " $c : Cheese( type == $p.likes )\n" + + "then\n" + + " list.add( \"R2:\" + $p.getName() + \":\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, + new Person("p1", "stilton", 0), new Person("p2", "cheddar", 0), new Cheese("stilton", 10)); + assertThat(list).containsExactly("R1", "R2:p2:cheddar"); + } + + /** + * NotNode / ExistsNode - right update: R1 updates the Cheese from stilton to cheddar. + * R2's "not Cheese( type == 'stilton' )" is unblocked and R3's "exists Cheese( type == 'stilton' )" fails. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testUpdateWithNotAndExists(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese( type == \"stilton\" )\n" + + "then\n" + + " $c.setType( \"cheddar\" );\n" + + " update( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 salience 50 when\n" + + " $p : Person()\n" + + " not Cheese( type == \"stilton\" )\n" + + "then\n" + + " list.add( \"R2\" );\n" + + "end\n" + + "rule R3 when\n" + + " $p : Person()\n" + + " exists Cheese( type == \"stilton\" )\n" + + "then\n" + + " list.add( \"R3\" );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0), new Cheese("stilton", 10)); + assertThat(list).containsExactly("R1", "R2"); + } + + /** + * AccumulateNode - right update: R1 updates the Cheese price, so R2's accumulate uses the updated price. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testUpdateWithAccumulate(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $c : Cheese( price == 20 )\n" + + "then\n" + + " $c.setPrice( 50 );\n" + + " update( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 when\n" + + " $p : Person()\n" + + " $total : Number() from accumulate(\n" + + " Cheese( type == $p.likes, $price : price ),\n" + + " sum( $price )\n" + + " )\n" + + "then\n" + + " list.add( \"R2:\" + $total.intValue() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, + new Person("p1", "stilton", 0), new Cheese("stilton", 10), new Cheese("stilton", 20)); + assertThat(list).containsExactly("R1", "R2:60"); + } + + // ===================================================================== + // insert / delete / update combined tests + // ===================================================================== + + /** + * R1 inserts, R2 updates and R3 deletes. Each rule sees the changes made by the previously fired rules. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertUpdateDeleteChain(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 salience 100 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"stilton\", 10 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 salience 90 when\n" + + " $c : Cheese( price == 10 )\n" + + "then\n" + + " modify( $c ) { setPrice( 20 ) };\n" + + " list.add( \"R2\" );\n" + + "end\n" + + "rule R3 salience 80 when\n" + + " $p : Person()\n" + + " $c : Cheese( type == $p.likes, price == 20 )\n" + + "then\n" + + " list.add( \"R3:\" + $c.getPrice() );\n" + + "end\n" + + "rule R4 salience 70 when\n" + + " $c : Cheese()\n" + + "then\n" + + " delete( $c );\n" + + " list.add( \"R4\" );\n" + + "end\n" + + "rule R5 salience 60 when\n" + + " $p : Person()\n" + + " not Cheese()\n" + + "then\n" + + " list.add( \"R5\" );\n" + + "end\n" + + "rule R6 when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R6\" );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1", "R2", "R3:20", "R4", "R5"); + } + + /** + * Without salience, rules are evaluated in load order. R2 sees the Cheese inserted by R1, + * but R1 doesn't see the Person inserted by R2. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertWithLoadOrder(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R1 when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"stilton\", 10 ) );\n" + + " list.add( \"R1:\" + $p.getName() );\n" + + "end\n" + + "rule R2 when\n" + + " $c : Cheese()\n" + + "then\n" + + " insert( new Person( \"p2\", \"stilton\", 0 ) );\n" + + " list.add( \"R2:\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1:p1", "R2:stilton"); + } + + // ===================================================================== + // ruleflow-group tests + // ===================================================================== + + /** + * g1 has the focus first. A rule in g1 inserts a Cheese, which is matched by a rule in g2 evaluated later. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertMatchedByLaterAgendaGroup(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R0 when\n" + + "then\n" + + " drools.getKnowledgeRuntime().getAgenda().getAgendaGroup( \"g2\" ).setFocus();\n" + + " drools.getKnowledgeRuntime().getAgenda().getAgendaGroup( \"g1\" ).setFocus();\n" + + "end\n" + + "rule R1 ruleflow-group \"g1\" when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"stilton\", 10 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 ruleflow-group \"g2\" when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R2:\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1", "R2:stilton"); + } + + /** + * g2 has the focus first. A rule in g1 inserts a Cheese, but g2 has already been visited, so the rule in g2 is not re-evaluated. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testInsertNotMatchedByVisitedAgendaGroup(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Person.class.getCanonicalName() + "\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R0 when\n" + + "then\n" + + " drools.getKnowledgeRuntime().getAgenda().getAgendaGroup( \"g1\" ).setFocus();\n" + + " drools.getKnowledgeRuntime().getAgenda().getAgendaGroup( \"g2\" ).setFocus();\n" + + "end\n" + + "rule R1 ruleflow-group \"g1\" when\n" + + " $p : Person()\n" + + "then\n" + + " insert( new Cheese( \"stilton\", 10 ) );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 ruleflow-group \"g2\" when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R2:\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Person("p1", "stilton", 0)); + assertThat(list).containsExactly("R1"); + } + + /** + * g1 has the focus first. A rule in g1 deletes a Cheese, so a rule in g2 evaluated later doesn't match it. + */ + @ParameterizedTest(name = "KieBase type={0}") + @MethodSource("parameters") + public void testDeleteNotMatchedByLaterAgendaGroup(KieBaseTestConfiguration kieBaseTestConfiguration) { + String str = + "package org.drools.mvel.compiler.test\n" + + "import " + Cheese.class.getCanonicalName() + "\n" + + "global " + List.class.getCanonicalName() + " list\n" + + "rule R0 when\n" + + "then\n" + + " drools.getKnowledgeRuntime().getAgenda().getAgendaGroup( \"g2\" ).setFocus();\n" + + " drools.getKnowledgeRuntime().getAgenda().getAgendaGroup( \"g1\" ).setFocus();\n" + + "end\n" + + "rule R1 ruleflow-group \"g1\" when\n" + + " $c : Cheese( type == \"stilton\" )\n" + + "then\n" + + " delete( $c );\n" + + " list.add( \"R1\" );\n" + + "end\n" + + "rule R2 ruleflow-group \"g2\" when\n" + + " $c : Cheese()\n" + + "then\n" + + " list.add( \"R2:\" + $c.getType() );\n" + + "end\n"; + + List<String> list = executeSequential(str, kieBaseTestConfiguration, new Cheese("stilton", 10), new Cheese("cheddar", 10)); + assertThat(list).containsExactly("R1", "R2:cheddar"); + } + + // ===================================================================== + // Helper methods + // ===================================================================== + + private List<String> executeSequential(String drl, KieBaseTestConfiguration kieBaseTestConfiguration, Object... facts) { + final KieModule kieModule = KieUtil.getKieModuleFromDrls("test", kieBaseTestConfiguration, drl); Review Comment: It's a common practice in this module. 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