/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed 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;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.drools.testcoverage.common.util.KieBaseTestConfiguration;
import org.drools.testcoverage.common.util.KieBaseUtil;
import org.drools.testcoverage.common.util.TestParametersUtil;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.kie.api.KieBase;
import org.kie.api.runtime.KieSession;

import static org.assertj.core.api.Assertions.assertThat;

@RunWith(Parameterized.class)
public class DroolsFromRHSTest {

    private final KieBaseTestConfiguration kieBaseTestConfiguration;

    public DroolsFromRHSTest(final KieBaseTestConfiguration kieBaseTestConfiguration) {
        this.kieBaseTestConfiguration = kieBaseTestConfiguration;
    }

    @Parameterized.Parameters(name = "KieBase type={0}")
    public static Collection<Object[]> getParameters() {
        return TestParametersUtil.getKieBaseCloudConfigurations(true);
    }

    @Test
    public void testHalt() throws Exception {
        KieBase kbase = KieBaseUtil.getKieBaseFromClasspathResources(this.getClass(), kieBaseTestConfiguration, "test_halt.drl");
        KieSession ksession = kbase.newKieSession();

        final List results = new ArrayList();
        ksession.setGlobal( "results",
                results );

        ksession.insert(0);
        ksession.fireAllRules();

        assertThat(results.size()).isEqualTo(10);
        for ( int i = 0; i < 10; i++ ) {
            assertThat(results.get(i)).isEqualTo(i);
        }
    }

    @Test
    public void testFireLimit() throws Exception {
        KieBase kbase = KieBaseUtil.getKieBaseFromClasspathResources(this.getClass(), kieBaseTestConfiguration, "test_fireLimit.drl");
        KieSession ksession = kbase.newKieSession();

        final List results = new ArrayList();
        ksession.setGlobal("results", results);

        ksession.insert(0);
        int count = ksession.fireAllRules();
        assertThat(count).isEqualTo(21);

        assertThat(results.size()).isEqualTo(20);
        for (int i = 0; i < 20; i++) {
            assertThat(results.get(i)).isEqualTo(i);
        }
        results.clear();

        ksession.insert(0);
        count = ksession.fireAllRules(10);
        assertThat(count).isEqualTo(10);

        assertThat(results.size()).isEqualTo(10);
        for (int i = 0; i < 10; i++) {
            assertThat(results.get(i)).isEqualTo(i);
        }

        count = ksession.fireAllRules(); //should finish the rest
        assertThat(count).isEqualTo(11);
        assertThat(results.size()).isEqualTo(20);
        for (int i = 0; i < 20; i++) {
            assertThat(results.get(i)).isEqualTo(i);
        }
        results.clear();

        ksession.insert(0);
        count = ksession.fireAllRules();

        assertThat(count).isEqualTo(21);

        assertThat(results.size()).isEqualTo(20);
        for (int i = 0; i < 20; i++) {
            assertThat(results.get(i)).isEqualTo(i);
        }
        results.clear();
    }
}
