ConnectorCardinalityEvaluationHandlerTest.java

/*
 * 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.kie.workbench.common.stunner.core.rule.handler.impl;

import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.Set;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.kie.workbench.common.stunner.core.graph.Edge;
import org.kie.workbench.common.stunner.core.graph.content.view.ViewConnector;
import org.kie.workbench.common.stunner.core.rule.RuleViolation;
import org.kie.workbench.common.stunner.core.rule.RuleViolations;
import org.kie.workbench.common.stunner.core.rule.context.CardinalityContext;
import org.kie.workbench.common.stunner.core.rule.context.ConnectorCardinalityContext;
import org.kie.workbench.common.stunner.core.rule.context.EdgeCardinalityContext;
import org.kie.workbench.common.stunner.core.rule.impl.EdgeOccurrences;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

import static org.junit.Assert.*;
import static org.mockito.Mockito.*;

@RunWith(MockitoJUnitRunner.class)
public class ConnectorCardinalityEvaluationHandlerTest extends AbstractGraphRuleHandlerTest {

    private final static String EDGE_ID = "edgeId1";

    private final static EdgeOccurrences RULE_IN_NO_LIMIT =
            new EdgeOccurrences("c1",
                                EDGE_ID,
                                CANDIDATE_ID,
                                EdgeCardinalityContext.Direction.INCOMING,
                                0,
                                -1);

    private final static EdgeOccurrences RULE_IN_MAX_1 =
            new EdgeOccurrences("c1",
                                EDGE_ID,
                                CANDIDATE_ID,
                                EdgeCardinalityContext.Direction.INCOMING,
                                0,
                                1);

    private final static EdgeOccurrences RULE_IN_MIN_1 =
            new EdgeOccurrences("c1",
                                EDGE_ID,
                                CANDIDATE_ID,
                                EdgeCardinalityContext.Direction.INCOMING,
                                1,
                                -1);

    @Mock
    ConnectorCardinalityContext context;

    @Mock
    Edge edge;

    @Mock
    ViewConnector edgeContent;

    @Mock
    Object edgeDefinition;

    private ConnectorCardinalityEvaluationHandler tested;
    private GraphEvaluationHandlerUtils evalUtils;

    @Before
    @SuppressWarnings("unchecked")
    public void setup() throws Exception {
        super.setup();
        final Set<String> edgeLabels = Collections.singleton(EDGE_ID);
        evalUtils = spy(new GraphEvaluationHandlerUtils(definitionManager));
        when(context.getCandidate()).thenReturn(candidate);
        when(context.getEdge()).thenReturn(edge);
        when(edge.getContent()).thenReturn(edgeContent);
        when(edge.getLabels()).thenReturn(edgeLabels);
        when(edgeContent.getDefinition()).thenReturn(edgeDefinition);
        when(definitionAdapter.getId(eq(edgeDefinition))).thenReturn(EDGE_ID);
        tested = new ConnectorCardinalityEvaluationHandler(evalUtils,
                                                           new EdgeCardinalityEvaluationHandler());
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testAccepts() {
        when(context.getDirection()).thenReturn(EdgeCardinalityContext.Direction.INCOMING);
        assertTrue(tested.accepts(RULE_IN_NO_LIMIT,
                                  context));
        when(context.getDirection()).thenReturn(EdgeCardinalityContext.Direction.OUTGOING);
        assertFalse(tested.accepts(RULE_IN_NO_LIMIT,
                                   context));
        when(context.getDirection()).thenReturn(EdgeCardinalityContext.Direction.INCOMING);
        when(definitionAdapter.getId(eq(edgeDefinition))).thenReturn("anotherId");
        assertFalse(tested.accepts(RULE_IN_NO_LIMIT,
                                   context));
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testEvaluateInNoLimit() {
        when(evalUtils.countEdges(anyString(),
                                  any(List.class))).thenReturn(0);
        when(context.getDirection()).thenReturn(EdgeCardinalityContext.Direction.INCOMING);
        when(context.getOperation()).thenReturn(Optional.of(CardinalityContext.Operation.ADD));
        RuleViolations violations = tested.evaluate(RULE_IN_NO_LIMIT,
                                                    context);
        assertNotNull(violations);
        assertFalse(violations.violations(RuleViolation.Type.ERROR).iterator().hasNext());
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testEvaluateInMaxOneSucess() {
        when(evalUtils.countEdges(anyString(),
                                  any(List.class))).thenReturn(0);
        when(context.getDirection()).thenReturn(EdgeCardinalityContext.Direction.INCOMING);
        when(context.getOperation()).thenReturn(Optional.of(CardinalityContext.Operation.ADD));
        RuleViolations violations = tested.evaluate(RULE_IN_MAX_1,
                                                    context);
        assertNotNull(violations);
        assertFalse(violations.violations(RuleViolation.Type.ERROR).iterator().hasNext());
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testEvaluateInMaxOneFailed() {
        when(evalUtils.countEdges(anyString(),
                                  any(List.class))).thenReturn(1);
        when(context.getDirection()).thenReturn(EdgeCardinalityContext.Direction.INCOMING);
        when(context.getOperation()).thenReturn(Optional.of(CardinalityContext.Operation.ADD));
        RuleViolations violations = tested.evaluate(RULE_IN_MAX_1,
                                                    context);
        assertNotNull(violations);
        assertTrue(violations.violations(RuleViolation.Type.ERROR).iterator().hasNext());
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testEvaluateInMinOneSucess() {
        when(evalUtils.countEdges(anyString(),
                                  any(List.class))).thenReturn(0);
        when(context.getDirection()).thenReturn(EdgeCardinalityContext.Direction.INCOMING);
        when(context.getOperation()).thenReturn(Optional.of(CardinalityContext.Operation.ADD));
        RuleViolations violations = tested.evaluate(RULE_IN_MIN_1,
                                                    context);
        assertNotNull(violations);
        assertFalse(violations.violations(RuleViolation.Type.ERROR).iterator().hasNext());
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testEvaluateInMinOneFailed() {
        when(evalUtils.countEdges(anyString(),
                                  any(List.class))).thenReturn(1);
        when(context.getDirection()).thenReturn(EdgeCardinalityContext.Direction.INCOMING);
        when(context.getOperation()).thenReturn(Optional.of(CardinalityContext.Operation.DELETE));
        RuleViolations violations = tested.evaluate(RULE_IN_MIN_1,
                                                    context);
        assertNotNull(violations);
        assertTrue(violations.violations(RuleViolation.Type.WARNING).iterator().hasNext());
    }
}