AddNodeCommandTest.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.graph.command.impl;

import java.util.List;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.kie.workbench.common.stunner.core.command.CommandResult;
import org.kie.workbench.common.stunner.core.graph.Edge;
import org.kie.workbench.common.stunner.core.graph.Node;
import org.kie.workbench.common.stunner.core.rule.RuleEvaluationContext;
import org.kie.workbench.common.stunner.core.rule.RuleSet;
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.ElementCardinalityContext;
import org.kie.workbench.common.stunner.core.rule.context.NodeContainmentContext;
import org.kie.workbench.common.stunner.core.rule.violations.ContainmentRuleViolation;
import org.kie.workbench.common.stunner.core.rule.violations.DefaultRuleViolations;
import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

import static org.junit.Assert.*;
import static org.kie.workbench.common.stunner.core.TestingGraphUtils.verifyCardinality;
import static org.kie.workbench.common.stunner.core.TestingGraphUtils.verifyContainment;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.*;

@RunWith(MockitoJUnitRunner.class)
public class AddNodeCommandTest extends AbstractGraphCommandTest {

    private static final String UUID = "nodeUUID";

    @Mock
    Node node;

    private AddNodeCommand tested;

    @Before
    public void setup() throws Exception {
        super.init(500,
                   500);
        when(node.getUUID()).thenReturn(UUID);
        when(graph.getNode(eq(UUID))).thenReturn(node);
        when(graphIndex.getNode(eq(UUID))).thenReturn(node);
        this.tested = new AddNodeCommand(node);
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testAllow() {
        final CommandResult<RuleViolation> result = tested.allow(graphCommandExecutionContext);
        assertEquals(CommandResult.Type.INFO,
                     result.getType());
        final ArgumentCaptor<RuleEvaluationContext> contextCaptor = ArgumentCaptor.forClass(RuleEvaluationContext.class);
        verify(ruleManager,
               times(2)).evaluate(eq(ruleSet),
                                  contextCaptor.capture());
        final List<RuleEvaluationContext> contexts = contextCaptor.getAllValues();
        assertEquals(2,
                     contexts.size());
        verifyCardinality((ElementCardinalityContext) contexts.get(0),
                          graph,
                          node,
                          CardinalityContext.Operation.ADD);
        verifyContainment((NodeContainmentContext) contexts.get(1),
                          graph,
                          node);
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testNotAllowed() {
        final RuleViolations FAILED_VIOLATIONS = new DefaultRuleViolations()
                .addViolation(new ContainmentRuleViolation(graph.getUUID(),
                                                           UUID));
        when(ruleManager.evaluate(any(RuleSet.class),
                                  any(RuleEvaluationContext.class))).thenReturn(FAILED_VIOLATIONS);
        CommandResult<RuleViolation> result = tested.allow(graphCommandExecutionContext);
        assertEquals(CommandResult.Type.ERROR,
                     result.getType());
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testExecute() {
        CommandResult<RuleViolation> result = tested.execute(graphCommandExecutionContext);
        assertEquals(CommandResult.Type.INFO,
                     result.getType());
        verify(graph,
               times(1)).addNode(eq(node));
        verify(graphIndex,
               times(1)).addNode(eq(node));
        verify(graphIndex,
               times(0)).addEdge(any(Edge.class));
        verify(graph,
               times(0)).removeNode(eq(UUID));
        verify(graphIndex,
               times(0)).removeNode(eq(node));
        verify(graphIndex,
               times(0)).removeEdge(any(Edge.class));
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testExecuteCheckFailed() {
        final RuleViolations FAILED_VIOLATIONS = new DefaultRuleViolations()
                .addViolation(new ContainmentRuleViolation(graph.getUUID(),
                                                           UUID));
        when(ruleManager.evaluate(any(RuleSet.class),
                                  any(RuleEvaluationContext.class))).thenReturn(FAILED_VIOLATIONS);
        CommandResult<RuleViolation> result = tested.execute(graphCommandExecutionContext);
        assertEquals(CommandResult.Type.ERROR,
                     result.getType());
        verify(graph,
               times(0)).addNode(eq(node));
        verify(graphIndex,
               times(0)).addNode(eq(node));
        verify(graphIndex,
               times(0)).addEdge(any(Edge.class));
        verify(graph,
               times(0)).removeNode(eq(UUID));
        verify(graphIndex,
               times(0)).removeNode(eq(node));
        verify(graphIndex,
               times(0)).removeEdge(any(Edge.class));
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testUndo() {
        CommandResult<RuleViolation> result = tested.undo(graphCommandExecutionContext);
        assertEquals(CommandResult.Type.INFO,
                     result.getType());
        verify(graph,
               times(1)).removeNode(eq(UUID));
        verify(graphIndex,
               times(1)).removeNode(eq(node));
        verify(graphIndex,
               times(0)).removeEdge(any(Edge.class));
        verify(graph,
               times(0)).addNode(eq(node));
        verify(graphIndex,
               times(0)).addNode(eq(node));
        verify(graphIndex,
               times(0)).addEdge(any(Edge.class));
    }
}