AddChildNodeCommandTest.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.Command;
import org.kie.workbench.common.stunner.core.command.CommandResult;
import org.kie.workbench.common.stunner.core.graph.Node;
import org.kie.workbench.common.stunner.core.graph.command.GraphCommandExecutionContext;
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.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.eq;
import static org.mockito.Mockito.*;

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

    private static final String PARENT_UUID = "parentUUID";
    private static final String CANDIDATE_UUID = "candidateUUID";
    private static final Double x = 100d;
    private static final Double y = 200d;

    private Node parent;
    private Node candidate;

    private AddChildNodeCommand tested;

    @Before
    public void setup() throws Exception {
        super.init(500,
                   500);
        this.parent = mockNode(PARENT_UUID);
        this.candidate = mockNode(CANDIDATE_UUID);
        when(graphIndex.getNode(eq(PARENT_UUID))).thenReturn(parent);
        this.tested = new AddChildNodeCommand(PARENT_UUID,
                                              candidate,
                                              x,
                                              y);
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testInitializeCommands() {
        this.tested = spy(tested);
        tested.initialize(graphCommandExecutionContext);
        ArgumentCaptor<Command> commandArgumentCaptor = ArgumentCaptor.forClass(Command.class);
        verify(tested,
               times(3)).addCommand(commandArgumentCaptor.capture());
        List<Command> commands = commandArgumentCaptor.getAllValues();
        assertNotNull(commands);
        assertTrue(commands.size() == 3);
        assertTrue(commands.get(0) instanceof RegisterNodeCommand);
        assertTrue(commands.get(1) instanceof SetChildNodeCommand);
        assertTrue(commands.get(2) instanceof UpdateElementPositionCommand);
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testInitializeWithNoPositionCommands() {
        this.tested = spy(new AddChildNodeCommand(PARENT_UUID,
                                                  candidate,
                                                  null,
                                                  null));
        tested.initialize(graphCommandExecutionContext);
        ArgumentCaptor<Command> commandArgumentCaptor = ArgumentCaptor.forClass(Command.class);
        verify(tested,
               times(2)).addCommand(commandArgumentCaptor.capture());
        List<Command> commands = commandArgumentCaptor.getAllValues();
        assertNotNull(commands);
        assertTrue(commands.size() == 2);
        assertTrue(commands.get(0) instanceof RegisterNodeCommand);
        assertTrue(commands.get(1) instanceof SetChildNodeCommand);
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testAllow() {
        CommandResult<RuleViolation> result = tested.allow(graphCommandExecutionContext);
        assertEquals(CommandResult.Type.INFO,
                     result.getType());
        List<Command<GraphCommandExecutionContext, RuleViolation>> commands = tested.getCommands();
        assertNotNull(commands);
        assertEquals(3,
                     commands.size());
        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(1),
                          graph,
                          candidate,
                          CardinalityContext.Operation.ADD);
        verifyContainment((NodeContainmentContext) contexts.get(0),
                          parent,
                          candidate);
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testAllowNoRules() {
        when(graphCommandExecutionContext.getRuleManager()).thenReturn(null);
        CommandResult<RuleViolation> result = tested.allow(graphCommandExecutionContext);
        assertEquals(CommandResult.Type.INFO,
                     result.getType());
        verify(ruleManager,
               times(0)).evaluate(eq(ruleSet),
                                  any(RuleEvaluationContext.class));
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testNotAllowed() {
        final RuleViolations FAILED_VIOLATIONS = new DefaultRuleViolations()
                .addViolation(new ContainmentRuleViolation(graph.getUUID(),
                                                           PARENT_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());
    }
}