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 * Copyright 2017, TeamDev Ltd. All rights reserved.
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package org.spine3.examples.todolist.c.aggregates;

import com.google.protobuf.Message;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.spine3.base.CommandContext;
import org.spine3.examples.todolist.TaskDefinition;
import org.spine3.examples.todolist.TaskId;
import org.spine3.examples.todolist.c.commands.AssignLabelToTask;
import org.spine3.examples.todolist.c.commands.CreateBasicTask;
import org.spine3.examples.todolist.c.commands.DeleteTask;
import org.spine3.examples.todolist.c.commands.RestoreDeletedTask;
import org.spine3.examples.todolist.c.events.LabelledTaskRestored;

import java.util.List;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.spine3.base.Identifiers.newUuid;
import static org.spine3.examples.todolist.testdata.TestCommandContextFactory.createCommandContext;
import static org.spine3.examples.todolist.testdata.TestTaskCommandFactory.LABEL_ID;
import static org.spine3.examples.todolist.testdata.TestTaskCommandFactory.TASK_ID;
import static org.spine3.examples.todolist.testdata.TestTaskCommandFactory.assignLabelToTaskInstance;
import static org.spine3.examples.todolist.testdata.TestTaskCommandFactory.createTaskInstance;
import static org.spine3.examples.todolist.testdata.TestTaskCommandFactory.deleteTaskInstance;
import static org.spine3.examples.todolist.testdata.TestTaskCommandFactory.restoreDeletedTaskInstance;

/**
 * @author Illia Shepilov
 */
public class RestoreDeletedTaskTest {

    private static final CommandContext COMMAND_CONTEXT = createCommandContext();
    private LabelledTaskPart labelledTaskPart;
    private TaskDefinitionPart taskDefinitionPart;

    private static final TaskId ID = TaskId.newBuilder()
                                           .setValue(newUuid())
                                           .build();

    @BeforeEach
    public void setUp() {
        labelledTaskPart = new LabelledTaskPart(ID);
        taskDefinitionPart = new TaskDefinitionPart(ID);
    }

    @Test
    public void emit_labelled_task_restored_event_upon_restore_task_command_when_task_has_label() {
        final CreateBasicTask createTaskCmd = createTaskInstance();
        taskDefinitionPart.dispatchForTest(createTaskCmd, COMMAND_CONTEXT);

        final AssignLabelToTask assignLabelToTaskCmd = assignLabelToTaskInstance();
        labelledTaskPart.dispatchForTest(assignLabelToTaskCmd, COMMAND_CONTEXT);

        final DeleteTask deleteTaskCmd = deleteTaskInstance();
        taskDefinitionPart.dispatchForTest(deleteTaskCmd, COMMAND_CONTEXT);

        final RestoreDeletedTask restoreDeletedTaskCmd = restoreDeletedTaskInstance();
        final List<? extends Message> messageList =
                labelledTaskPart.dispatchForTest(restoreDeletedTaskCmd, COMMAND_CONTEXT);

        final int expectedListSize = 2;
        assertEquals(expectedListSize, messageList.size());

        final LabelledTaskRestored labelledTaskRestored = (LabelledTaskRestored) messageList.get(1);
        assertEquals(TASK_ID, labelledTaskRestored.getTaskId());
        assertEquals(LABEL_ID, labelledTaskRestored.getLabelId());
    }
}

Create test class for the restore command.