Create Unit Tests

After gathering the requirements it time to think about the Unit Test Cases. From these initial requirements there are a few nouns, that everyone should have found.

Action Plan

Create the unit test cases source directory src/test/java.
Create the package com.github.<user-id>.mrrs.domain, in the new unit test sources directory.
Replace <user-id> with your github user name.
Add first test class FacilityTest
Use the Java template test in Eclipse (from JUnit 4), to create a new test method.
There are now a lot of errors, this is because the JUnit 4 library is not yet imported.
Add the missing dependency to the pom.xml

package com.github.verhagen.mrrs.domain;

import static org.junit.Assert.*;

import org.junit.Test;

public class FacilityTest {

    @Test
    public void createComputerWithLargeScreen() throws Exception {
        Facitlity facility = new Facility("Computer with large screen");
        
        assertEquals("Computer with large screen", facility.getName());
    }


    @Test
    public void createWhiteborad() throws Exception {
        Facitlity facility = new Facility("Whiteboard");
        
        assertEquals("Whiteboard", facility.getName());
    }

}

Implement the missing class Facility, make sure it end up in the right directory, inside the project src/main/java (or move it there, if it is created under src/test/java).
Add another test class RoomTest begin with a positive test

    @Test
    public void createBasicRoom() throws Exception {
        String name = "Berlin";
        String location = "01.02";
        int capacity = 12;
        Room room = new Room(name, location, capacity);
        
        assertEquals(room.getName(), name);
        assertEquals(room.getLocation(), location);
        assertEquals(room.getCapacity(), capacity);
    }

Implement the class Room
Add some unit tests which check, that the required fields are given and / or are valid. The reuired field are: location and capacity.

    @Test(expected = IllegalArgumentException.class)
    public void createBasicRoomNoLocation() throws Exception {
        String location = null;
        int capacity = 12;
        new Room(location, capacity);
    }

    @Test(expected = IllegalArgumentException.class)
    public void createBasicRoomNegativeCapacity() throws Exception {
        String location = null;
        int capacity = -2;
        new Room(location, capacity);
    }

Improve the implementation of Room
Add an unit test, where the room has facilities.

    @Test
    public void createRoomWithFacilities() throws Exception {
        String name = "Moscow";
        String location = "02.04";
        int capacity = 10;
        Set<Facility> facilities = new TreeSet<>();
        facilities.add(new Facility("whiteboard"));
        facilities.add(new Facility("beamer"));
        Room room = new Room(name, location, capacity, facilities);
        
        assertEquals(room.getName(), name);
        assertEquals(room.getLocation(), location);
        assertEquals(room.getCapacity(), capacity);
        assertEquals(room.getFacilities(), facilities);
    }

This unit test does not run, as it fails already, before the assertEquals!!!
An extra function compareTo(Facility other) is needed, so facilities can be compared to each other. Meaning to order them. Which is needed when adding them to a set.
Create a unit test for the new functionality, of the class Facility

    @Test
    public void compare() throws Exception {
        Facility whiteboard = new Facility("whiteboard");
        Facility beamer = new Facility("beamer");
        assertTrue(whiteboard.compareTo(beamer) > 0);
        assertTrue(beamer.compareTo(whiteboard) < 0);
    }

Add the implementation for Facility
Add the implementation for Room

Written on May 8, 2016