RobotSimulator/src/test/java/au/com/seek/domain/RobotTest.java

package au.com.seek.domain;

import org.junit.Test;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.junit.Assert.assertThat;


public class RobotTest {

    @Test
    public void should_report_robot_location() throws Exception {
        Coordinate coordinate = new Coordinate(0, 0);
        Robot robot = new Robot(coordinate, Direction.EAST);

        String report = robot.report();
        assertThat(report, equalTo("0,0,EAST"));
    }

    @Test
    public void should_report_robot_location_when_x_and_y_axis_is_not_zero() throws Exception {
        Coordinate coordinate = new Coordinate(3, 5);
        Robot robot = new Robot(coordinate, Direction.SOUTH);

        String report = robot.report();
        assertThat(report, equalTo("3,5,SOUTH"));
    }

    @Test
    public void should_change_direction_when_do_turn_left() throws Exception {
        Coordinate coordinate = new Coordinate(3, 3);
        Robot robot = new Robot(coordinate, Direction.NORTH);

        robot.turnLeft();
        assertThat(robot.report(), equalTo("3,3,WEST"));
    }

    @Test
    public void should_change_direction_when_do_turn_right() throws Exception {
        Coordinate coordinate = new Coordinate(0, 1);
        Robot robot = new Robot(coordinate, Direction.NORTH);

        robot.turnRight();
        assertThat(robot.report(), equalTo("0,1,EAST"));
    }

    @Test
    public void should_change_coordinates_when_do_move_and_facing_north() throws Exception {
        Coordinate coordinate = new Coordinate(0, 1);
        Robot robot = new Robot(coordinate, Direction.NORTH);

        robot.moveForward();
        assertThat(robot.report(), equalTo("0,2,NORTH"));
    }

    @Test
    public void should_change_coordinates_when_do_move_and_facing_east() throws Exception {
        Coordinate coordinate = new Coordinate(0, 1);
        Robot robot = new Robot(coordinate, Direction.EAST);

        robot.moveForward();
        assertThat(robot.report(), equalTo("1,1,EAST"));
    }

    @Test
    public void should_remain_same_coordinates_if_robot_is_going_to_falling_in_x_axis() throws Exception {
        Coordinate coordinate = new Coordinate(5, 0);
        Robot robot = new Robot(coordinate, Direction.EAST);

        robot.moveForward();
        assertThat(robot.report(), equalTo("5,0,EAST"));
    }

    @Test
    public void should_remain_same_coordinates_if_robot_is_going_to_falling_in_y_axis() throws Exception {
        Coordinate coordinate = new Coordinate(0, 5);
        Robot robot = new Robot(coordinate, Direction.NORTH);

        robot.moveForward();
        assertThat(robot.report(), equalTo("0,5,NORTH"));
    }

}