@Test
public void togglingUnlitLightTurnsOn1Light() {
int x = getRandomCoordinate();
int y = getRandomCoordinate();
grid.toggle(x, y);
assertEquals(1, grid.getNumberOfLitLights());
}
@Test
public void togglingLitLightTurnsOff1Light() {
turnOnAllLights();
int x = getRandomCoordinate();
int y = getRandomCoordinate();
grid.toggle(x, y);
assertEquals(ROWS * COLUMNS - 1, grid.getNumberOfLitLights());
}
@Test
public void turningOnLitLightDoesNothing() {
int x = getRandomCoordinate();
int y = getRandomCoordinate();
grid.turnOn(x, y);
grid.turnOn(x, y);
assertEquals(1, grid.getNumberOfLitLights());
}
@Test
public void turningOffUnlitLightDoesNothing() {
turnOnAllLights();
int x = getRandomCoordinate();
int y = getRandomCoordinate();
grid.turnOff(x, y);
grid.turnOff(x, y);
assertEquals(ROWS * COLUMNS - 1, grid.getNumberOfLitLights());
}
private void turnOnAllLights() {
grid.changeLights(Command.TURN_ON, new Point(0, 0), new Point(ROWS - 1, COLUMNS - 1));
}
@Test
public void gridBeginsWithAllLightsOff() {
assertEquals(0, grid.getNumberOfLitLights());
}
