tester.actionMousePress(planComponent,
new ComponentLocation(new Point(30, 30)));
tester.actionMouseMove(planComponent,
new ComponentLocation(new Point(50, 50)));
tester.actionKeyPress(KeyEvent.VK_SHIFT);
tester.waitForIdle();
tester.actionMouseRelease();
tester.actionKeyRelease(KeyEvent.VK_SHIFT);
// Check wall start point moved to (60, 60)
assertCoordinatesEqualWallPoints(60, 60, 504, 20, wall1);
assertCoordinatesEqualWallPoints(60, 60, 24, 300, wall4);