The makefile contains 2 test methods. The first includes the test case included in the project instructions. It tests if a certian arrangement produces a spaceship and blinkers. There is an additional method that implements this arrangement at a different position. The second method generates a glider gun. This test ensures the program behaves consistently for 100 generations.
To execute these methods, use make <test name> to execute one of the test methods. You will need to compile the executable before running these any test.
For more information about blinkers, spaceships and glider guns: Conway's Game of Life