Test-Driven Java Development, Second Edition - Second Edition

The integration test

We'll create a TicTacToeInteg class inside the com.packtpublishing.tddjava.ch03tictactoe package in the src/test/java directory. Since we know that Jongo throws an exception if it cannot connect to the database, a test class can be as simple as the following:

import org.junit.Test;
import java.net.UnknownHostException;
import static org.junit.Assert.*;

public class TicTacToeInteg {

  @Test
  public void givenMongoDbIsRunningWhenPlayThenNoException()        throws UnknownHostException {
    TicTacToe ticTacToe = new TicTacToe();
    assertEquals(TicTacToe.NO_WINNER, ticTacToe.play(1, 1));
  }
}

The invocation of assertEquals is just as a precaution. The real objective of this test is to make sure that no Exception is thrown. Since we did not ...