toniBlog

A weblog about Methodologies for Development

HelloWorld v 2.0

Once upon a time we used to write: 
public static void main(String[] args) {
   System.out.println(”Hello World”);
}
Now I prefer: 
@Test
public void shouldSayHelloToTheGivenName() throws Exception {
        // given
        PrintStream mockStream = mock(PrintStream.class);        
        Greeter greeter = new Greeter(mockStream);

        // when
        greeter.helloworld(”toni”);

        // then
        verify(mockStream).println(”Hello world, toni”);
}
The test is of course using the beautiful test double framework Mockito