Demo :: Good unit test with JUnit

1.java

@Test
public void getMyImage() {
	Fixture.useDefaultResourceManager();
	ResourceManager resourceManager = getResourceManager();
	assertFalse(resourceManager.isRegistered(Fixture.IMAGE1));
	
	Image image1 = Graphics.getImage(Fixture.IMAGE1);
	String imagePath = getRegisterPath(image1);
	assertTrue(resourceManager.isRegistered(imagePath));
	
	File directory = new File(pathname);
	assertTrue(new File(directory, imagePath).exists());
	
	Image sameImage = Graphics.getImage(Fixture.IMAGE1);
	assertSame(image1, sameImage);
}

2.java

@Test
public void testFizzBuzze(){
	FizzBuzz fizzBuzz = new FizzBuzz();
	
	String result = fizzBuzz.say(1);
	
	assertEquals("1", result);
}

3.java

@Test
public void sayOne(){
	FizzBuzz fizzBuzz = new FizzBuzz();
	String result = fizzBuzz.say(1);
	assertEquals("1", actual);
}

@Test
public void sayTwo(){
	FizzBuzz fizzBuzz = new FizzBuzz();
	String result = fizzBuzz.say(2);
	assertEquals("2", actual);
}

4.java

FizzBuzz fizzBuzz;

@Before
public void setUp() {
        FizzBuzz = new FizzBuzz();
}

@Test
public void sayOne() {	
	String result = fizzBuzz.say(1);
	assertEquals("1", actual);
}

@Test
public void sayTwo() {
	String result = fizzBuzz.say(2);
	assertEquals("2", actual);
}

5.java

@Test
public void exceedRange() {
	NumberRangeCounter counter = new NumberRangeCounter(LOWER_BOUND, 0);

	try {
		counter.next();
		fail();
	} catch (IllegalStateException expected) {
	}
}

6.java

@Test(expected=IllegalStateException.class)
public void exceedRange() {
	NumberRangeCounter counter = new NumberRangeCounter(LOWER_BOUND, 0);
	counter.next();
}

7.java

@Rule
public ExpectedException thrown = ExpectedException.none();

@Test
public void exceedRange() {
	thrown.expect(IllegalStateException.class);
	new NumberRangeCounter(LOWER_BOUND, 0).next();
}