java junit

1import org.junit.Assert;
2import org.junit.Test;
3
4public class Test {
5
6    public static int square(int n) {
7        return n * n;
8    }
9
10    @Test
11    public void squareTest() {
12        Assert.assertEquals(25, square(5));
13        Assert.assertEquals(16, square(4));
14        Assert.assertEquals(9, square(3));
15        Assert.assertEquals(4, square(2));
16        Assert.assertEquals(1, square(1));
17    }
18}
19

1import org.junit.Assert;
2import org.junit.Test;
3
4public class Test {
5
6    public static int square(int n) {
7        return n * n;
8    }
9
10    @Test
11    public void squareTest() {
12        Assert.assertEquals(25, square(5));
13        Assert.assertEquals(16, square(4));
14        Assert.assertEquals(9, square(3));
15        Assert.assertEquals(4, square(2));
16        Assert.assertEquals(1, square(1));
17    }
18}

1-It is an open-source testing framework for java programmers. 
2-Test runner support to execute the test case
3-It is one of the unit testing framework.
4-Assertion support for checking the expected result.
5-Annotation support for test cases

1@Test