JUnit4

1.javadoc: http://junit.org/javadoc/latest/index.html

2.lib:

2.1.  https://code.google.com/archive/p/hamcrest/downloads

 hamcrest-core-xx.jar and hamcrest-library-xx.jar are for the assertThat function.

2.2. https://github.com/junit-team/junit/wiki/Download-and-Install
http://search.maven.org/#search|gav|1|g:%22junit%22%20AND%20a:%22junit%22

 junit-4.12.jar is for junit.

3.assertThat:
        int z = new T1().add(5,3);
//        assertEquals(8, z);
//        assertTrue(z>3);
//       // assertTrue(z>10);
//        assertTrue("heeeee",z>10);
     
        assertThat(z, is(8));
        assertThat(z,allOf(greaterThan(5),lessThan(10)));
/*
assertThat(n,allOf(greaterThan(1),lessThan(15)));
assertThat(n,anyOf(greaterThan(16),lessThan(8)));
assertThat(n,anything());
assertThat(str,is("junit4test"));
assertThat(str,not("junit4test"));

assertThat(str,containsString("junit4test"));
assertThat(str,endsWith("junit4test"));
assertThat(str,startsWith("junit4test"));
assertThat(n,equalTo(nExpected));
assertThat(str,equalToIgnoringCase("junit4testWorks"));
assertThat(str,equalToIgnoringWhiteSpace("junit4testWorks")); 

assertThat(d,closeTo(3.0,0.3)); 接近3.0，误差不大于0.3
assertThat(d,greaterThan(3.0));
assertThat(d,lessThan(10.0));
assertThat(d,greaterThanOrEqualTo(5.0));
assertThat(d,lessThanOrEqualTo(16.0)); 

assertThat(map,hasEntry("junit4test","junit4test"));
assertThat(iterable,hasItem("junit4test"));
assertThat(map,hasKey("junit4test"));
assertThat(map,hasValue("junit4test"));

 */
4.annotation
      @Ignore
    @Test(expected=java.lang.ArithmeticException.class,timeout=100)
//or @Test
    public void testDivide(){
        int z = new T1().divide(8, 0);
        int a = new T1().divide(2, 1);
        assertThat(a ,is(2));
    }
    @Before
    public void before(){
        System.out.println("It is before each @Test functon.E.g. read config file");
    }
    @After
    public void after(){
        System.out.println("It is after each @Test functon");
    }
    @BeforeClass
    public static void beforeClass(){
        System.out.println("It is running before this class be a instance.E.g. open DB");
    }
    @AfterClass
    public static void afterClass(){
        System.out.println("It is running After this class be a instance.E.g. close DB");
    }
 5. Run As->Run Configuration:
option: Run all test in the selected project, package or source folder:

testNG