Junit ?????:

Junit? ?? ?? Java ?? ??? ????????.

??? junit5? ???????. junit5? Junit Platform, Junit Jupiter, Junit Vintage ? ? ?? ?? ???? ??? ???? ????. Java 8 ??? ?????. ??? ???? ???? IntelliJ IDEA???. ?? ????? ??? ?????? ???? ?? ??? ???? ???. ? ?? ??? ???? ????? ????? Junit? ?? ???? ???? ?????. ?? ?? ?? ??? ??? ????.

?? ??? ??? ??? ?? ?? ??? ??? ??, ?? ? ?????.

Junit? ????? ???? ?? ?????.

1. ??? ?? ??: ?? ?? ??? ?? ??? ??? ?????.

2. ??? ?? ??: ??? ??? ?? ??? ???? ???? ???? ???? ?? ???? ?????. ????? ??? ?? ????? ??? ???? ?? ???? ??? ?? ??? ???? ?????.

3. ??? ?? ??: ??? ???? ???? ??? ??? ????.

4. ??? ?? ??: ??? ??? ??? ?? ??? ????, ??? ??? ????, ??? ?? ?????.

???? ?? ??? ???????.

@Test: ??? ???? ?? ??? ??? ?????.

@ParameterizedTest: ???? ??? ????? ?????. ?? ? ??? ???? ?? ??? ???? ??? ???? ?? ? ??? ?? ????.

@RepeatedTest: ? ??? ???? ??? ????? ?? ?? ??? ?? ??? ? ????.

@TestFactory: ???? ??? ?? ?? ??? ??? ??? ???? ?? ?????.

@Displayname: ??? ??? ?? ??? ???? ?? ??? ?? ?? ??? ?????.

@BeforeEach: ? ??? ???? ???? ?? ??? ???? ???? ?????.

@AfterEach: ? ??? ???? ??? ?? ??? ???? ???? ?????.

@BeforeAll: ?? ???? ?? ??? ????? ?? ???? ? ????? ?? ??? ??? ??? ? ????.

@AfterAll: ?? ???? ?? ??? ??? ??? ?????.

@Disabled: ??? ??? ?? ???? ???? ??? ?????.

???:

??: ??? ???? ??????.

AssertTrue/asserFalse: ? ?? ??? ?????.

AssertNull/assertNotNull: Assert? null??? null? ????.

assertEquals/assertNotEquals: ? ?? ???? ??? ?????.

AssertArrayEquals: ?? ?? ??? ????? ?????.

AssertSame/assertNotSame: ? ??? ???? ??? ?????.

AssertThrows/assertDoesNotThrow: ??? ????? ??? ?????.

AssertAll: ?? ??? ????? ??

???? ???? ??? ?? ???? ????.

package test;//包機(jī)制
import java.lang.reflect.Array;
public class MixedOperation {
    public int mixeOperation(int x,int y){
        return division((x+y),y);
    }
    public int division(int x,int y){
        int result=(x/y);
        return result;
    }
    public static void main(String[] args) {
      MixedOperation mixedOperation=new MixedOperation();
      System.out.println(mixedOperation.mixeOperation(5,1));
    }
}

MixedOperation??? ???? ????.

package test;
import org.junit.jupiter.api.*;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvSource;
public class MixedOperationTest {
    private MixedOperation mixedOperation;
    @BeforeEach
    public void init(){
      mixedOperation=new MixedOperation();
    }
    @Test
    public void successTest(){
        System.out.println("run a test:x=4,y=2");
        int result=mixedOperation.mixeOperation(4,2);
        Assertions.assertEquals(3,result);
    }
   /* @DisplayName("失敗")
    public void errorTest(){`
        System.out.println("run a test:x=4,y=0");
        ArithmeticException exception=new ArithmeticException(
                ArithmeticException.class -> {
            mixedOperation.mixeOperation(4, 0);
        }
        );
    }*/
    @Disabled("參數(shù)")
    @Test
    @DisplayName("參數(shù)")
    @ParameterizedTest
    @CsvSource({"6,3,3","5,2,3","6,2,4"})
    public void caTest(int x,int y,int excepted){
        System.out.println("run a test :x="+x+"y="+y);
        System.out.println(excepted);
        int t= mixedOperation.mixeOperation(x,y);
        Assertions.assertEquals(excepted,t);
    }
    @Disabled
    @Test
    public void  Next(){
       System.out.println("拋出一個(gè)異常");
       System.out.println(Assertions.assertThrows(IllegalArgumentException.class, () ->mixedOperation.mixeOperation(2,0)));
    }
    @Disabled
    @Test
    void error(){
        Assertions.assertThrows(Exception.class,()->{Assertions.assertEquals(1,0);});
    }
    @Test
    void sure(){
        int result=mixedOperation.mixeOperation(4,2);
        Assertions.assertTrue(3==result);//斷言相等
    }
}

??? MixedOperationTest Class?? ???? ????. ??: "

"

? ??? ????? ??? ?????(JUnit) ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!