SpringBoot详细讲解断言机制原理

package com.limi.springboottest2;
import org.junit.jupiter.api.*;
import org.springframework.boot.test.context.SpringBootTest;
import static org.junit.jupiter.api.Assertions.*;
@SpringBootTest
public class JTest5 {
    @Test
    public void simple() {
        assertEquals(3, 1 + 2, "simple math");
        System.out.println(1);
        assertNotEquals(3, 1 + 1);
        System.out.println(2);
        assertNotSame(new Object(), new Object());
        System.out.println(3);
        Object obj = new Object();
        assertSame(obj, obj);
        System.out.println(4);
        assertFalse(3 > 2);
        System.out.println(5);
        assertTrue(1 < 2);
        System.out.println(6);
        assertNull(null);
        System.out.println(7);
        assertNotNull(new Object());
        System.out.println(8);
    }
}

	//不相等抛出异常
    @Test
    public void array() {
        assertArrayEquals(new int[]{1, 2}, new int[] {1, 2, 3});
    }

	//除非填写的断言都为真, 否则抛出异常
    @Test
    public void all() {
        assertAll("Math",
                () -> assertEquals(2, 1 + 1),
                () -> assertTrue(1 > 5),
                () -> assertNotNull(null)
        );
    }

    @Test
    public void exceptionTest() {
        ArithmeticException exception = Assertions.assertThrows(
                //当没有异常时, 扔出断言异常
                ArithmeticException.class, () -> System.out.println(5/ 2));
    }

    @Test@DisplayName("超时测试")public void timeoutTest() {
        //如果测试方法执行时间超过设置的时间将会抛出异常    
        Assertions.assertTimeout(Duration.ofMillis(1000), () -> Thread.sleep(5000));
    }

    @Test
    public void shouldFail() {
        System.out.println("123456");
        fail("This should fail");
        System.out.println("888888");
    }