Springboot 2.0.0单元测试

1. 引入spring-boot-starter-test包

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>java8demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>java8demo</name>
    <description>Java8 Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <!--<scope>test</scope>-->
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

2. 记得在自己测试时，导包有问题的话，是要记得去掉spring-boot-starter-test中的scope范围，只需要三个注解就行

package com.example.java8demo;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAdjusters;
import java.util.Set;

/**
 * java 8 对于日期和时间的使用
 * API文档：https://blog.fondme.cn/apidoc/jdk-1.8-google/下的java.time包下
 */
@RunWith(SpringRunner.class)
@SpringBootTest // 指定启动类
public class LocalDateTimeTest {
      /**
     * 5. DateTimeFormatter : 解析和格式化日期或时间
     */
    @Test
    public void test5(){
        
        DateTimeFormatter dateTimeFormater = DateTimeFormatter.ofPattern("yyyy年MM月dd日 HH时mm分ss秒");
        LocalDateTime localDateTime = LocalDateTime.now();
        System.out.println("【----未格式化之前----】" + localDateTime);
        System.out.println("【----格式化之后----】"+dateTimeFormater.format(localDateTime));
    }
}

官方文档，可参考：https://docs.spring.io/spring-boot/docs/2.0.5.RELEASE/reference/htmlsingle/#boot-features-testing