spring-boot-starter-test junit 是什么关系

spring-boot-starter-test是包含junit的通过点击spring-boot-starter-test 查看他的依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starters</artifactId>
    <version>2.0.5.RELEASE</version>
  </parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-test</artifactId>
  <version>2.0.5.RELEASE</version>
  <name>Spring Boot Test Starter</name>
  <description>Starter for testing Spring Boot applications with libraries including
        JUnit, Hamcrest and Mockito</description>
  <url>https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter-test</url>
  <organization>
    <name>Pivotal Software, Inc.</name>
    <url>https://spring.io</url>
  </organization>
  <licenses>
    <license>
      <name>Apache License, Version 2.0</name>
      <url>http://www.apache.org/licenses/LICENSE-2.0</url>
    </license>
  </licenses>
  <developers>
    <developer>
      <name>Pivotal</name>
      <email>[e-mail]</email>
      <organization>Pivotal Software, Inc.</organization>
      <organizationUrl>http://www.spring.io</organizationUrl>
    </developer>
  </developers>
  <scm>
    <connection>scm:git:git://github.com/spring-projects/spring-boot.git/spring-boot-starters/spring-boot-starter-test</connection>
    <developerConnection>scm:git:ssh://[e-mail]/spring-projects/spring-boot.git/spring-boot-starters/spring-boot-starter-test</developerConnection>
    <url>http://github.com/spring-projects/spring-boot/spring-boot-starters/spring-boot-starter-test</url>
  </scm>
  <issueManagement>
    <system>Github</system>
    <url>https://github.com/spring-projects/spring-boot/issues</url>
  </issueManagement>
  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
      <version>2.0.5.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-test</artifactId>
      <version>2.0.5.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-test-autoconfigure</artifactId>
      <version>2.0.5.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>compile</scope>
    </dependency>
    
  </dependencies>
</project>

可以看到他依赖 junit并且  <scope>compile</scope>  根据Maven 的依赖传递性 要使 当前项目依赖junit 当且仅当 spring-boot-starter-test 依赖于junit的范围是compile时

当前项目依赖junit 可以看到junit 的范围是compile 所以当前项目依赖junit  也就是说你依赖了 spring-boot-starter-test  也就依赖了junit