使用JUnit5和JUnit4需要哪些依赖关系？

Question

            <dependency>
                <groupId>org.junit.platform</groupId>
                <artifactId>junit-platform-surefire-provider</artifactId>
                <version>1.0.0-M4</version>
            </dependency>

更新-所以肯定是为了搜索丢失的依赖项，这是为了什么？

   <dependency>
    <groupId>org.junit.platform</groupId>
    <artifactId>junit-platform-launcher</artifactId>
   <version>1.4.0-M1</version>
   <scope>test</scope>
     </dependency>
     <dependency>
     <groupId>org.junit.platform</groupId>
      <artifactId>junit-platform-runner</artifactId>
      <version>1.4.0-M1</version>
     <scope>test</scope>
  </dependency>
      <dependency>
      <groupId>org.junit.platform</groupId>
      <artifactId>junit-platform-suite-api</artifactId>
        <version>1.4.0-M1</version>
       <scope>test</scope>
   </dependency>
    <dependency>
       <groupId>org.junit.platform</groupId>
         <artifactId>junit-platform-surefire-provider</artifactId>
        <version>1.3.2</version>
        <scope>test</scope>
      </dependency>
         <dependency>
         <groupId>org.junit.vintage</groupId>
      <artifactId>junit-vintage-engine</artifactId>
          <version>5.4.0-M1</version>
          <scope>test</scope>
      </dependency>

Answer 1

问题：肯定火对所有这些都有什么作用？

如果在pom.xml中没有很好地提到依赖项，那么Surefire将检测要使用哪个JUnit版本。

Surefire支持3代不同的JUnit:JUnit 3.8.x、JUnit 4.x（串行提供程序）和JUnit 4.7（具有并行支持的JUnit核心提供程序）

if the JUnit 5 Platform Engine is present in the project
    use junit-platform
if the JUnit version in the project >= 4.7 and the <<<parallel>>> configuration parameter has ANY value
    use junit47 provider
if JUnit >= 4.0 is present
    use junit4 provider
else
    use junit3.8.1

<dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>${junit.jupiter.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-params</artifactId>
            <version>${junit.jupiter.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>${junit.jupiter.version}</version>
            <scope>test</scope>
        </dependency>