所有程序包的分层结构
类分层结构
- java.lang.Object
- org.junit.runner.Runner (implements org.junit.runner.Describable) 
- org.junit.runners.ParentRunner<T> (implements org.junit.runner.manipulation.Filterable, org.junit.runner.manipulation.Sortable) 
- org.junit.runners.BlockJUnit4ClassRunner 
- org.springframework.boot.junit.runner.classpath.ModifiedClassPathRunner
 
 
 - org.junit.runners.BlockJUnit4ClassRunner 
 
 - org.junit.runners.ParentRunner<T> (implements org.junit.runner.manipulation.Filterable, org.junit.runner.manipulation.Sortable) 
 - org.springframework.boot.junit.compiler.TestCompiler
 - org.springframework.boot.junit.compiler.TestCompiler.TestCompilationTask
 
 - org.junit.runner.Runner (implements org.junit.runner.Describable) 
 
注释类型分层结构
- org.springframework.boot.junit.runner.classpath.ClassPathExclusions (implements java.lang.annotation.Annotation)
 - org.springframework.boot.junit.runner.classpath.ClassPathOverrides (implements java.lang.annotation.Annotation)