根據上一篇blog，看到日志1流程：

surefire.ForkedBooter -> ForkedBooter.runSuitesInProcess

-> ForkedBooter.invokeProviderInSameClassLoader
-> surefire.junit4.JUnit4Provider.invoke -> executeTestSet -> executeWithRerun
-> execute
-> junit.runners.ParentRunner.run -> evaluate -> runChildren -> schedule -> run
-> BlockJUnit4ClassRunner.runChild
-> junit.runners.ParentRunner.runLeaf
-> junit.rules.RunRules.evaluate
-> org.junit.internal.runners.statements.RunBefores.evaluate
-> junit.runners.model.FrameworkMethod.invokeExplosively
-> junit.internal.runners.model.ReflectiveCallable.run

-> junit.runners.model.FrameworkMethod.runReflectiveCall

這是 一個junit的版本調用過程，不同junit 版本，調用類不同，如日志2

-> ForkedBooter.invokeProviderInSameClassLoader
-> surefire.junit4.JUnit4Provider.invoke -> executeTestSet -> executeWithRerun
-> execute
-> junit.runners.ParentRunner.run -> evaluate -> runChildren -> schedule -> run

-> BlockJUnit4ClassRunner.runChild

->?org.junit.internal.runners.statements.InvokeMethod.evaluate

->?org.junit.runners.model.FrameworkMethod.invokeExplosively

->??org.junit.internal.runners.model.ReflectiveCallable.run
->? org.junit.runners.model.FrameworkMethod$1.runReflectiveCall

InvokeMethod 了類代碼：

public class InvokeMethod extends Statement {private final FrameworkMethod fTestMethod;private Object fTarget;public InvokeMethod(FrameworkMethod testMethod, Object target) {fTestMethod= testMethod;fTarget= target;}@Overridepublic void evaluate() throws Throwable {fTestMethod.invokeExplosively(fTarget);}

Statement:

public abstract class Statement {/*** Run the action, throwing a {@code Throwable} if anything goes wrong.*/public abstract void evaluate() throws Throwable; }

FrameworkMethod代碼：

public class FrameworkMethod {private final Method fMethod;/*** Returns a new {@code FrameworkMethod} for {@code method}*/public FrameworkMethod(Method method) {fMethod= method;}/*** Returns the underlying Java method*/public Method getMethod() {return fMethod;}/*** Returns the result of invoking this method on {@code target} with* parameters {@code params}. {@link InvocationTargetException}s thrown are* unwrapped, and their causes rethrown.*/public Object invokeExplosively(final Object target, final Object... params)throws Throwable {return new ReflectiveCallable() {@Overrideprotected Object runReflectiveCall() throws Throwable {return fMethod.invoke(target, params);}}.run();}/*** Returns the method's name*/public String getName() {return fMethod.getName();}/*** Adds to {@code errors} if this method:* <ul>* <li>is not public, or* <li>takes parameters, or* <li>returns something other than void, or* <li>is static (given {@code isStatic is false}), or* <li>is not static (given {@code isStatic is true}).*/public void validatePublicVoidNoArg(boolean isStatic, List<Throwable> errors) {validatePublicVoid(isStatic, errors);if (fMethod.getParameterTypes().length != 0)errors.add(new Exception("Method " + fMethod.getName() + " should have no parameters"));}/*** Adds to {@code errors} if this method:* <ul>* <li>is not public, or* <li>returns something other than void, or* <li>is static (given {@code isStatic is false}), or* <li>is not static (given {@code isStatic is true}).*/public void validatePublicVoid(boolean isStatic, List<Throwable> errors) {if (Modifier.isStatic(fMethod.getModifiers()) != isStatic) {String state= isStatic ? "should" : "should not";errors.add(new Exception("Method " + fMethod.getName() + "() " + state + " be static"));}if (!Modifier.isPublic(fMethod.getDeclaringClass().getModifiers()))errors.add(new Exception("Class " + fMethod.getDeclaringClass().getName() + " should be public"));if (!Modifier.isPublic(fMethod.getModifiers()))errors.add(new Exception("Method " + fMethod.getName() + "() should be public"));if (fMethod.getReturnType() != Void.TYPE)errors.add(new Exception("Method " + fMethod.getName() + "() should be void"));}boolean isShadowedBy(List<FrameworkMethod> results) {for (FrameworkMethod each : results)if (isShadowedBy(each))return true;return false;}private boolean isShadowedBy(FrameworkMethod each) {if (!each.getName().equals(getName()))return false;if (each.getParameterTypes().length != getParameterTypes().length)return false;for (int i= 0; i < each.getParameterTypes().length; i++)if (!each.getParameterTypes()[i].equals(getParameterTypes()[i]))return false;return true;}@Overridepublic boolean equals(Object obj) {if (!FrameworkMethod.class.isInstance(obj))return false;return ((FrameworkMethod) obj).fMethod.equals(fMethod);}@Overridepublic int hashCode() {return fMethod.hashCode();}/*** Returns true iff this is a no-arg method that returns a value assignable* to {@code type}*/public boolean producesType(Class<?> type) {return getParameterTypes().length == 0&& type.isAssignableFrom(fMethod.getReturnType());}private Class<?>[] getParameterTypes() {return fMethod.getParameterTypes();}/*** Returns the annotations on this method*/public Annotation[] getAnnotations() {return fMethod.getAnnotations();}/*** Returns the annotation of type {@code annotationType} on this method, if* one exists.*/public <T extends Annotation> T getAnnotation(Class<T> annotationType) {return fMethod.getAnnotation(annotationType);} }ReflectiveCallable類：
public abstract class ReflectiveCallable {public Object run() throws Throwable {try {return runReflectiveCall();} catch (InvocationTargetException e) {throw e.getTargetException();}}protected abstract Object runReflectiveCall() throws Throwable; }

總結

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