您好我正在尝试使用junit而且它不能正常工作。
这是我的代码。
package safe;
import java.lang.reflect.*;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import safe.SafetyException;
public class SafetyInspector {
public static boolean isSafe(Class<?> clazz) throws SafetyException{
if (clazz.equals(Object.class)) return true;
if (clazz == null ) {
throw new SafetyException();
}
Field fields[] = clazz.getDeclaredFields();
for(Field f: fields){
f.setAccessible(true);
int mod = f.getModifiers();
if (Modifier.isFinal(mod)){
continue;
}
else if (Modifier.isPrivate(mod)){
Class<?> typeArray[] = new Class<?>[1] ;
typeArray[0] = f.getType();
try {
Method mSet = clazz.getMethod("set" + f.getName().substring(0, 0).toUpperCase() + f.getName().substring(1),typeArray );
int modMet = mSet.getModifiers();
if(!Modifier.isPublic(modMet)) return false;
if(!mSet.getReturnType().equals(void.class)) return false;
}
catch (SecurityException e) {
throw new SafetyException();
}
catch (NoSuchMethodException e) {
return false;
}
try {
Class<?> typeArray2[] = new Class<?>[1] ;
Method mGet = clazz.getMethod("get" + f.getName().substring(0, 0).toUpperCase() + f.getName().substring(1),typeArray2);
int modMet2 = mGet.getModifiers();
if(!Modifier.isPublic(modMet2)) return false;
if(!mGet.getReturnType().equals(f.getType())) return false;
}
catch (SecurityException e) {
throw new SafetyException() ;
}
catch (NoSuchMethodException e) {
return false;
}
}
}
return isSafe(clazz.getSuperclass());
}
public static void sort(List<Class<?>> classes) throws SafetyException{
for (int i = 1; i < classes.size(); i++) {
for (int j = 0; j < classes.size() - i; j++) {
if (compare(classes.get(j), classes.get(j + 1)) > 0) {
swap(classes, j);
}
}
}
}
public static void reset(Object object) throws SafetyException{
Class c = object.getClass();
Field fields[] = c.getDeclaredFields();
for(Field f :fields ){
if (!isSafe(f.getClass()))
{
f.setAccessible(true);
try{
if(!f.getClass().isPrimitive()){
}
else if(f.getClass().equals(boolean.class)){
f.setBoolean(object, false);
}
else{
f.set(object, 0);
}
}
catch(Exception e)
{
throw new SafetyException();
}
}
}
}
private static int compare(Class<?> o1, Class<?> o2) throws SafetyException {
Field[] fields1 = o1.getDeclaredFields();
int count1 = 0;
for (Field f : fields1){
if (isSafe(f.getClass())) count1++;
}
Field[] fields2 = o2.getDeclaredFields();
int count2 = 0;
for (Field f : fields2){
if (isSafe(f.getClass())) count2++;
}
if (count1 == count2)
return o1.getName().compareTo(o2.getName());
else return count1- count2;
}
private static void swap(List<Class<?>> list, int j) {
Class<?> temp = list.get(j);
list.set(j, list.get(j+1));
list.set(j + 1, temp);
}
};
这是他们给我的代码junit测试。
package test;
import static org.junit.Assert.assertEquals;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import org.junit.Test;
import safe.SafetyException;
import safe.SafetyInspector;
public class SafetyInspectorTest {
@Test
public void testIsSafeEmployee() throws SafetyException {
assertEquals(false, SafetyInspector.isSafe(Employee.class));
}
@Test
public void testResetEmployee() throws SafetyException {
Employee e = new Employee(123,3000);
SafetyInspector.reset(e);
assertEquals(0, e.id);
assertEquals(3000, e.getSalary());
}
@Test
public void testSort() throws SafetyException {
List<Class<?>> sortedClasses = new LinkedList<Class<?>>();
sortedClasses.add(Employee.class);
List<Class<?>> classes = new LinkedList<Class<?>>(sortedClasses);
Collections.shuffle(classes);
SafetyInspector.sort(classes);
assertEquals(sortedClasses, classes);
}
}
当我将safetyInspectorTest作为junitTESTCLASS运行时,我收到初始化错误。如果有帮助我和eclipse合作,我把Junit作为项目的库。
答案 0 :(得分:0)
JUnit中的初始化错误通常是由错误的类路径引起的。看到这个也遇到初始化错误的相关问题: Eclipse JUnit - possible causes of seeing "initializationError" in Eclipse window
最可能的原因是,在解决了这个问题时,您正在使用需要添加hamcrest jar的JUnit 4版本。您应该能够在项目的Java Build Path中添加JUnit 4库,而不是添加junit和hamcrest jar。
您的导入很大程度上看起来是良性的,但您应该确认safe.SafetyException在您的类路径上。
最后,初始化错误可能是由于在测试运行之前加载的代码中的静态初始化失败引起的。您发布的代码看起来很安全,但SafetyException类可能有一个要检查的初始化块。