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JMockit is a Java toolkit for automated developer testing. It contains mocking/faking APIs and a code coverage tool, supporting both JUnit and TestNG. The mocking APIs allow all kinds of Java code, without testability restrictions, to be tested in isolation from selected dependencies.

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/*
 * Copyright (c) 2006 JMockit developers
 * This file is subject to the terms of the MIT license (see LICENSE.txt).
 */
package mockit.internal.injection;

import javax.annotation.*;

import mockit.internal.injection.InjectionPoint.*;
import mockit.internal.injection.field.*;
import mockit.internal.injection.full.*;

public final class BeanExporter
{
   @Nonnull private final InjectionState injectionState;

   BeanExporter(@Nonnull InjectionState injectionState) { this.injectionState = injectionState; }

   @Nullable
   public Object getBean(@Nonnull String name) {
      InjectionPoint injectionPoint = new InjectionPoint(Object.class, name, true);
      Object bean = injectionState.getInstantiatedDependency(null, injectionPoint);
      return bean;
   }

   @Nullable
   public  T getBean(@Nonnull Class beanType) {
      TestedClass testedClass = new TestedClass(beanType, beanType);
      String beanName = getBeanNameFromType(beanType);

      injectionState.injectionProviders.setTypeOfInjectionPoint(beanType, KindOfInjectionPoint.NotAnnotated);
      InjectionProvider injectable = injectionState.injectionProviders.findInjectableByTypeAndName(beanName, testedClass);

      if (injectable != null) {
         Object testInstance = injectionState.getCurrentTestClassInstance();
         @SuppressWarnings("unchecked") T bean = (T) injectable.getValue(testInstance);
         return bean;
      }

      FullInjection injection = new FullInjection(injectionState, beanType, beanName);
      Injector injector = new FieldInjection(injectionState, injection);

      @SuppressWarnings("unchecked") T bean = (T) injection.createOrReuseInstance(testedClass, injector, null, beanName);
      return bean;
   }

   @Nonnull
   private static String getBeanNameFromType(@Nonnull Class beanType) {
      String name = beanType.getSimpleName();
      return Character.toLowerCase(name.charAt(0)) + name.substring(1);
   }
}