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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 java.io.*;
import java.lang.reflect.*;
import java.security.*;
import javax.annotation.*;

import mockit.internal.reflection.*;
import mockit.internal.util.*;

public final class TestedClass
{
   @Nonnull final Type declaredType;
   @Nonnull final Class declaredClass;
   @Nonnull public final Class targetClass;
   @Nonnull public final GenericTypeReflection reflection;
   @Nonnull final ProtectionDomain protectionDomainOfTestedClass;
   @Nullable final String codeLocationParentPath;
   @Nonnull public final String nameOfTestedClass;
   @Nullable public final TestedClass parent;
   @Nullable public Class testClass;

   public TestedClass(@Nonnull Type declaredType, @Nonnull Class targetClass) {
      this(declaredType, targetClass, null);
   }

   public TestedClass(@Nonnull Type declaredType, @Nonnull Class targetClass, @Nullable TestedClass parent) {
      this.declaredType = declaredType;
      declaredClass = Utilities.getClassType(declaredType);
      this.targetClass = targetClass;
      reflection = new GenericTypeReflection(declaredClass, declaredType, false);
      protectionDomainOfTestedClass = declaredClass.getProtectionDomain();
      CodeSource codeSource = protectionDomainOfTestedClass.getCodeSource();
      codeLocationParentPath = codeSource == null || codeSource.getLocation() == null ?
         null : new File(codeSource.getLocation().getPath()).getParent();
      nameOfTestedClass = declaredClass.getName();
      this.parent = parent;
   }

   @Nonnull
   public Class getDeclaredClass() { return declaredClass; }

   public boolean isClassFromSameModuleOrSystemAsTestedClass(@Nonnull Class anotherClass) {
      if (anotherClass.getClassLoader() == null) {
         return false;
      }

      ProtectionDomain anotherProtectionDomain = anotherClass.getProtectionDomain();

      if (anotherProtectionDomain == null) {
         return false;
      }

      if (anotherProtectionDomain == protectionDomainOfTestedClass) {
         return true;
      }

      CodeSource anotherCodeSource = anotherProtectionDomain.getCodeSource();

      if (anotherCodeSource == null || anotherCodeSource.getLocation() == null) {
         return false;
      }

      if (codeLocationParentPath != null) {
         String anotherClassPath = anotherCodeSource.getLocation().getPath();
         String anotherClassParentPath = new File(anotherClassPath).getParent();

         if (anotherClassParentPath.equals(codeLocationParentPath)) {
            return true;
         }
      }

      return isInSameSubpackageAsTestedClass(anotherClass);
   }

   private boolean isInSameSubpackageAsTestedClass(@Nonnull Class anotherClass) {
      String nameOfAnotherClass = anotherClass.getName();
      int p1 = nameOfAnotherClass.indexOf('.');
      int p2 = nameOfTestedClass.indexOf('.');
      boolean differentPackages = p1 != p2 || p1 == -1;

      if (differentPackages) {
         return false;
      }

      p1 = nameOfAnotherClass.indexOf('.', p1 + 1);
      p2 = nameOfTestedClass.indexOf('.', p2 + 1);
      boolean eitherClassDirectlyInFirstPackageLevel = p1 == -1 || p2 == -1;

      if (eitherClassDirectlyInFirstPackageLevel) {
         return true;
      }

      boolean differentSubpackages = p1 != p2;

      return !differentSubpackages && nameOfAnotherClass.substring(0, p1).equals(nameOfTestedClass.substring(0, p2));
   }
}




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