main/src/test/java/org/objenesis/instantiator/basic/ClassDefinitionUtilsTest.java

/**
 * Copyright 2006-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.objenesis.instantiator.basic;

import org.junit.Test;

import static org.junit.Assert.*;

/**
 * @author Henri Tremblay
 */
public class ClassDefinitionUtilsTest {

   String className = "org.objenesis.EmptyClass";

   @Test
   public void testDefineClass() throws Exception {
      byte[] b = ClassDefinitionUtils.readClass(className);
      Class<?> c = ClassDefinitionUtils.defineClass(className, b, getClass().getClassLoader());
      assertEquals(c.getName(), className);
   }

   @Test
   public void testClassNameToInternalClassName() {
      String actual = ClassDefinitionUtils.classNameToInternalClassName(className);
      assertEquals("org/objenesis/EmptyClass", actual);
   }

   @Test
   public void testClassNameToResource() {
      String actual = ClassDefinitionUtils.classNameToResource(className);
      assertEquals("org/objenesis/EmptyClass.class", actual);
   }

   @Test
   public void testGetExistingClass_existing() {
      Class<?> actual = ClassDefinitionUtils.getExistingClass(getClass().getClassLoader(),
         getClass().getName());
      assertSame(actual, getClass());
   }

   @Test
   public void testGetExistingClass_notExisting() {
      Class<?> actual = ClassDefinitionUtils.getExistingClass(getClass().getClassLoader(), getClass().getName() + "$$$1");
      assertNull(actual);
   }
}