private void assertStandardClassLoaderCannotFindClass(String className) {
try {
testObject.findClass(className);
fail("Should not be able to find this class in standard ClassLoader");
} catch (Exception e) {
}
}
@Test
public void findClassDoesNotTryToRedefineClassesTwice() throws Exception {
assertStandardClassLoaderCannotFindClass(testClassName);
final byte[] loadedClassContent = FileUtils.readFileToByteArray(testClassFile);
InMemoryClassFile classFileObject =
new InMemoryClassFile(testClassName) {
@Override
public byte[] getBytes() {
return loadedClassContent;
};
};
testObject.addClass(testClassName, classFileObject);
testObject.findClass(testClassName);
testObject.findClass(testClassName);
}
@Test
public void findClassTriesTheHashMapFirst() throws Exception {
assertStandardClassLoaderCannotFindClass(testClassName);
final byte[] loadedClassContent = FileUtils.readFileToByteArray(testClassFile);
InMemoryClassFile classFileObject =
new InMemoryClassFile(testClassName) {
@Override
public byte[] getBytes() {
return loadedClassContent;
};
};
testObject.addClass(testClassName, classFileObject);
Class<?> clazz = testObject.findClass(testClassName);
assertNotNull(clazz);
}
@Test
public void ifClassCannotBeFoundAtAllThrowARuntimeExceptionWrappedClassNotFoundException()
throws Exception {
try {
testObject.findClass(testClassName);
fail("Should have thrown a runtime exception");
} catch (RuntimeException e) {
}
}
@Test
public void findClassTriesFilesystemSecond() throws Exception {
File folderHierarchy = new File(currentDirectory, testPackageName.replace(".", "/"));
folderHierarchy.mkdirs();
assertStandardClassLoaderCannotFindClass(testClassName);
FileUtils.copyFile(testClassFile, new File(folderHierarchy, testFileName));
Class<?> clazz = testObject.findClass(testClassName);
assertNotNull(clazz);
}