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package com.vaadin.data;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.net.URL;
import java.net.URLClassLoader;
import org.apache.commons.io.IOUtils;
import org.hibernate.validator.constraints.NotEmpty;
import org.junit.Test;
import com.vaadin.tests.data.bean.BeanToValidate;
import com.vaadin.ui.TextField;
/**
* @author Vaadin Ltd
*
*/
public class NotEmptyTest {
private static String NOT_EMPTY = "org.hibernate.validator.constraints.NotEmpty";
private static class TestClassLoader extends URLClassLoader {
public TestClassLoader() {
super(new URL[0], Thread.currentThread().getContextClassLoader());
}
@Override
public Class<?> loadClass(String name) throws ClassNotFoundException {
String vaadinPackagePrefix = getClass().getPackage().getName();
vaadinPackagePrefix = vaadinPackagePrefix.substring(0,
vaadinPackagePrefix.lastIndexOf('.'));
if (name.equals(UnitTest.class.getName())) {
super.loadClass(name);
} else if (name.startsWith(NotEmpty.class.getPackage().getName())) {
throw new ClassNotFoundException();
} else if (name.startsWith(vaadinPackagePrefix)) {
String path = name.replace('.', '/').concat(".class");
URL resource = Thread.currentThread().getContextClassLoader()
.getResource(path);
InputStream stream;
try {
stream = resource.openStream();
byte[] bytes = IOUtils.toByteArray(stream);
return defineClass(name, bytes, 0, bytes.length);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return super.loadClass(name);
}
}
public interface UnitTest {
void execute();
}
public static class NotEmptyUnitTest implements UnitTest {
private final TextField nameField = new TextField();
@Override
public void execute() {
try {
Class.forName(NOT_EMPTY);
// The NotEmpty class must not be in the classpath
fail();
} catch (ClassNotFoundException e) {
}
BeanValidationBinder<BeanToValidate> binder = new BeanValidationBinder<>(
BeanToValidate.class);
BeanToValidate item = new BeanToValidate();
String name = "Johannes";
item.setFirstname(name);
item.setAge(32);
binder.bind(nameField, "firstname");
binder.setBean(item);
assertTrue(nameField.isRequiredIndicatorVisible());
}
}
@Test
public void notEmptyAnnotationIsNotInClasspath()
throws ClassNotFoundException, NoSuchMethodException,
SecurityException, InstantiationException, IllegalAccessException,
IllegalArgumentException, InvocationTargetException, IOException,
InterruptedException {
try (URLClassLoader loader = new TestClassLoader()) {
Class<?> clazz = loader.loadClass(NotEmptyUnitTest.class.getName());
UnitTest test = (UnitTest) clazz.newInstance();
test.execute();
}
}
}
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