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// Tags: JDK1.2
// Uses: getBeanInfoTestClass
//Copyright (C) 2004 Robert Schuster <theBohemian@gmx.net>
//Mauve is free software; you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation; either version 2, or (at your option)
//any later version.
//Mauve is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//GNU General Public License for more details.
//You should have received a copy of the GNU General Public License
//along with Mauve; see the file COPYING. If not, write to
//the Free Software Foundation, 59 Temple Place - Suite 330,
//Boston, MA 02111-1307, USA. */
package gnu.testlet.java.beans.Introspector;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
/** This tests the property retrieving mechanism of the
* Introspector class.
*
* <p>See {@link getBeanInfoTestClass} for details on what is
* expected.</p>
*
* <p>The property test goes like this:</p>
* <p>There is a test class having a number of well-known methods. Some of them should
* make a property other should not. At first <code>Method</code> instances for
* the properties are retrieved using reflection. Then the <code>BeanInfo</code>
* instance of the test class is retrieved. Finally the test checks whether the
* <code>BeanInfo</code> contains the right <code>PropertyDescription</code>
* by testing their read and write methods against the methods that were retrieved
* in the beginning.</p>
*
* @author Robert Schuster <theBohemian@gmx.net>
*/
public class getBeanInfo implements Testlet
{
public void test(TestHarness harness) {
propertyTest(harness);
}
void propertyTest(TestHarness harness)
{
BeanInfo bi = null;
Class testClass = getBeanInfoTestClass.class;
Method readWritePropertyReadMethod = null;
Method readWritePropertyWriteMethod = null;
Method readOnlyPropertyReadMethod = null;
Method writeOnlyPropertyWriteMethod = null;
try
{
readWritePropertyReadMethod =
testClass.getMethod("getCorrectProperty", new Class[0]);
readWritePropertyWriteMethod =
testClass.getMethod(
"setCorrectProperty",
new Class[] { Integer.TYPE });
readOnlyPropertyReadMethod =
testClass.getMethod("getCorrectReadOnlyProperty", new Class[0]);
writeOnlyPropertyWriteMethod =
testClass.getMethod(
"setCorrectWriteOnlyProperty",
new Class[] { Integer.TYPE });
}
catch (NoSuchMethodException nsme)
{
// if that happens check the test class (compiler?)
harness.fail("TEST_PREPARATION_NOSUCHMETHODEXCEPTION");
}
// checks availability of the instances. If any of these is null a NoSuchMethodException could have caused this
harness.check(
readWritePropertyReadMethod != null,
"TEST_PREPARATION_METHOD_INSTANCE_1");
harness.check(
readWritePropertyWriteMethod != null,
"TEST_PREPARATION_METHOD_INSTANCE_2");
harness.check(
readOnlyPropertyReadMethod != null,
"TEST_PREPARATION_METHOD_INSTANCE_3");
harness.check(
writeOnlyPropertyWriteMethod != null,
"TEST_PREPARATION_METHOD_INSTANCE_4");
try
{
// introspects only the test class (we are not interested in the Object.getClass() method)
bi = Introspector.getBeanInfo(testClass, Object.class);
}
catch (IntrospectionException ie)
{
harness.fail("TEST_PREPARATION_INTROSPECTION_EXCEPTION");
}
harness.check(bi != null, "TEST_PREPARATION_VALID_BEANINFO");
PropertyDescriptor[] propertyDescriptors = bi.getPropertyDescriptors();
// expects 3 properties: read-write, read-only and write-only
harness.check(
propertyDescriptors.length,
3,
"PROPERTY_DESCRIPTORS_ARRAY: expected 3 entries");
// boolean flagging whether we reached a certain property
boolean readWritePresent = false;
// boolean flagging whether we reached a certain property
boolean readOnlyPresent = false;
// boolean flagging whether we reached a certain property
boolean writeOnlyPresent = false;
for (int i = 0; i < 3; i++)
{
String name = propertyDescriptors[i].getName();
if (name.equals("correctProperty"))
{
harness.check(readWritePresent, false, "READ_WRITE_PRESENT1");
readWritePresent = true;
harness.check(
propertyDescriptors[i].getReadMethod(),
readWritePropertyReadMethod,
"READ_WRITE_READ_METHOD");
harness.check(
propertyDescriptors[i].getWriteMethod(),
readWritePropertyWriteMethod,
"READ_WRITE_WRITE_METHOD");
}
else if (name.equals("correctReadOnlyProperty"))
{
harness.check(readOnlyPresent, false, "READ_ONLY_PRESENT1");
readOnlyPresent = true;
harness.check(
propertyDescriptors[i].getReadMethod(),
readOnlyPropertyReadMethod,
"READ_ONLY_READ_METHOD");
harness.check(
propertyDescriptors[i].getWriteMethod(),
null,
"READ_ONLY_WRITE_METHOD");
}
else if (name.equals("correctWriteOnlyProperty"))
{
harness.check(writeOnlyPresent, false, "WRITE_ONLY_PRESENT1");
writeOnlyPresent = true;
harness.check(
propertyDescriptors[i].getReadMethod(),
null,
"WRITE_ONLY_READ_METHOD");
harness.check(
propertyDescriptors[i].getWriteMethod(),
writeOnlyPropertyWriteMethod,
"WRITE_ONLY_WRITE_METHOD");
}
}
// after all methods have been checked we expect having reached all properties
harness.check(readWritePresent, "READ_WRITE_PRESENT2");
harness.check(readOnlyPresent, "READ_ONLY_PRESENT2");
harness.check(writeOnlyPresent, "WRITE_ONLY_PRESENT2");
}
}
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