/*
* Copyright 2002-2006 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.springframework.core;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.Arrays;
import junit.framework.TestCase;
import org.springframework.beans.TestBean;
public class PrioritizedParameterNameDiscovererTests extends TestCase {
private static final String[] FOO_BAR = new String[] { "foo", "bar" };
private static final String[] SOMETHING_ELSE = new String[] { "something", "else" };
ParameterNameDiscoverer returnsFooBar = new ParameterNameDiscoverer() {
public String[] getParameterNames(Method m) {
return FOO_BAR;
}
public String[] getParameterNames(Constructor ctor) {
return FOO_BAR;
}
};
ParameterNameDiscoverer returnsSomethingElse = new ParameterNameDiscoverer() {
public String[] getParameterNames(Method m) {
return SOMETHING_ELSE;
}
public String[] getParameterNames(Constructor ctor) {
return SOMETHING_ELSE;
}
};
private final Method anyMethod;
private final Class anyClass = Object.class;
public PrioritizedParameterNameDiscovererTests() throws SecurityException, NoSuchMethodException {
anyMethod = TestBean.class.getMethod("getAge", (Class[]) null);
}
public void testNoParametersDiscoverers() {
ParameterNameDiscoverer pnd = new PrioritizedParameterNameDiscoverer();
assertNull(pnd.getParameterNames(anyMethod));
assertNull(pnd.getParameterNames((Constructor) null));
}
public void testOrderedParameterDiscoverers1() {
PrioritizedParameterNameDiscoverer pnd = new PrioritizedParameterNameDiscoverer();
pnd.addDiscoverer(returnsFooBar);
assertTrue(Arrays.equals(FOO_BAR, pnd.getParameterNames(anyMethod)));
assertTrue(Arrays.equals(FOO_BAR, pnd.getParameterNames((Constructor) null)));
pnd.addDiscoverer(returnsSomethingElse);
assertTrue(Arrays.equals(FOO_BAR, pnd.getParameterNames(anyMethod)));
assertTrue(Arrays.equals(FOO_BAR, pnd.getParameterNames((Constructor) null)));
}
public void testOrderedParameterDiscoverers2() {
PrioritizedParameterNameDiscoverer pnd = new PrioritizedParameterNameDiscoverer();
pnd.addDiscoverer(returnsSomethingElse);
assertTrue(Arrays.equals(SOMETHING_ELSE, pnd.getParameterNames(anyMethod)));
assertTrue(Arrays.equals(SOMETHING_ELSE, pnd.getParameterNames((Constructor) null)));
pnd.addDiscoverer(returnsFooBar);
assertTrue(Arrays.equals(SOMETHING_ELSE, pnd.getParameterNames(anyMethod)));
assertTrue(Arrays.equals(SOMETHING_ELSE, pnd.getParameterNames((Constructor) null)));
}
}