SimplePropertyDescriptorTests.java

/*
 * Copyright 2002-2014 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.beans;

import java.beans.IndexedPropertyDescriptor;
import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;

import org.junit.Test;

import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;

/**
 * @author Chris Beams
 * @see ExtendedBeanInfoTests
 */
public class SimplePropertyDescriptorTests {

	@Test
	public void toStringOutput() throws IntrospectionException, SecurityException, NoSuchMethodException {
		{
			Object pd = new ExtendedBeanInfo.SimplePropertyDescriptor("foo", null, null);
			assertThat(pd.toString(), containsString(
					"PropertyDescriptor[name=foo, propertyType=null, readMethod=null"));
		}
		{
			class C {
				@SuppressWarnings("unused")
				public Object setFoo(String foo) { return null; }
			}
			Method m = C.class.getMethod("setFoo", String.class);
			Object pd = new ExtendedBeanInfo.SimplePropertyDescriptor("foo", null, m);
			assertThat(pd.toString(), allOf(
					containsString("PropertyDescriptor[name=foo"),
					containsString("propertyType=class java.lang.String"),
					containsString("readMethod=null, writeMethod=public java.lang.Object")));
		}
		{
			Object pd = new ExtendedBeanInfo.SimpleIndexedPropertyDescriptor("foo", null, null, null, null);
			assertThat(pd.toString(), containsString(
					"PropertyDescriptor[name=foo, propertyType=null, indexedPropertyType=null"));
		}
		{
			class C {
				@SuppressWarnings("unused")
				public Object setFoo(int i, String foo) { return null; }
			}
			Method m = C.class.getMethod("setFoo", int.class, String.class);
			Object pd = new ExtendedBeanInfo.SimpleIndexedPropertyDescriptor("foo", null, null, null, m);
			assertThat(pd.toString(), allOf(
					containsString("PropertyDescriptor[name=foo, propertyType=null"),
					containsString("indexedPropertyType=class java.lang.String"),
					containsString("indexedWriteMethod=public java.lang.Object")));
		}
	}

	@Test
	public void nonIndexedEquality() throws IntrospectionException, SecurityException, NoSuchMethodException {
		Object pd1 = new ExtendedBeanInfo.SimplePropertyDescriptor("foo", null, null);
		assertThat(pd1, equalTo(pd1));

		Object pd2 = new ExtendedBeanInfo.SimplePropertyDescriptor("foo", null, null);
		assertThat(pd1, equalTo(pd2));
		assertThat(pd2, equalTo(pd1));

		@SuppressWarnings("unused")
		class C {
			public Object setFoo(String foo) { return null; }
			public String getFoo() { return null; }
		}
		Method wm1 = C.class.getMethod("setFoo", String.class);
		Object pd3 = new ExtendedBeanInfo.SimplePropertyDescriptor("foo", null, wm1);
		assertThat(pd1, not(equalTo(pd3)));
		assertThat(pd3, not(equalTo(pd1)));

		Method rm1 = C.class.getMethod("getFoo");
		Object pd4 = new ExtendedBeanInfo.SimplePropertyDescriptor("foo", rm1, null);
		assertThat(pd1, not(equalTo(pd4)));
		assertThat(pd4, not(equalTo(pd1)));

		Object pd5 = new PropertyDescriptor("foo", null, null);
		assertThat(pd1, equalTo(pd5));
		assertThat(pd5, equalTo(pd1));

		Object pd6 = "not a PD";
		assertThat(pd1, not(equalTo(pd6)));
		assertThat(pd6, not(equalTo(pd1)));

		Object pd7 = null;
		assertThat(pd1, not(equalTo(pd7)));
		assertThat(pd7, not(equalTo(pd1)));
	}

	@Test
	public void indexedEquality() throws IntrospectionException, SecurityException, NoSuchMethodException {
		Object pd1 = new ExtendedBeanInfo.SimpleIndexedPropertyDescriptor("foo", null, null, null, null);
		assertThat(pd1, equalTo(pd1));

		Object pd2 = new ExtendedBeanInfo.SimpleIndexedPropertyDescriptor("foo", null, null, null, null);
		assertThat(pd1, equalTo(pd2));
		assertThat(pd2, equalTo(pd1));

		@SuppressWarnings("unused")
		class C {
			public Object setFoo(int i, String foo) { return null; }
			public String getFoo(int i) { return null; }
		}
		Method wm1 = C.class.getMethod("setFoo", int.class, String.class);
		Object pd3 = new ExtendedBeanInfo.SimpleIndexedPropertyDescriptor("foo", null, null, null, wm1);
		assertThat(pd1, not(equalTo(pd3)));
		assertThat(pd3, not(equalTo(pd1)));

		Method rm1 = C.class.getMethod("getFoo", int.class);
		Object pd4 = new ExtendedBeanInfo.SimpleIndexedPropertyDescriptor("foo", null, null, rm1, null);
		assertThat(pd1, not(equalTo(pd4)));
		assertThat(pd4, not(equalTo(pd1)));

		Object pd5 = new IndexedPropertyDescriptor("foo", null, null, null, null);
		assertThat(pd1, equalTo(pd5));
		assertThat(pd5, equalTo(pd1));

		Object pd6 = "not a PD";
		assertThat(pd1, not(equalTo(pd6)));
		assertThat(pd6, not(equalTo(pd1)));

		Object pd7 = null;
		assertThat(pd1, not(equalTo(pd7)));
		assertThat(pd7, not(equalTo(pd1)));
	}

}