tests/org.eclipse.jface.tests.databinding/src/org/eclipse/core/tests/internal/databinding/conversion/IdentityConverterTest.java

/*******************************************************************************
 * Copyright (c) 2006, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Brad Reynolds - bug 116920
 *     Matt Carter - bug 197679
 *******************************************************************************/

package org.eclipse.core.tests.internal.databinding.conversion;

import junit.framework.TestCase;

import org.eclipse.core.databinding.BindingException;
import org.eclipse.core.internal.databinding.conversion.IdentityConverter;

/**
 * @since 3.2
 * 
 */
public class IdentityConverterTest extends TestCase {

	private IdentityConverter c;

	/*
	 * (non-Javadoc)
	 * 
	 * @see junit.framework.TestCase#setUp()
	 */
	protected void setUp() throws Exception {
		c = new IdentityConverter(Integer.TYPE, Integer.TYPE);
	}

	public void testIsPrimitiveTypeMatchedWithBoxed() throws Exception {
		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Integer.class,
				Integer.TYPE));
		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Integer.TYPE,
				Integer.class));

		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Byte.class, Byte.TYPE));
		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Byte.TYPE, Byte.class));

		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Short.class, Short.TYPE));
		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Short.TYPE, Short.class));

		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Long.class, Long.TYPE));
		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Long.TYPE, Long.class));

		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Float.class, Float.TYPE));
		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Float.TYPE, Float.class));

		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Double.class, Double.TYPE));
		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Double.TYPE, Double.class));

		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Boolean.class,
				Boolean.TYPE));
		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Boolean.TYPE,
				Boolean.class));

		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Character.class,
				Character.TYPE));
		assertTrue(c.isPrimitiveTypeMatchedWithBoxed(Character.TYPE,
				Character.class));

		assertFalse(c.isPrimitiveTypeMatchedWithBoxed(Boolean.class,
				Integer.TYPE));
	}

	public void testConvert_NullToPrimitive() {
		IdentityConverter p2b = new IdentityConverter(Float.TYPE, Float.TYPE);
		try {
			p2b.convert(null);
			fail("Should have thrown an exception");
		} catch (BindingException b) {
			// success
		}
	}

	public void testConvert_PrimitiveToBoxed() throws Exception {
		IdentityConverter p2b = new IdentityConverter(Float.TYPE, Float.class);
		assertEquals("4.2", new Float(4.2), p2b.convert(new Float(4.2)));
	}

	public void testConvert_BoxedToPrimitive() throws Exception {
		IdentityConverter p2b = new IdentityConverter(Float.class, Float.TYPE);
		assertEquals("4.2", new Float(4.2), p2b.convert(new Float(4.2)));
	}

	public void testConvert_PrimitiveToPrimitive() throws Exception {
		IdentityConverter p2b = new IdentityConverter(Float.TYPE, Float.TYPE);
		assertEquals("4.2", new Float(4.2), p2b.convert(new Float(4.2)));
	}

	public void testConvert_BoxedToBoxed() throws Exception {
		IdentityConverter p2b = new IdentityConverter(Float.class, Float.class);
		assertEquals("4.2", new Float(4.2), p2b.convert(new Float(4.2)));
	}

	public static class Person {
		public String foo = "blah";
	}

	public static class Animal {
		public String name = "fido";
	}

	public void test_Convert_ValidAssignment() throws Exception {
		IdentityConverter pc = new IdentityConverter(Object.class, Person.class);
		Person orig = new Person();
		Object person = pc.convert(orig);
		assertTrue("Person class", person.getClass().equals(Person.class));
		assertTrue("Need correct Person", person.equals(orig));
	}

	public void test_Convert_ValidAssignment2() throws Exception {
		IdentityConverter pc = new IdentityConverter(Person.class, Object.class);
		Person orig = new Person();
		Object person = pc.convert(orig);
		assertTrue("Person class", person.getClass().equals(Person.class));
		assertTrue("Need correct Person", person.equals(orig));
	}

	public void testConvert_InvalidAssignment() throws Exception {
		IdentityConverter pc = new IdentityConverter(Object.class, Person.class);
		try {
			pc.convert(new Animal());
			fail("Should have gotten an exception");
		} catch (Exception e) {
			// success
		}
	}
}