MethodInvocationExpressionTest.java

/*
Copyright (c) 2009 Andr� Arnold.
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:
    Andr� Arnold - initial API and implementation
 */
package org.eclipse.xtend.backend.expr;


import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;

import junit.framework.Assert;

import org.eclipse.xtend.backend.common.ExpressionBase;
import org.eclipse.xtend.backend.testhelpers.BackendTestHelper;
import org.eclipse.xtend.backend.testhelpers.SomeTestFunctions;
import org.junit.Before;
import org.junit.Test;

public class MethodInvocationExpressionTest {

	@Before
	public void setUp() throws Exception {
	}

	@Test
	public void testMethodInvocation () {
		Class<?> cls;
		try {
			cls = Thread.currentThread().getContextClassLoader().loadClass(SomeTestFunctions.class.getName());
			Method mtd = cls.getMethod("sayHello");
			MethodInvocationExpression expr = new MethodInvocationExpression(mtd, new ArrayList<ExpressionBase>(), false, null);
			Object o = expr.evaluate (BackendTestHelper.createEmptyExecutionContext());
			Assert.assertEquals("Hello", o);
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SecurityException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	@Test
	public void testMethodInvocationWithParam () {
		Class<?> cls;
		try {
			cls = Thread.currentThread().getContextClassLoader().loadClass(SomeTestFunctions.class.getName());
			Method mtd = cls.getMethod("sayHello", String.class);
			MethodInvocationExpression expr = new MethodInvocationExpression(mtd, Arrays.asList (new LiteralExpression ("Andre", null)), false, null);
			Object o = expr.evaluate (BackendTestHelper.createEmptyExecutionContext());
			Assert.assertEquals("Hello Andre", o);
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SecurityException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	@Test
	public void testMethodInvocationWithIntParam () {
		Class<?> cls;
		try {
			cls = Thread.currentThread().getContextClassLoader().loadClass(SomeTestFunctions.class.getName());
			Method mtd = cls.getMethod("calc", Integer.TYPE);
			MethodInvocationExpression expr = new MethodInvocationExpression(mtd, Arrays.asList (new LiteralExpression (1, null)), false, null);
			Object o = expr.evaluate (BackendTestHelper.createEmptyExecutionContext());
			Assert.assertEquals(2L, o);
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SecurityException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}