| /* |
| * Copyright (C) 2007-2010 JĂșlio Vilmar Gesser. |
| * Copyright (C) 2011, 2013-2016 The JavaParser Team. |
| * |
| * This file is part of JavaParser. |
| * |
| * JavaParser can be used either under the terms of |
| * a) the GNU Lesser General Public License as published by |
| * the Free Software Foundation, either version 3 of the License, or |
| * (at your option) any later version. |
| * b) the terms of the Apache License |
| * |
| * You should have received a copy of both licenses in LICENCE.LGPL and |
| * LICENCE.APACHE. Please refer to those files for details. |
| * |
| * JavaParser 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 Lesser General Public License for more details. |
| */ |
| |
| package com.github.javaparser.ast.observer; |
| |
| import com.github.javaparser.JavaParser; |
| import com.github.javaparser.ast.CompilationUnit; |
| import com.github.javaparser.ast.Node; |
| import com.github.javaparser.ast.body.FieldDeclaration; |
| import org.junit.Test; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| public class PropagatingAstObserverTest { |
| @Test |
| public void verifyPropagation() { |
| String code = "class A { }"; |
| CompilationUnit cu = JavaParser.parse(code); |
| List<String> changes = new ArrayList<>(); |
| AstObserver observer = new PropagatingAstObserver() { |
| @Override |
| public void concretePropertyChange(Node observedNode, ObservableProperty property, Object oldValue, Object newValue) { |
| changes.add(String.format("%s.%s changed from %s to %s", observedNode.getClass().getSimpleName(), property.name().toLowerCase(), oldValue, newValue)); |
| } |
| }; |
| cu.registerForSubtree(observer); |
| |
| assertEquals(Arrays.asList(), changes); |
| |
| FieldDeclaration fieldDeclaration = cu.getClassByName("A").get().addField("String", "foo"); |
| assertEquals(Arrays.asList(), changes); |
| assertEquals(true, fieldDeclaration.isRegistered(observer)); |
| |
| cu.getClassByName("A").get().getFieldByName("foo").get().getVariables().get(0).setName("Bar"); |
| assertEquals(Arrays.asList("VariableDeclarator.name changed from foo to Bar"), changes); |
| } |
| } |