TestInnerClasses.java

/*******************************************************************************
 * Copyright (c) 2015 Jeff Martin.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public
 * License v3.0 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 *
 * Contributors:
 * Jeff Martin - initial API and implementation
 ******************************************************************************/
package cuchaz.enigma;

import static cuchaz.enigma.TestEntryFactory.newClass;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.hamcrest.Matchers.empty;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.nullValue;

import java.util.jar.JarFile;

import org.junit.Test;

import cuchaz.enigma.analysis.JarIndex;
import cuchaz.enigma.mapping.ClassEntry;

public class TestInnerClasses
{
	
	private JarIndex m_index;
	private Deobfuscator m_deobfuscator;
	
	private static final ClassEntry AnonymousOuter = newClass("none/a");
	private static final ClassEntry AnonymousInner = newClass("none/a$1");
	private static final ClassEntry SimpleOuter = newClass("none/d");
	private static final ClassEntry SimpleInner = newClass("none/d$a");
	private static final ClassEntry ConstructorArgsOuter = newClass("none/c");
	private static final ClassEntry ConstructorArgsInner = newClass("none/c$a");
	private static final ClassEntry AnonymousWithScopeArgsOuter =
		newClass("none/b");
	private static final ClassEntry AnonymousWithScopeArgsInner =
		newClass("none/b$1");
	private static final ClassEntry AnonymousWithOuterAccessOuter =
		newClass("none/e");
	private static final ClassEntry AnonymousWithOuterAccessInner =
		newClass("none/e$1");
	private static final ClassEntry ClassTreeRoot = newClass("none/f");
	private static final ClassEntry ClassTreeLevel1 = newClass("none/f$a");
	private static final ClassEntry ClassTreeLevel2 = newClass("none/f$a$a");
	private static final ClassEntry ClassTreeLevel3 = newClass("none/f$a$a$a");
	
	public TestInnerClasses() throws Exception
	{
		m_index = new JarIndex();
		JarFile jar = new JarFile("build/testInnerClasses.obf.jar");
		m_index.indexJar(jar, true);
		m_deobfuscator = new Deobfuscator(jar);
	}
	
	@Test
	public void simple()
	{
		assertThat(m_index.getOuterClass(SimpleInner), is(SimpleOuter));
		assertThat(m_index.getInnerClasses(SimpleOuter),
			containsInAnyOrder(SimpleInner));
		assertThat(m_index.isAnonymousClass(SimpleInner), is(false));
		decompile(SimpleOuter);
	}
	
	@Test
	public void anonymous()
	{
		assertThat(m_index.getOuterClass(AnonymousInner), is(AnonymousOuter));
		assertThat(m_index.getInnerClasses(AnonymousOuter),
			containsInAnyOrder(AnonymousInner));
		assertThat(m_index.isAnonymousClass(AnonymousInner), is(true));
		decompile(AnonymousOuter);
	}
	
	@Test
	public void constructorArgs()
	{
		assertThat(m_index.getOuterClass(ConstructorArgsInner),
			is(ConstructorArgsOuter));
		assertThat(m_index.getInnerClasses(ConstructorArgsOuter),
			containsInAnyOrder(ConstructorArgsInner));
		assertThat(m_index.isAnonymousClass(ConstructorArgsInner), is(false));
		decompile(ConstructorArgsOuter);
	}
	
	@Test
	public void anonymousWithScopeArgs()
	{
		assertThat(m_index.getOuterClass(AnonymousWithScopeArgsInner),
			is(AnonymousWithScopeArgsOuter));
		assertThat(m_index.getInnerClasses(AnonymousWithScopeArgsOuter),
			containsInAnyOrder(AnonymousWithScopeArgsInner));
		assertThat(m_index.isAnonymousClass(AnonymousWithScopeArgsInner),
			is(true));
		decompile(AnonymousWithScopeArgsOuter);
	}
	
	@Test
	public void anonymousWithOuterAccess()
	{
		assertThat(m_index.getOuterClass(AnonymousWithOuterAccessInner),
			is(AnonymousWithOuterAccessOuter));
		assertThat(m_index.getInnerClasses(AnonymousWithOuterAccessOuter),
			containsInAnyOrder(AnonymousWithOuterAccessInner));
		assertThat(m_index.isAnonymousClass(AnonymousWithOuterAccessInner),
			is(true));
		decompile(AnonymousWithOuterAccessOuter);
	}
	
	@Test
	public void classTree()
	{
		
		// root level
		assertThat(m_index.containsObfClass(ClassTreeRoot), is(true));
		assertThat(m_index.getOuterClass(ClassTreeRoot), is(nullValue()));
		assertThat(m_index.getInnerClasses(ClassTreeRoot),
			containsInAnyOrder(ClassTreeLevel1));
		
		// level 1
		ClassEntry fullClassEntry =
			new ClassEntry(ClassTreeRoot.getName() + "$"
				+ ClassTreeLevel1.getInnermostClassName());
		assertThat(m_index.containsObfClass(fullClassEntry), is(true));
		assertThat(m_index.getOuterClass(ClassTreeLevel1), is(ClassTreeRoot));
		assertThat(m_index.getInnerClasses(ClassTreeLevel1),
			containsInAnyOrder(ClassTreeLevel2));
		
		// level 2
		fullClassEntry =
			new ClassEntry(ClassTreeRoot.getName() + "$"
				+ ClassTreeLevel1.getInnermostClassName() + "$"
				+ ClassTreeLevel2.getInnermostClassName());
		assertThat(m_index.containsObfClass(fullClassEntry), is(true));
		assertThat(m_index.getOuterClass(ClassTreeLevel2), is(ClassTreeLevel1));
		assertThat(m_index.getInnerClasses(ClassTreeLevel2),
			containsInAnyOrder(ClassTreeLevel3));
		
		// level 3
		fullClassEntry =
			new ClassEntry(ClassTreeRoot.getName() + "$"
				+ ClassTreeLevel1.getInnermostClassName() + "$"
				+ ClassTreeLevel2.getInnermostClassName() + "$"
				+ ClassTreeLevel3.getInnermostClassName());
		assertThat(m_index.containsObfClass(fullClassEntry), is(true));
		assertThat(m_index.getOuterClass(ClassTreeLevel3), is(ClassTreeLevel2));
		assertThat(m_index.getInnerClasses(ClassTreeLevel3), is(empty()));
	}
	
	private void decompile(ClassEntry classEntry)
	{
		m_deobfuscator.getSourceTree(classEntry.getName());
	}
}