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package org.jf.dexlib2.analysis.util;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import junit.framework.Assert;
import org.jf.dexlib2.Opcodes;
import org.jf.dexlib2.analysis.ClassPath;
import org.jf.dexlib2.analysis.DexClassProvider;
import org.jf.dexlib2.analysis.TestUtils;
import org.jf.dexlib2.analysis.TypeProto;
import org.jf.dexlib2.iface.ClassDef;
import org.jf.dexlib2.immutable.ImmutableDexFile;
import org.junit.Test;

import java.io.IOException;

public class SuperclassChainTest {

    @Test
    public void testGetSuperclassChain() throws IOException {
        ClassDef objectClassDef = TestUtils.makeClassDef("Ljava/lang/Object;", null);
        ClassDef oneClassDef = TestUtils.makeClassDef("Ltest/one;", "Ljava/lang/Object;");
        ClassDef twoClassDef = TestUtils.makeClassDef("Ltest/two;", "Ltest/one;");
        ClassDef threeClassDef = TestUtils.makeClassDef("Ltest/three;", "Ltest/two;");

        ImmutableSet<ClassDef> classes = ImmutableSet.<ClassDef>of(
                objectClassDef, oneClassDef, twoClassDef, threeClassDef);

        ClassPath classPath = new ClassPath(new DexClassProvider(new ImmutableDexFile(Opcodes.getDefault(), classes)));

        TypeProto objectClassProto = classPath.getClass("Ljava/lang/Object;");
        TypeProto oneClassProto = classPath.getClass("Ltest/one;");
        TypeProto twoClassProto = classPath.getClass("Ltest/two;");
        TypeProto threeClassProto = classPath.getClass("Ltest/three;");

        Assert.assertEquals(
                ImmutableList.<TypeProto>of(),
                ImmutableList.copyOf(TypeProtoUtils.getSuperclassChain(objectClassProto)));

        Assert.assertEquals(
                ImmutableList.<TypeProto>of(objectClassProto),
                ImmutableList.copyOf(TypeProtoUtils.getSuperclassChain(oneClassProto)));

        Assert.assertEquals(
                ImmutableList.<TypeProto>of(oneClassProto, objectClassProto),
                ImmutableList.copyOf(TypeProtoUtils.getSuperclassChain(twoClassProto)));

        Assert.assertEquals(
                ImmutableList.<TypeProto>of(twoClassProto, oneClassProto, objectClassProto),
                ImmutableList.copyOf(TypeProtoUtils.getSuperclassChain(threeClassProto)));
    }

    @Test
    public void testGetSuperclassChain_Unresolved() throws IOException {
        // Ltest/one; isn't defined

        ClassDef twoClassDef = TestUtils.makeClassDef("Ltest/two;", "Ltest/one;");
        ClassDef threeClassDef = TestUtils.makeClassDef("Ltest/three;", "Ltest/two;");
        ImmutableSet<ClassDef> classes = ImmutableSet.<ClassDef>of(twoClassDef, threeClassDef);
        ClassPath classPath = new ClassPath(new DexClassProvider(new ImmutableDexFile(Opcodes.getDefault(), classes)));

        TypeProto unknownClassProto = classPath.getUnknownClass();
        TypeProto oneClassProto = classPath.getClass("Ltest/one;");
        TypeProto twoClassProto = classPath.getClass("Ltest/two;");
        TypeProto threeClassProto = classPath.getClass("Ltest/three;");

        Assert.assertEquals(
                ImmutableList.<TypeProto>of(oneClassProto, unknownClassProto),
                ImmutableList.copyOf(TypeProtoUtils.getSuperclassChain(twoClassProto)));

        Assert.assertEquals(
                ImmutableList.<TypeProto>of(twoClassProto, oneClassProto, unknownClassProto),
                ImmutableList.copyOf(TypeProtoUtils.getSuperclassChain(threeClassProto)));
    }
}