diff --git a/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/kotlin/ReadClassHeader.java b/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/kotlin/ReadClassHeader.java
deleted file mode 100644
index 451ba6fa6ca..00000000000
--- a/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/kotlin/ReadClassHeader.java
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright 2010-2014 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.jet.lang.resolve.kotlin;
-
-import com.intellij.openapi.util.Pair;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-import org.jetbrains.jet.lang.resolve.java.JvmClassName;
-import org.jetbrains.jet.lang.resolve.kotlin.header.KotlinClassHeader;
-
-public class ReadClassHeader {
-    @Nullable
-    public static KotlinClassHeader readClassHeader(@NotNull byte[] fileContents) {
-        Pair<JvmClassName, KotlinClassHeader> pair = VirtualFileKotlinClass.readClassNameAndHeader(fileContents);
-        return pair == null ? null : pair.second;
-    }
-}
diff --git a/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/kotlin/VirtualFileKotlinClass.java b/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/kotlin/VirtualFileKotlinClass.java
index 16b2edbc9e6..9c2b41c30c0 100644
--- a/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/kotlin/VirtualFileKotlinClass.java
+++ b/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/kotlin/VirtualFileKotlinClass.java
@@ -49,7 +49,7 @@ public class VirtualFileKotlinClass implements KotlinJvmBinaryClass {
     }
 
     @Nullable
-    /* package */ static Pair<JvmClassName, KotlinClassHeader> readClassNameAndHeader(@NotNull byte[] fileContents) {
+    private static Pair<JvmClassName, KotlinClassHeader> readClassNameAndHeader(@NotNull byte[] fileContents) {
         final ReadKotlinClassHeaderAnnotationVisitor readHeaderVisitor = new ReadKotlinClassHeaderAnnotationVisitor();
         final Ref<JvmClassName> classNameRef = Ref.create();
         new ClassReader(fileContents).accept(new ClassVisitor(ASM4) {
@@ -95,6 +95,12 @@ public class VirtualFileKotlinClass implements KotlinJvmBinaryClass {
         }
     }
 
+    @Nullable
+    public static KotlinClassHeader readClassHeader(@NotNull byte[] fileContents) {
+        Pair<JvmClassName, KotlinClassHeader> pair = readClassNameAndHeader(fileContents);
+        return pair == null ? null : pair.second;
+    }
+
     @NotNull
     public VirtualFile getFile() {
         return file;
diff --git a/jps-plugin/jps-plugin.iml b/jps-plugin/jps-plugin.iml
index 37590a836e4..1b4d326d32d 100644
--- a/jps-plugin/jps-plugin.iml
+++ b/jps-plugin/jps-plugin.iml
@@ -16,6 +16,10 @@
     <orderEntry type="library" scope="TEST" name="idea-full" level="project" />
     <orderEntry type="module" module-name="backend" scope="TEST" />
     <orderEntry type="module" module-name="descriptors" scope="TEST" />
+    <orderEntry type="module" module-name="frontend.java" scope="TEST" />
+    <orderEntry type="module" module-name="descriptor.loader.java" scope="TEST" />
+    <orderEntry type="module" module-name="serialization.java" scope="TEST" />
+    <orderEntry type="module" module-name="serialization" scope="TEST" />
     <orderEntry type="module" module-name="compiler-tests" scope="TEST" />
   </component>
 </module>
diff --git a/jps-plugin/test/org/jetbrains/jet/jps/build/classFilesComparison.kt b/jps-plugin/test/org/jetbrains/jet/jps/build/classFilesComparison.kt
index 8cd431c2296..6af1c8a34d2 100644
--- a/jps-plugin/test/org/jetbrains/jet/jps/build/classFilesComparison.kt
+++ b/jps-plugin/test/org/jetbrains/jet/jps/build/classFilesComparison.kt
@@ -28,10 +28,6 @@ import com.google.common.hash.Hashing
 import com.intellij.openapi.util.io.FileUtil
 import com.google.common.collect.Sets
 import java.util.HashSet
-import com.intellij.openapi.vfs.local.CoreLocalFileSystem
-import org.jetbrains.jet.lang.resolve.kotlin.VirtualFileKotlinClass
-import org.jetbrains.jet.storage.LockBasedStorageManager
-import org.jetbrains.jet.lang.resolve.kotlin.header.ReadKotlinClassHeaderAnnotationVisitor
 import org.jetbrains.jet.lang.resolve.kotlin.header.KotlinClassHeader
 import org.jetbrains.jet.descriptors.serialization.BitEncoding
 import org.jetbrains.jet.descriptors.serialization.DebugJavaProtoBuf
@@ -39,6 +35,7 @@ import com.google.protobuf.ExtensionRegistry
 import java.io.ByteArrayInputStream
 import org.jetbrains.jet.descriptors.serialization.DebugProtoBuf
 import java.util.Arrays
+import org.jetbrains.jet.lang.resolve.kotlin.VirtualFileKotlinClass
 
 fun File.hash() = Files.hash(this, Hashing.crc32())
 
@@ -114,13 +111,42 @@ fun assertEqualDirectories(expected: File, actual: File, ignore: (File) -> Boole
 
 fun classFileToString(classFile: File): String {
     val out = StringWriter()
-    val traceVisitor = TraceClassVisitor(PrintWriter(out))
-    ClassReader(classFile.readBytes()).accept(traceVisitor, 0)
 
-    // TODO serialize protobuf
+    val classBytes = classFile.readBytes()
+
+    val traceVisitor = TraceClassVisitor(PrintWriter(out))
+    ClassReader(classBytes).accept(traceVisitor, 0)
+
+    val classHeader = VirtualFileKotlinClass.readClassHeader(classBytes)
+
+    val annotationDataEncoded = classHeader?.annotationData
+    if (annotationDataEncoded != null) {
+        ByteArrayInputStream(BitEncoding.decodeBytes(annotationDataEncoded)).use {
+            input ->
+
+        out.write("\n------ simpleNames proto -----\n${DebugProtoBuf.SimpleNameTable.parseDelimitedFrom(input)}")
+        out.write("\n------ qualifiedNames proto -----\n${DebugProtoBuf.QualifiedNameTable.parseDelimitedFrom(input)}")
+
+        when (classHeader!!.kind) {
+            KotlinClassHeader.Kind.PACKAGE_FACADE ->
+                out.write("\n------ package proto -----\n${DebugProtoBuf.Package.parseFrom(input, getExtensionRegistry())}")
+
+                KotlinClassHeader.Kind.CLASS ->
+                    out.write("\n------ class proto -----\n${DebugProtoBuf.Class.parseFrom(input, getExtensionRegistry())}")
+                else -> throw IllegalStateException()
+            }
+        }
+    }
+
     return out.toString()
 }
 
+fun getExtensionRegistry(): ExtensionRegistry {
+    val registry = ExtensionRegistry.newInstance()!!
+    DebugJavaProtoBuf.registerAllExtensions(registry)
+    return registry
+}
+
 fun fileToStringRepresentation(file: File): String {
     return when {
         file.name.endsWith(".class") -> {