Emulate debugging after dexing for stepping tests with 'dex' prefix (KT-12896)

Remove SourceDebugExtension attribute from resulting class files

 #KT-12896 In Progress

idea/tests/org/jetbrains/kotlin/idea/debugger/KotlinDebuggerTestCase.java

@@ -60,14 +60,14 @@ import java.util.Collection;
 import java.util.List;
 
 public abstract class KotlinDebuggerTestCase extends DescriptorTestCase {
-    protected static final String TINY_APP = PluginTestCaseBase.getTestDataPathBase() + "/debugger/tinyApp";
+    private static final String TINY_APP = PluginTestCaseBase.getTestDataPathBase() + "/debugger/tinyApp";
     private static boolean IS_TINY_APP_COMPILED = false;
 
     private static File CUSTOM_LIBRARY_JAR;
     private static final File CUSTOM_LIBRARY_SOURCES = new File(PluginTestCaseBase.getTestDataPathBase() + "/debugger/customLibraryForTinyApp");
 
     protected static final String KOTLIN_LIBRARY_NAME = "KotlinLibrary";
-    protected static final String CUSTOM_LIBRARY_NAME = "CustomLibrary";
+    private static final String CUSTOM_LIBRARY_NAME = "CustomLibrary";
 
     @Override
     protected OutputChecker initOutputChecker() {
@@ -138,6 +138,8 @@ public abstract class KotlinDebuggerTestCase extends DescriptorTestCase {
                 throw new RuntimeException(e);
             }
 
+            DexLikeBytecodePatchKt.patchDexTests(outDir);
+
             IS_TINY_APP_COMPILED = true;
         }
 

idea/tests/org/jetbrains/kotlin/idea/debugger/dexLikeBytecodePatch.kt

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2010-2016 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.kotlin.idea.debugger
+
+import org.jetbrains.org.objectweb.asm.ClassReader
+import org.jetbrains.org.objectweb.asm.ClassVisitor
+import org.jetbrains.org.objectweb.asm.ClassWriter
+import org.jetbrains.org.objectweb.asm.Opcodes
+import java.io.File
+
+fun patchDexTests(dir: File) {
+    dir.listFiles({ file -> file.isDirectory && file.name.startsWith("dex") }).forEach { dir ->
+        dir.listFiles { testOutputFile -> testOutputFile.extension == "class" }.forEach { classFile ->
+            applyDexLikePatch(classFile)
+        }
+    }
+}
+
+private fun applyDexLikePatch(file: File) {
+    file.copyTo(File(file.absolutePath + ".temp"))
+
+    val reader = ClassReader(file.readBytes())
+    val writer = ClassWriter(ClassWriter.COMPUTE_FRAMES)
+
+    val visitor = writer
+            .withRemoveSourceDebugExtensionVisitor()
+
+    reader.accept(visitor, 0)
+
+    file.writeBytes(writer.toByteArray())
+}
+
+private fun ClassVisitor.withRemoveSourceDebugExtensionVisitor(): ClassVisitor {
+    return object : ClassVisitor(Opcodes.ASM5, this) {
+        override fun visitSource(source: String?, debug: String?) {
+            super.visitSource(source, null)
+        }
+    }
+}