New J2K: add copy-paste tests for new j2k

idea/tests/org/jetbrains/kotlin/idea/conversion/copy/AbstractJavaToKotlinCopyPasteConversionTest.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.idea.conversion.copy
 
 import com.intellij.openapi.actionSystem.IdeActions
+import com.intellij.openapi.util.registry.Registry
 import org.jetbrains.kotlin.idea.AbstractCopyPasteTest
 import org.jetbrains.kotlin.idea.editor.KotlinEditorOptions
 import org.jetbrains.kotlin.idea.test.KotlinWithJdkAndRuntimeLightProjectDescriptor
@@ -22,10 +23,13 @@ abstract class AbstractJavaToKotlinCopyPasteConversionTest : AbstractCopyPasteTe
 
     override fun getTestDataPath() = BASE_PATH
 
+    protected open fun isNewJ2K(): Boolean = false
+
     override fun getProjectDescriptor() = KotlinWithJdkAndRuntimeLightProjectDescriptor.INSTANCE
 
     override fun setUp() {
         super.setUp()
+        Registry.get("kotlin.use.new.j2k").setValue(isNewJ2K())
         oldEditorOptions = KotlinEditorOptions.getInstance().state
         KotlinEditorOptions.getInstance().isEnableJavaToKotlinConversion = true
         KotlinEditorOptions.getInstance().isDonTShowConversionDialog = true