diff --git a/java/java-tests/testSrc/com/intellij/psi/StubAstSwitchTest.groovy b/java/java-tests/testSrc/com/intellij/psi/StubAstSwitchTest.groovy
new file mode 100644
index 000000000000..560a84eab156
--- /dev/null
+++ b/java/java-tests/testSrc/com/intellij/psi/StubAstSwitchTest.groovy
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2000-2012 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 com.intellij.psi
+
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.psi.impl.source.PsiFileImpl
+import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase
+
+/**
+ * @author peter
+ */
+class StubAstSwitchTest extends LightCodeInsightFixtureTestCase {
+
+  public void "test modifying file with stubs via VFS"() {
+    PsiFileImpl file = (PsiFileImpl)myFixture.addFileToProject('Foo.java', 'class Foo {}')
+    assert file.stub
+    def cls = ((PsiJavaFile)file).classes[0]
+    assert file.stub
+
+    ApplicationManager.application.runWriteAction { file.virtualFile.setBinaryContent(file.virtualFile.contentsToByteArray()) }
+    assert file.stub
+
+    //assert cls == PsiTreeUtil.findElementOfClassAtOffset(file, 1, PsiClass, false)
+    //assert !file.stub
+
+  }
+}