cleanPersistentContent only for tested file

platform/platform-impl/src/com/intellij/openapi/vfs/newvfs/persistent/PersistentFSImpl.java

@@ -1314,6 +1314,11 @@ public class PersistentFSImpl extends PersistentFS implements ApplicationCompone
     return FSRecords.getName(id);
   }
 
+  @TestOnly
+  public void cleanPersistedContent(int id) {
+    doCleanPersistedContent(id);
+  }
+
   @TestOnly
   public void cleanPersistedContents() {
     int[] roots = FSRecords.listRoots();
@@ -1329,10 +1334,13 @@ public class PersistentFSImpl extends PersistentFS implements ApplicationCompone
       }
     }
     else {
-      setFlag(id, MUST_RELOAD_CONTENT, true);
+      doCleanPersistedContent(id);
     }
   }
 
+  private static void doCleanPersistedContent(int id) {
+    setFlag(id, MUST_RELOAD_CONTENT, true);
+  }
 
   private static class FsRoot extends VirtualDirectoryImpl {
     private final String myName;

platform/platform-tests/testSrc/com/intellij/openapi/vfs/local/LocalFileSystemTest.java

@@ -336,7 +336,7 @@ public class LocalFileSystemTest extends BareTestFixtureTestCase {
     assertEquals(5, virtualFile.getLength());
 
     FileUtil.writeToFile(file, "new content");
-    ((PersistentFSImpl)PersistentFS.getInstance()).cleanPersistedContents();
+    ((PersistentFSImpl)PersistentFS.getInstance()).cleanPersistedContent(((VirtualFileWithId)virtualFile).getId());
     s = VfsUtilCore.loadText(virtualFile);
     assertEquals("new content", s);
     assertEquals(11, virtualFile.getLength());