Added commitAllDocuments() to avoid failing tests.

idea/src/org/jetbrains/jet/plugin/codeInsight/OverrideImplementMethodsHandler.java

@@ -25,6 +25,7 @@ import com.intellij.openapi.project.Project;
 import com.intellij.openapi.ui.DialogWrapper;
 import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.util.text.StringUtil;
+import com.intellij.psi.PsiDocumentManager;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFile;
 import com.intellij.psi.util.PsiTreeUtil;
@@ -322,6 +323,8 @@ public abstract class OverrideImplementMethodsHandler implements LanguageCodeIns
             if (selectedElements == null || selectedElements.isEmpty()) return;
         }
 
+        PsiDocumentManager.getInstance(project).commitAllDocuments();
+
         ApplicationManager.getApplication().runWriteAction(new Runnable() {
             @Override
             public void run() {