diff --git a/platform/testFramework/src/com/intellij/testFramework/fixtures/impl/CodeInsightTestFixtureImpl.java b/platform/testFramework/src/com/intellij/testFramework/fixtures/impl/CodeInsightTestFixtureImpl.java
index 6b63a6729741..20255042c82d 100644
--- a/platform/testFramework/src/com/intellij/testFramework/fixtures/impl/CodeInsightTestFixtureImpl.java
+++ b/platform/testFramework/src/com/intellij/testFramework/fixtures/impl/CodeInsightTestFixtureImpl.java
@@ -1874,8 +1874,9 @@ public class CodeInsightTestFixtureImpl extends BaseFixture implements CodeInsig
     // overrides "getElementToMakeWritable" or has the following line:
     // if (!FileModificationService.getInstance().prepareFileForWrite(file)) return;
 
-    ReadonlyStatusHandlerImpl handler = (ReadonlyStatusHandlerImpl)ReadonlyStatusHandler.getInstance(file.getProject());
-    VirtualFile vFile = InjectedLanguageUtil.getTopLevelFile(file).getVirtualFile();
+    Project project = file.getProject();
+    ReadonlyStatusHandlerImpl handler = (ReadonlyStatusHandlerImpl)ReadonlyStatusHandler.getInstance(project);
+    VirtualFile vFile = Objects.requireNonNull(InjectedLanguageUtil.getTopLevelFile(file)).getVirtualFile();
     setReadOnly(vFile, true);
     handler.setClearReadOnlyInTests(true);
     AtomicBoolean result = new AtomicBoolean();
@@ -1883,6 +1884,7 @@ public class CodeInsightTestFixtureImpl extends BaseFixture implements CodeInsig
       ApplicationManager.getApplication().invokeLater(
         () -> result.set(ShowIntentionActionsHandler.chooseActionAndInvoke(file, editor, action, actionText)));
       UIUtil.dispatchAllInvocationEvents();
+      checkPsiTextConsistency(project, vFile);
     }
     catch (AssertionError e) {
       ExceptionUtil.rethrowUnchecked(ExceptionUtil.getRootCause(e));
@@ -1895,6 +1897,13 @@ public class CodeInsightTestFixtureImpl extends BaseFixture implements CodeInsig
     return result.get();
   }
 
+  private static void checkPsiTextConsistency(Project project, VirtualFile vFile) {
+    PsiFile topLevelPsi = vFile.isValid() ? PsiManager.getInstance(project).findFile(vFile) : null;
+    if (topLevelPsi != null) {
+      PsiTestUtil.checkStubsMatchText(topLevelPsi);
+    }
+  }
+
   private static void setReadOnly(VirtualFile vFile, boolean readOnlyStatus) {
     try {
       WriteAction.run(() -> ReadOnlyAttributeUtil.setReadOnlyAttribute(vFile, readOnlyStatus));