diff --git a/xml/tests/src/com/intellij/codeInsight/GenerateDTDTest.java b/xml/tests/src/com/intellij/codeInsight/GenerateDTDTest.java
new file mode 100644
index 000000000000..0637e0bbdd14
--- /dev/null
+++ b/xml/tests/src/com/intellij/codeInsight/GenerateDTDTest.java
@@ -0,0 +1,35 @@
+// Copyright 2000-2022 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.intellij.codeInsight;
+
+import com.intellij.ide.DataManager;
+import com.intellij.openapi.actionSystem.ActionManager;
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.testFramework.LightPlatformCodeInsightTestCase;
+import org.jetbrains.annotations.NotNull;
+
+public class GenerateDTDTest extends LightPlatformCodeInsightTestCase {
+  @Override
+  protected @NotNull String getTestDataPath() {
+    return XmlTestUtil.getXmlTestDataPath();
+  }
+
+  public void test() {
+    String basePath = "/codeInsight/generateDTD/";
+
+    configureByFile(basePath + "before1.xml");
+    performAction();
+    checkResultByFile(basePath + "after1.xml");
+
+    configureByFile(basePath + "before2.xml");
+    performAction();
+    checkResultByFile(basePath + "after2.xml");
+  }
+
+  private void performAction() {
+    ActionManager actionManager = ActionManager.getInstance();
+    AnAction action = actionManager.getAction("GenerateDTD");
+
+    action.actionPerformed(AnActionEvent.createFromAnAction(action, null, "", DataManager.getInstance().getDataContext()));
+  }
+}
diff --git a/xml/tests/testData/codeInsight/generateDTD/after1.xml b/xml/tests/testData/codeInsight/generateDTD/after1.xml
new file mode 100644
index 000000000000..6b86f411c690
--- /dev/null
+++ b/xml/tests/testData/codeInsight/generateDTD/after1.xml
@@ -0,0 +1,10 @@
+<!DOCTYPE div [
+        <!ELEMENT div (div)*>
+        <!ATTLIST div
+                id CDATA #IMPLIED
+                ref CDATA #IMPLIED>
+        ]>
+<div>
+  <div id="a"/>
+  <div ref="a"/>
+</div>
\ No newline at end of file
diff --git a/xml/tests/testData/codeInsight/generateDTD/after2.xml b/xml/tests/testData/codeInsight/generateDTD/after2.xml
new file mode 100644
index 000000000000..58cbd7734099
--- /dev/null
+++ b/xml/tests/testData/codeInsight/generateDTD/after2.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE GOMiner [
+        <!ELEMENT GOMiner (term)*>
+        <!ELEMENT term (goid|term)*>
+        <!ATTLIST term
+                cuid CDATA #REQUIRED>
+        <!ELEMENT goid (#PCDATA)>
+        ]>
+<GOMiner>
+    <term cuid="t1234">
+        <goid>0005275</goid>
+        <term cuid="t1234">
+            <goid>0005276</goid>
+        </term>
+        <term cuid="t1234">
+            <goid>0005277</goid>
+        </term>
+        <term cuid="t1234">
+            <goid>0005329</goid>
+        </term>
+  </term>
+</GOMiner>
diff --git a/xml/tests/testData/codeInsight/generateDTD/before1.xml b/xml/tests/testData/codeInsight/generateDTD/before1.xml
new file mode 100644
index 000000000000..ffe5dd2be06b
--- /dev/null
+++ b/xml/tests/testData/codeInsight/generateDTD/before1.xml
@@ -0,0 +1,4 @@
+<div>
+  <div id="a"/>
+  <div ref="a"/>
+</div>
\ No newline at end of file
diff --git a/xml/tests/testData/codeInsight/generateDTD/before2.xml b/xml/tests/testData/codeInsight/generateDTD/before2.xml
new file mode 100644
index 000000000000..d2a767a4c2fd
--- /dev/null
+++ b/xml/tests/testData/codeInsight/generateDTD/before2.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<GOMiner>
+    <term cuid="t1234">
+        <goid>0005275</goid>
+        <term cuid="t1234">
+            <goid>0005276</goid>
+        </term>
+        <term cuid="t1234">
+            <goid>0005277</goid>
+        </term>
+        <term cuid="t1234">
+            <goid>0005329</goid>
+        </term>
+  </term>
+</GOMiner>