From f230a5af471c73b457ead37e23e05882617cdaeb Mon Sep 17 00:00:00 2001
From: Daniel Rosenwasser <DanielRosenwasser@users.noreply.github.com>
Date: Wed, 12 Jan 2022 01:07:04 +0000
Subject: [PATCH] Add failing test.

---
 .../navbarForDoubleAmbientModules01.ts        | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 tests/cases/fourslash/navbarForDoubleAmbientModules01.ts

diff --git a/tests/cases/fourslash/navbarForDoubleAmbientModules01.ts b/tests/cases/fourslash/navbarForDoubleAmbientModules01.ts
new file mode 100644
index 00000000000..2841f3e548d
--- /dev/null
+++ b/tests/cases/fourslash/navbarForDoubleAmbientModules01.ts
@@ -0,0 +1,24 @@
+/// <reference path="./fourslash.ts" />
+
+//// declare module "foo";  
+//// declare module "foo";
+
+verify.navigationBar([
+    {
+        "text": "<global>",
+        "kind": "script",
+        "childItems": [
+            {
+                "text": "\"foo\"",
+                "kind": "module",
+                "kindModifiers": "declare"
+            }
+        ]
+    },
+    {
+        "text": "\"foo\"",
+        "kind": "module",
+        "kindModifiers": "declare",
+        "indent": 1
+    }
+]);
\ No newline at end of file