diff --git a/packages/devtools-ui/tests/deep-keys.ts b/packages/devtools-ui/tests/deep-keys.ts
new file mode 100644
index 00000000..986cf3e7
--- /dev/null
+++ b/packages/devtools-ui/tests/deep-keys.ts
@@ -0,0 +1,67 @@
+import type { CollapsiblePaths } from '../src/utils/deep-keys'
+
+type WithDeeplyNestedObject = {
+  a: {
+    b: {
+      c: {
+        d: {
+          e: {
+            f: {
+              g: {
+                h: {
+                  i: {
+                    j: number
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+
+type _DeeplyNestedObject = CollapsiblePaths<WithDeeplyNestedObject>
+
+type WithAny = {
+  errors?: any
+}
+
+type _Any = CollapsiblePaths<WithAny>
+
+type ArrayRecursion = { arr: Array<Array<Array<Array<[]>>>> }
+
+type _ArrayRecursion = CollapsiblePaths<ArrayRecursion>
+
+type WithUndefined = {
+  status?: {
+    valid: boolean
+    error?: {
+      message: string
+    }
+  }
+}
+
+type _WithUndefined = CollapsiblePaths<WithUndefined>
+
+type WithUnknown = {
+  payload: unknown
+}
+
+type _WithUnknown = CollapsiblePaths<WithUnknown>
+
+type WithRealisticState = {
+  canSubmit?: boolean
+  isSubmitting?: boolean
+  errors?: Array<any>
+  errorMap?: Record<string, any>
+}
+
+type _WithRealisticState = CollapsiblePaths<WithRealisticState>
+
+type WithGeneric<TData> = {
+  generic: TData
+}
+
+type _WithGeneric = CollapsiblePaths<WithGeneric<{ a: { b: string } }>>