From 6320bb39ac30207a27553687864005085a452781 Mon Sep 17 00:00:00 2001
From: Ronen Amiel <ronen.amiel@gmail.com>
Date: Thu, 6 Feb 2025 17:57:08 +0200
Subject: [PATCH] add missing test for casting enums for
 no-unnecessary-type-assertion

---
 .../no-unnecessary-type-assertion.test.ts     | 82 +++++++++++++++++++
 1 file changed, 82 insertions(+)

diff --git a/packages/eslint-plugin/tests/rules/no-unnecessary-type-assertion.test.ts b/packages/eslint-plugin/tests/rules/no-unnecessary-type-assertion.test.ts
index a686238bad95..1ef1a3dfb371 100644
--- a/packages/eslint-plugin/tests/rules/no-unnecessary-type-assertion.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-unnecessary-type-assertion.test.ts
@@ -384,6 +384,38 @@ if (Math.random()) {
 x!;
       `,
     },
+    {
+      code: `
+enum T {
+  Value1,
+  Value2,
+}
+
+declare const a: T.Value1;
+const b = a as T.Value2;
+      `,
+    },
+    {
+      code: `
+enum T {
+  Value1,
+  Value2,
+}
+
+declare const a: T.Value1;
+const b = a as T;
+      `,
+    },
+    {
+      code: `
+enum T {
+  Value1 = 0,
+  Value2 = 1,
+}
+
+const b = 1 as T.Value2;
+      `,
+    },
   ],
 
   invalid: [
@@ -1253,5 +1285,55 @@ const a = '';
 const b: string | undefined = (a ? undefined : a);
       `,
     },
+    {
+      code: `
+enum T {
+  Value1,
+  Value2,
+}
+
+declare const a: T.Value1;
+const b = a as T.Value1;
+      `,
+      errors: [
+        {
+          messageId: 'unnecessaryAssertion',
+        },
+      ],
+      output: `
+enum T {
+  Value1,
+  Value2,
+}
+
+declare const a: T.Value1;
+const b = a;
+      `,
+    },
+    {
+      code: `
+enum T {
+  Value1,
+  Value2,
+}
+
+declare const a: T.Value1;
+const b = a as const;
+      `,
+      errors: [
+        {
+          messageId: 'unnecessaryAssertion',
+        },
+      ],
+      output: `
+enum T {
+  Value1,
+  Value2,
+}
+
+declare const a: T.Value1;
+const b = a;
+      `,
+    },
   ],
 });