From 49bfc6b555ca3be3084c0819391eabf2839e6f1b Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Fri, 23 Mar 2018 03:43:52 +0800
Subject: improve performance (#3020)

- replace `find_if()` with `all()` wherever possible
- move ESTree-specific logic out of `figure_out_scope()`
---
 test/mocha/minify.js | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'test/mocha/minify.js')

diff --git a/test/mocha/minify.js b/test/mocha/minify.js
index 02180a59..995897da 100644
--- a/test/mocha/minify.js
+++ b/test/mocha/minify.js
@@ -312,6 +312,15 @@ describe("minify", function() {
             assert.strictEqual(err.line, 1);
             assert.strictEqual(err.col, 12);
         });
+        it("should reject duplicated label name", function() {
+            var result = Uglify.minify("L:{L:{}}");
+            var err = result.error;
+            assert.ok(err instanceof Error);
+            assert.strictEqual(err.stack.split(/\n/)[0], "SyntaxError: Label L defined twice");
+            assert.strictEqual(err.filename, "0");
+            assert.strictEqual(err.line, 1);
+            assert.strictEqual(err.col, 4);
+        });
     });
 
     describe("global_defs", function() {
-- 
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