From 50bce2065d5376b38a6eef86ab5c3df809db4787 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Mon, 13 Jul 2020 19:21:01 +0900
Subject: [ruby/tmpdir] Prefer better failure message

https://github.com/ruby/tmpdir/commit/ac12877306
---
 test/test_tmpdir.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'test/test_tmpdir.rb')

diff --git a/test/test_tmpdir.rb b/test/test_tmpdir.rb
index 50583b5ce1..5cd0b5ef92 100644
--- a/test/test_tmpdir.rb
+++ b/test/test_tmpdir.rb
@@ -5,7 +5,7 @@ require 'tmpdir'
 class TestTmpdir < Test::Unit::TestCase
   def test_tmpdir_modifiable
     tmpdir = Dir.tmpdir
-    assert_equal(false, tmpdir.frozen?)
+    assert_not_predicate(tmpdir, :frozen?)
     tmpdir_org = tmpdir.dup
     tmpdir << "foo"
     assert_equal(tmpdir_org, Dir.tmpdir)
-- 
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