From 3157efa57c412865e828d8cd87cf5c3dcbb3afac Mon Sep 17 00:00:00 2001
From: Mark Delk <jethrodaniel@gmail.com>
Date: Mon, 8 Jun 2020 00:15:33 -0500
Subject: only use GEMNAME if defined in assert.rb

Check if the constant GEMNAME is defined before use in `assert.rb`.

This is added to prevent an undefined constant error when using
`assert.rb` in other environments - for example, testing CRuby.
---
 test/assert.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'test/assert.rb')

diff --git a/test/assert.rb b/test/assert.rb
index b4029f175..73382fb1c 100644
--- a/test/assert.rb
+++ b/test/assert.rb
@@ -56,7 +56,9 @@ def assertion_string(err, str, iso=nil, e=nil, bt=nil)
   msg = "#{err}#{str}"
   msg += " [#{iso}]" if iso && !iso.empty?
   msg += " => #{e}" if e && !e.to_s.empty?
-  msg += " (#{GEMNAME == 'mruby-test' ? 'core' : "mrbgems: #{GEMNAME}"})"
+  if Object.const_defined?(:GEMNAME)
+    msg += " (#{GEMNAME == 'mruby-test' ? 'core' : "mrbgems: #{GEMNAME}"})"
+  end
   if $mrbtest_assert
     $mrbtest_assert.each do |idx, assert_msg, diff|
       msg += "\n - Assertion[#{idx}]"
-- 
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