Fix test_color_setting_per_instance

1 files changed, 3 insertions, 3 deletions

diff --git a/test/test_highline.rb b/test/test_highline.rb
index 946f110..76ed572 100755
--- a/test/test_highline.rb
+++ b/test/test_highline.rb
@@ -511,12 +511,12 @@ class TestHighLine < Minitest::Test
 
   def test_color_setting_per_instance
     require 'highline/import'
-    old_glob_term = $terminal
+    old_glob_instance = HighLine.default_instance
     old_setting = HighLine.use_color?
 
     gterm_input = StringIO.new
     gterm_output = StringIO.new
-    $terminal = HighLine.new(gterm_input, gterm_output)
+    HighLine.default_instance = HighLine.new(gterm_input, gterm_output)
 
     # It can set coloring at HighLine class
     cli_input = StringIO.new
@@ -600,7 +600,7 @@ class TestHighLine < Minitest::Test
 
     HighLine.use_color = old_setting
     @terminal.use_color = old_setting
-    $terminal = old_glob_term
+    HighLine.default_instance = old_glob_instance
   end
 
   def test_reset_use_color