1 files changed, 38 insertions, 32 deletions
diff --git a/test/rubygems/test_gem_silent_ui.rb b/test/rubygems/test_gem_silent_ui.rb
index 355255fb48..001a73eb51 100644
--- a/test/rubygems/test_gem_silent_ui.rb
+++ b/test/rubygems/test_gem_silent_ui.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
-require_relative 'helper'
-require 'rubygems/user_interaction'
-require 'timeout'
+
+require_relative "helper"
+require "rubygems/user_interaction"
 
 class TestGemSilentUI < Gem::TestCase
   def setup
@@ -18,28 +18,28 @@ class TestGemSilentUI < Gem::TestCase
     value = nil
     out, err = capture_output do
       use_ui @sui do
-        value = @sui.ask 'Problem?'
+        value = @sui.ask "Problem?"
       end
     end
 
-    assert_empty out, 'No output'
-    assert_empty err, 'No output'
+    assert_empty out, "No output"
+    assert_empty err, "No output"
 
-    assert_nil value, 'No value'
+    assert_nil value, "No value"
   end
 
   def test_ask_for_password
     value = nil
     out, err = capture_output do
       use_ui @sui do
-        value = @sui.ask_for_password 'Problem?'
+        value = @sui.ask_for_password "Problem?"
       end
     end
 
-    assert_empty out, 'No output'
-    assert_empty err, 'No output'
+    assert_empty out, "No output"
+    assert_empty err, "No output"
 
-    assert_nil value, 'No value'
+    assert_nil value, "No value"
   end
 
   def test_ask_yes_no
@@ -47,70 +47,76 @@ class TestGemSilentUI < Gem::TestCase
     out, err = capture_output do
       use_ui @sui do
         assert_raise(Gem::OperationNotSupportedError) do
-          @sui.ask_yes_no 'Problem?'
+          @sui.ask_yes_no "Problem?"
         end
       end
     end
 
-    assert_empty out, 'No output'
-    assert_empty err, 'No output'
+    assert_empty out, "No output"
+    assert_empty err, "No output"
 
     out, err = capture_output do
       use_ui @sui do
-        value = @sui.ask_yes_no 'Problem?', true
+        value = @sui.ask_yes_no "Problem?", true
       end
     end
 
-    assert_empty out, 'No output'
-    assert_empty err, 'No output'
+    assert_empty out, "No output"
+    assert_empty err, "No output"
 
-    assert value, 'Value is true'
+    assert value, "Value is true"
 
     out, err = capture_output do
       use_ui @sui do
-        value = @sui.ask_yes_no 'Problem?', false
+        value = @sui.ask_yes_no "Problem?", false
       end
     end
 
-    assert_empty out, 'No output'
-    assert_empty err, 'No output'
+    assert_empty out, "No output"
+    assert_empty err, "No output"
 
-    assert_equal value, false, 'Value is false'
+    assert_equal value, false, "Value is false"
   end
 
   def test_choose_from_list
     value = nil
     out, err = capture_output do
       use_ui @sui do
-        value = @sui.choose_from_list 'Problem?', %w[yes no]
+        value = @sui.choose_from_list "Problem?", %w[yes no]
       end
     end
 
-    assert_empty out, 'No output'
-    assert_empty err, 'No output'
+    assert_empty out, "No output"
+    assert_empty err, "No output"
 
-    assert_equal [nil, nil], value, 'Value is nil!'
+    assert_equal [nil, nil], value, "Value is nil!"
   end
 
   def test_progress_reporter
     out, err = capture_output do
       use_ui @sui do
-        @sui.progress_reporter 10, 'hi'
+        @sui.progress_reporter 10, "hi"
       end
     end
 
-    assert_empty out, 'No output'
-    assert_empty err, 'No output'
+    assert_empty out, "No output"
+    assert_empty err, "No output"
   end
 
   def test_download_reporter
     out, err = capture_output do
       use_ui @sui do
-        @sui.download_reporter.fetch 'a.gem', 1024
+        @sui.download_reporter.fetch "a.gem", 1024
       end
     end
 
-    assert_empty out, 'No output'
-    assert_empty err, 'No output'
+    assert_empty out, "No output"
+    assert_empty err, "No output"
+  end
+
+  def test_new_without_dev_null
+    File.stub(:open, ->(path, _mode) { raise Errno::ENOTCAPABLE if path == IO::NULL }) do
+      Gem::SilentUI.new
+    end
   end
 end