rm unused OutputAsTTY helper

Library/Homebrew/test/spec_helper.rb

@@ -44,7 +44,6 @@ require "test/support/helper/files"
 require "test/support/helper/fixtures"
 require "test/support/helper/formula"
 require "test/support/helper/mktmpdir"
-require "test/support/helper/output_as_tty"
 
 require "test/support/helper/spec/shared_context/homebrew_cask" if OS.mac?
 require "test/support/helper/spec/shared_context/integration_test"
@@ -131,15 +130,12 @@ RSpec.configure do |config|
 
   config.include(FileUtils)
 
-  config.include(Context)
-
   config.include(RuboCop::RSpec::ExpectOffense)
 
   config.include(Test::Helper::Cask)
   config.include(Test::Helper::Fixtures)
   config.include(Test::Helper::Formula)
   config.include(Test::Helper::MkTmpDir)
-  config.include(Test::Helper::OutputAsTTY)
 
   config.before(:each, :needs_linux) do
     skip "Not running on Linux." unless OS.linux?

Library/Homebrew/test/support/helper/output_as_tty.rb

@@ -1,88 +0,0 @@
-# frozen_string_literal: true
-
-require "delegate"
-
-module Test
-  module Helper
-    module OutputAsTTY
-      # This is a custom wrapper for the `output` matcher,
-      # used for testing output to a TTY:
-      #
-      #   expect {
-      #     print "test" if $stdout.tty?
-      #   }.to output("test").to_stdout.as_tty
-      #
-      #   expect {
-      #     # command
-      #   }.to output(...).to_stderr.as_tty.with_color
-      #
-      class Output < SimpleDelegator
-        def matches?(block)
-          return super(block) unless @tty
-
-          colored_tty_block = lambda do
-            instance_eval("$#{@output}  # $stdout", __FILE__, __LINE__).extend(Module.new do
-              def tty?
-                true
-              end
-
-              alias_method :isatty, :tty?
-            end)
-            block.call
-          end
-
-          return super(colored_tty_block) if @colors
-
-          uncolored_tty_block = lambda do
-            instance_eval <<-EOS, __FILE__, __LINE__ + 1
-              begin                                                       # begin
-                captured_stream = StringIO.new                            #   captured_stream = StringIO.new
-
-                original_stream = $#{@output}                             #   original_stream = $stdout
-                $#{@output} = captured_stream                             #   $stdout = captured_stream
-
-                colored_tty_block.call                                    #   colored_tty_block.call
-              ensure                                                      # ensure
-                $#{@output} = original_stream                             #   $stdout = original_stream
-                $#{@output}.print Tty.strip_ansi(captured_stream.string)  #   $stdout.print Tty.strip_ansi(captured_stream.string)
-              end                                                         # end
-            EOS
-          end
-
-          super(uncolored_tty_block)
-        end
-
-        def to_stdout
-          @output = :stdout
-          super
-          self
-        end
-
-        def to_stderr
-          @output = :stderr
-          super
-          self
-        end
-
-        def as_tty
-          @tty = true
-          return self if [:stdout, :stderr].include?(@output)
-
-          raise "`as_tty` can only be chained to `stdout` or `stderr`."
-        end
-
-        def with_color
-          @colors = true
-          return self if @tty
-
-          raise "`with_color` can only be chained to `as_tty`."
-        end
-      end
-
-      def output(*args)
-        core_matcher = super(*args)
-        Output.new(core_matcher)
-      end
-    end
-  end
-end

Library/Homebrew/test/system_command_spec.rb

@@ -194,6 +194,8 @@ RSpec.describe SystemCommand do
       end
 
       context "when `debug?` is true" do
+        include Context
+
         let(:options) do
           { args: [
             "-c",