(fixup) try out my own cross-platform expect

spec/acceptance/bundle_spec.rb

@@ -1,6 +1,27 @@
 require 'spec_helper_acceptance'
-require 'pty'
-require 'expect'
+require 'open3'
+
+class IO
+  def expect(expected)
+    combined_output = ''
+
+    loop do
+      rs, = IO.select([self], [], [], 10)
+
+      next unless (r = rs[0])
+
+      data = r.read_nonblock(1024)
+      combined_output << data
+
+      if expected.match?(combined_output)
+        yield combined_output
+        break
+      end
+    end
+  rescue EOFError
+    nil
+  end
+end
 
 describe 'pdk bundle' do
   context 'in a new module' do
@@ -17,16 +38,16 @@
       its(:stdout) { is_expected.to match(%r{## Environment}) }
     end
 
-    context 'when running an interactive command', unless: Gem.win_platform? do
+    context 'when running an interactive command' do
       it 'works interactively' do
         command = 'pdk bundle exec pry --no-color --simple-prompt'
-        prompt = %r{>> }
+        prompt = %r{>> \Z}m
         exit_command = '!!!'
 
-        PTY.spawn(command) do |stdout, stdin, _|
-          stdout.expect(prompt) { |_| stdin.puts "require 'date'" }
-          stdout.expect(prompt) { |_| stdin.puts 'Date.today.year' }
-          stdout.expect(prompt) do |output|
+        Open3.popen2e(command) do |stdin, stdouterr, _|
+          stdouterr.expect(prompt) { |_| stdin.puts "require 'date'" }
+          stdouterr.expect(prompt) { |_| stdin.puts 'Date.today.year' }
+          stdouterr.expect(prompt) do |output|
             expect(output[0]).to match(%r{=> #{Date.today.year}}m)
             stdin.puts exit_command
           end