Add ability to run command in pseudo terminal in reference to issue #33

lib/tty/command.rb

@@ -53,6 +53,7 @@ def initialize(**options)
       @dry_run = options.fetch(:dry_run) { false }
       @printer = use_printer(@printer_name, color: @color, uuid: @uuid)
       @cmd_options = {}
+      @cmd_options[:pty] = true if options[:pty]
       @cmd_options[:binmode] = true if options[:binmode]
       @cmd_options[:timeout] = options[:timeout] if options[:timeout]
     end

lib/tty/command/execute.rb

@@ -23,11 +23,18 @@ module Execute
       def spawn(cmd)
         process_opts = normalize_redirect_options(cmd.options)
         binmode = cmd.options[:binmode] || false
+        pty     = cmd.options[:pty] || false
+        pipe    = IO.method(:pipe)
+
+        if pty
+          require 'pty'
+          pipe = PTY.method(:open)
+        end
 
         # Create pipes
-        in_rd,  in_wr  = IO.pipe # reading
-        out_rd, out_wr = IO.pipe # writing
-        err_rd, err_wr = IO.pipe # error
+        in_rd,  in_wr  = pipe.() # reading
+        out_rd, out_wr = pipe.() # writing
+        err_rd, err_wr = pipe.() # error
         in_wr.sync = true
 
         if binmode

spec/unit/pty_spec.rb

@@ -0,0 +1,23 @@
+RSpec.describe TTY::Command, ':pty' do
+  it "executes command in pseudo terminal mode as global option" do
+    color_cli = tmp_path('color')
+    output = StringIO.new
+    cmd = TTY::Command.new(output: output, pty: true)
+
+    out, err = cmd.run(color_cli)
+
+    expect(err).to eq('')
+    expect(out).to eq("\e[32mcolored\e[0m\r\n")
+  end
+
+  it "executes command in pseudo terminal mode as command option" do
+    color_cli = tmp_path('color')
+    output = StringIO.new
+    cmd = TTY::Command.new(output: output)
+
+    out, err = cmd.run(color_cli, pty: true)
+
+    expect(err).to eq('')
+    expect(out).to eq("\e[32mcolored\e[0m\r\n")
+  end
+end