@@ -92,4 +92,35 @@ class FzyTest < Minitest::Test

     @tty.assert_row(1, 'tz')

     @tty.assert_cursor_position(y: 2, x: 0)

   end

+

+  def ctrl(key)

+    ((key.upcase.ord) - ('A'.ord) + 1).chr

+  end

+

+  def test_editing

+    @tty = TTYtest.driver.new_terminal(%{echo placeholder;echo -n "test\nfoo" | fzy})

+    @tty.assert_row(0, 'placeholder')

+    @tty.assert_row(1, '>')

+    @tty.assert_cursor_position(y: 1, x: 2)

+

+    @tty.send_keys("foo bar baz")

+    @tty.assert_row(0, 'placeholder')

+    @tty.assert_row(1, '> foo bar baz')

+    @tty.assert_cursor_position(y: 1, x: 13)

+

+    @tty.send_keys(ctrl('H'))

+    @tty.assert_row(0, 'placeholder')

+    @tty.assert_row(1, '> foo bar ba')

+    @tty.assert_cursor_position(y: 1, x: 12)

+

+    @tty.send_keys(ctrl('W'))

+    @tty.assert_row(0, 'placeholder')

+    @tty.assert_row(1, '> foo bar')

+    @tty.assert_cursor_position(y: 1, x: 10)

+

+    @tty.send_keys(ctrl('U'))

+    @tty.assert_row(0, 'placeholder')

+    @tty.assert_row(1, '>')

+    @tty.assert_cursor_position(y: 1, x: 2)

+  end

 end