update some deisng parameters and add new cases

test/cli_test.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+require "stringio"
+require_relative "test_helper"
+
+class CLITest < Minitest::Test
+  def test_main_prompt_is_not_an_extra_choice
+    output = StringIO.new
+    cli = FeatherCaseWizard::CLI.new(ui: HighLine.new(StringIO.new("4\n"), output))
+
+    assert_equal 0, cli.run
+    assert_includes output.string, "What would you like to do:\n"
+    assert_includes output.string, "4. Exit\n"
+    refute_includes output.string, "5. What would you like to do?"
+  end
+end