subcommand_spec.rb

require "helper"

describe Thor do
  describe "#subcommand" do
    it "maps a given subcommand to another Thor subclass" do
      barn_help = capture(:stdout) { Scripts::MyDefaults.start(%w(barn)) }
      expect(barn_help).to include("barn help [COMMAND]  # Describe subcommands or one specific subcommand")
    end

    it "passes commands to subcommand classes" do
      expect(capture(:stdout) { Scripts::MyDefaults.start(%w(barn open)) }.strip).to eq("Open sesame!")
    end

    it "passes arguments to subcommand classes" do
      expect(capture(:stdout) { Scripts::MyDefaults.start(%w(barn open shotgun)) }.strip).to eq("That's going to leave a mark.")
    end

    it "ignores unknown options (the subcommand class will handle them)" do
      expect(capture(:stdout) { Scripts::MyDefaults.start(%w(barn paint blue --coats 4)) }.strip).to eq("4 coats of blue paint")
    end

    it "passes parsed options to subcommands" do
      output = capture(:stdout) { TestSubcommands::Parent.start(%w(sub print_opt --opt output)) }
      expect(output).to eq("output")
    end

    it "accepts the help switch and calls the help command on the subcommand" do
      output = capture(:stdout) { TestSubcommands::Parent.start(%w(sub print_opt --help)) }
      sub_help = capture(:stdout) { TestSubcommands::Parent.start(%w(sub help print_opt)) }
      expect(output).to eq(sub_help)
    end

    it "accepts the help short switch and calls the help command on the subcommand" do
      output = capture(:stdout) { TestSubcommands::Parent.start(%w(sub print_opt -h)) }
      sub_help = capture(:stdout) { TestSubcommands::Parent.start(%w(sub help print_opt)) }
      expect(output).to eq(sub_help)
    end

    it "the help command on the subcommand and after it should result in the same output" do
      output = capture(:stdout) { TestSubcommands::Parent.start(%w(sub help)) }
      sub_help = capture(:stdout) { TestSubcommands::Parent.start(%w(help sub)) }
      expect(output).to eq(sub_help)
    end
  end

  context "subcommand with an arg" do
    module SubcommandTest1
      class Child1 < Thor
        desc "foo NAME", "Fooo"
        def foo(name)
          puts "#{name} was given"
        end
      end

      class Parent < Thor
        desc "child1", "child1 description"
        subcommand "child1", Child1
      end
    end

    it "shows subcommand name and method name" do
      sub_help = capture(:stderr) { SubcommandTest1::Parent.start(%w[child1 foo]) }
      expect(sub_help).to eq ['ERROR: "thor child1 foo" was called with no arguments', 'Usage: "thor child1 foo NAME"', ''].join("\n")
    end
  end

end