require_relative '../spec_helper'

describe "The --enable and --disable flags" do

  it "can be used with gems" do
    ruby_exe("p defined?(Gem)", options: "--enable=gems").chomp.should == "\"constant\""
    ruby_exe("p defined?(Gem)", options: "--disable=gems").chomp.should == "nil"
    ruby_exe("p defined?(Gem)", options: "--enable-gems").chomp.should == "\"constant\""
    ruby_exe("p defined?(Gem)", options: "--disable-gems").chomp.should == "nil"
  end

  it "can be used with gem" do
    ruby_exe("p defined?(Gem)", options: "--enable=gem").chomp.should == "\"constant\""
    ruby_exe("p defined?(Gem)", options: "--disable=gem").chomp.should == "nil"
    ruby_exe("p defined?(Gem)", options: "--enable-gem").chomp.should == "\"constant\""
    ruby_exe("p defined?(Gem)", options: "--disable-gem").chomp.should == "nil"
  end

  it "can be used with did_you_mean" do
    ruby_exe("p defined?(DidYouMean)", options: "--enable=did_you_mean").chomp.should == "\"constant\""
    ruby_exe("p defined?(DidYouMean)", options: "--disable=did_you_mean").chomp.should == "nil"
    ruby_exe("p defined?(DidYouMean)", options: "--enable-did_you_mean").chomp.should == "\"constant\""
    ruby_exe("p defined?(DidYouMean)", options: "--disable-did_you_mean").chomp.should == "nil"
  end

  it "can be used with rubyopt" do
    ruby_exe("p $VERBOSE", options: "--enable=rubyopt", env: {'RUBYOPT' => '-w'}).chomp.should == "true"
    ruby_exe("p $VERBOSE", options: "--disable=rubyopt", env: {'RUBYOPT' => '-w'}).chomp.should == "false"
    ruby_exe("p $VERBOSE", options: "--enable-rubyopt", env: {'RUBYOPT' => '-w'}).chomp.should == "true"
    ruby_exe("p $VERBOSE", options: "--disable-rubyopt", env: {'RUBYOPT' => '-w'}).chomp.should == "false"
  end

  it "can be used with frozen-string-literal" do
    ruby_exe("p 'foo'.frozen?", options: "--enable=frozen-string-literal").chomp.should == "true"
    ruby_exe("p 'foo'.frozen?", options: "--disable=frozen-string-literal").chomp.should == "false"
    ruby_exe("p 'foo'.frozen?", options: "--enable-frozen-string-literal").chomp.should == "true"
    ruby_exe("p 'foo'.frozen?", options: "--disable-frozen-string-literal").chomp.should == "false"
  end

  ruby_version_is "2.6" do
    it "can be used with jit" do
      ruby_exe("p RubyVM::MJIT.enabled?", options: "--disable=jit").chomp.should == "false"
      ruby_exe("p RubyVM::MJIT.enabled?", options: "--disable-jit").chomp.should == "false"

      mjit_disabled = false
      begin
        warning = IO.popen([RbConfig.ruby, '--jit-warning', '-e', ''], err: [:child, :out], &:read)
        mjit_disabled = warning.include?('warning: MJIT support is disabled.') # ./configure --disable-jit-support
      rescue Errno::ENOENT # for msys2 https://ci.appveyor.com/project/ruby/ruby/builds/23429035/job/dvjqa34m9pxvv2nt
      end
      if mjit_disabled
        ruby_exe("p RubyVM::MJIT.enabled?", options: "--enable=jit").chomp.should == "false"
        ruby_exe("p RubyVM::MJIT.enabled?", options: "--enable-jit").chomp.should == "false"
      else
        ruby_exe("p RubyVM::MJIT.enabled?", options: "--enable=jit").chomp.should == "true"
        ruby_exe("p RubyVM::MJIT.enabled?", options: "--enable-jit").chomp.should == "true"
      end
    end
  end

  it "can be used with all" do
    e = "p [defined?(Gem), defined?(DidYouMean), $VERBOSE, 'foo'.frozen?]"
    env = {'RUBYOPT' => '-w'}
    ruby_exe(e, options: "--enable=all", env: env).chomp.should == "[\"constant\", \"constant\", true, true]"
    ruby_exe(e, options: "--enable-all", env: env).chomp.should == "[\"constant\", \"constant\", true, true]"
    ruby_exe(e, options: "--disable=all", env: env).chomp.should == "[nil, nil, false, false]"
    ruby_exe(e, options: "--disable-all", env: env).chomp.should == "[nil, nil, false, false]"
  end

  it "prints a warning for unknown features" do
    ruby_exe("p 14", options: "--enable=ruby-spec-feature-does-not-exist 2>&1").chomp.should include('warning: unknown argument for --enable')
    ruby_exe("p 14", options: "--disable=ruby-spec-feature-does-not-exist 2>&1").chomp.should include('warning: unknown argument for --disable')
    ruby_exe("p 14", options: "--enable-ruby-spec-feature-does-not-exist 2>&1").chomp.should include('warning: unknown argument for --enable')
    ruby_exe("p 14", options: "--disable-ruby-spec-feature-does-not-exist 2>&1").chomp.should include('warning: unknown argument for --disable')
  end

end