Fix #213: Add --version again which got lost in c619dd6.

lib/twine/cli.rb

@@ -220,21 +220,25 @@ module Twine
       command = args.select { |a| a[0] != '-' }[0]
       args = args.reject { |a| a == command }
 
+      if args.any? { |a| a == '--version' }
+        Twine::stdout.puts "Twine version #{Twine::VERSION}"
+        return false
+      end
+
       mapped_command = DEPRECATED_COMMAND_MAPPINGS[command]
       if mapped_command
         Twine::stderr.puts "WARNING: Twine commands names have changed. `#{command}` is now `#{mapped_command}`. The old command is deprecated and will soon stop working. For more information please check the documentation at https://github.com/mobiata/twine"
         command = mapped_command
       end
 
-      unless COMMANDS.keys.include? command
-        Twine::stderr.puts "Invalid command: #{command}" unless command.nil?
+      if command.nil?
         print_help(args)
-        abort
+        return false
+      elsif not COMMANDS.keys.include? command
+        raise Twine::Error.new "Invalid command: #{command}"
       end
 
-      options = parse_command_options(command, args)
-
-      return options
+      parse_command_options(command, args)
     end
 
     private
@@ -361,8 +365,8 @@ module Twine
       end
 
       parser.define('-h', '--help', 'Show this message.') do
-        puts parser.help
-        exit
+        Twine::stdout.puts parser.help
+        return false
       end
 
       parser.separator ''

lib/twine/runner.rb

@@ -7,6 +7,8 @@ module Twine
   class Runner
     def self.run(args)
       options = CLI.parse(args)
+
+      return unless options
       
       twine_file = TwineFile.new
       twine_file.read options[:twine_file]

test/test_cli.rb

@@ -17,6 +17,12 @@ class CLITest < TwineTest
     raise "you need to implement `parse_with` in your test class"
   end
 
+  def assert_help
+    parse_with '--help'
+    assert_equal @options, false
+    assert_match /Usage: twine.*Examples:/m, Twine::stdout.string
+  end
+
   def assert_option_consume_all
     parse_with '--consume-all'
     assert @options[:consume_all]
@@ -115,6 +121,26 @@ class CLITest < TwineTest
   end
 end
 
+class TestCLI < CLITest
+  def test_version
+    parse "--version"
+
+    assert_equal @options, false
+    assert_equal "Twine version #{Twine::VERSION}\n", Twine::stdout.string
+  end
+
+  def test_help
+    parse ""
+    assert_match 'Usage: twine', Twine::stdout.string
+  end
+
+  def test_invalid_command
+    assert_raises Twine::Error do
+      parse "not a command"
+    end
+  end
+end
+
 class TestGenerateLocalizationFileCLI < CLITest
   def parse_with(parameters)
     parse "generate-localization-file #{@twine_file_path} #{@output_path} " + parameters
@@ -141,6 +167,7 @@ class TestGenerateLocalizationFileCLI < CLITest
   end
 
   def test_options
+    assert_help
     assert_option_developer_language
     assert_option_encoding
     assert_option_format
@@ -179,6 +206,7 @@ class TestGenerateAllLocalizationFilesCLI < CLITest
   end
 
   def test_options
+    assert_help
     assert_option_developer_language
     assert_option_encoding
     assert_option_format
@@ -228,6 +256,7 @@ class TestGenerateLocalizationArchiveCLI < CLITest
   end
 
   def test_options
+    assert_help
     assert_option_developer_language
     assert_option_encoding
     assert_option_include
@@ -279,6 +308,7 @@ class TestConsumeLocalizationFileCLI < CLITest
   end
 
   def test_options
+    assert_help
     assert_option_consume_all
     assert_option_consume_comments
     assert_option_developer_language
@@ -317,6 +347,7 @@ class TestConsumeAllLocalizationFilesCLI < CLITest
   end
 
   def test_options
+    assert_help
     assert_option_consume_all
     assert_option_consume_comments
     assert_option_developer_language
@@ -353,6 +384,7 @@ class TestConsumeLocalizationArchiveCLI < CLITest
   end
 
   def test_options
+    assert_help
     assert_option_consume_all
     assert_option_consume_comments
     assert_option_developer_language
@@ -398,6 +430,7 @@ class TestValidateTwineFileCLI < CLITest
   end
 
   def test_options
+    assert_help
     assert_option_developer_language
   end