* lib/optparse.rb: shell completion support for bash.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29832 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/optparse/test_bash_completion.rb

@@ -0,0 +1,42 @@
+require 'test/unit'
+require 'optparse'
+
+class TestOptionParser < Test::Unit::TestCase
+end
+class TestOptionParser::BashCompletion < Test::Unit::TestCase
+  def setup
+    @opt = OptionParser.new
+    @opt.define("-z", "zzz") {}
+    @opt.define("--foo") {}
+    @opt.define("--bar=BAR") {}
+    @opt.define("--for=TYPE", [:hello, :help, :zot]) {}
+  end
+
+  def test_empty
+    assert_equal([], @opt.candidate(""))
+  end
+
+  def test_one_hyphen
+    assert_equal(%w[-z --foo --bar= --for=], @opt.candidate("-"))
+  end
+
+  def test_two_hyphen
+    assert_equal(%w[--foo --bar= --for=], @opt.candidate("--"))
+  end
+
+  def test_long_f
+    assert_equal(%w[--foo --for=], @opt.candidate("--f"))
+  end
+
+  def test_long_for_option
+    assert_equal(%w[--for=], @opt.candidate("--for"))
+  end
+
+  def test_long_for_option_args
+    assert_equal(%w[hello help zot], @opt.candidate("--for="))
+  end
+
+  def test_long_for_option_complete
+    assert_equal(%w[hello help], @opt.candidate("--for=h"))
+  end
+end