Proper single character switch handling

Includes a test. So now you can do `brew cleanup -ns` and it will work.

1 files changed, 16 insertions, 1 deletions

diff --git a/Library/Homebrew/test/test_ARGV.rb b/Library/Homebrew/test/test_ARGV.rb
index 134921dca..7832f71e4 100644
--- a/Library/Homebrew/test/test_ARGV.rb
+++ b/Library/Homebrew/test/test_ARGV.rb
@@ -29,5 +29,20 @@ class ARGVTests < Test::Unit::TestCase
     assert_equal 1, ARGV.kegs.length
     assert_raises(FormulaUnavailableError) { ARGV.formulae }
   end
-  
+
+  def test_switch?
+    ARGV.reset
+    ARGV.unshift "-ns"
+    ARGV.unshift "-i"
+    ARGV.unshift "--bar"
+    assert ARGV.switch?('n')
+    assert ARGV.switch?('s')
+    assert ARGV.switch?('i')
+    assert !ARGV.switch?('b')
+    assert !ARGV.switch?('ns')
+    assert !ARGV.switch?('bar')
+    assert !ARGV.switch?('--bar')
+    assert !ARGV.switch?('-n')
+  end
+
 end