support + sign for float options

Signed-off-by: Hansuk <flavono123@gmail.com>

2 files changed, 6 insertions, 2 deletions

diff --git a/lib/slop/types.rb b/lib/slop/types.rb
index 4cd6136..07d7e62 100644
--- a/lib/slop/types.rb
+++ b/lib/slop/types.rb
@@ -53,7 +53,7 @@ module Slop
   class FloatOption < Option
     def call(value)
       # TODO: scientific notation, etc.
-      value =~ /\A-?\d*\.*\d+\z/ && value.to_f
+      value =~ /\A[+-]?\d*\.*\d+\z/ && value.to_f
     end
   end
 
diff --git a/test/types_test.rb b/test/types_test.rb
index ff1363c..171c4d9 100644
--- a/test/types_test.rb
+++ b/test/types_test.rb
@@ -54,11 +54,15 @@ describe Slop::FloatOption do
     @options = Slop::Options.new
     @apr     = @options.float "--apr"
     @apr_value = 2.9
-    @result  = @options.parse %W(--apr #{@apr_value})
+    @minus = @options.float "--minus"
+    @plus = @options.float "--plus"
+    @result  = @options.parse %W(--apr #{@apr_value} --minus -6.1 --plus +9.4)
   end
 
   it "returns the value as a float" do
     assert_equal @apr_value, @result[:apr]
+    assert_equal (-6.1), @result[:minus]
+    assert_equal 9.4, @result[:plus]
   end
 
   it "returns nil for non-numbers by default" do