Adds shared options support in OmniAuth::Builder. Closes #584

lib/omniauth/builder.rb

@@ -23,6 +23,11 @@ module OmniAuth
       OmniAuth.configure(&block)
     end
 
+    def options(options = false)
+      return @options || {} if options == false
+      @options = options
+    end
+
     def provider(klass, *args, &block)
       if klass.is_a?(Class)
         middleware = klass
@@ -34,6 +39,7 @@ module OmniAuth
         end
       end
 
+      args.last.is_a?(Hash) ? args.push(options.merge(args.pop)) : args.push(options)
       use middleware, *args, &block
     end
 

spec/omniauth/builder_spec.rb

@@ -17,7 +17,7 @@ describe OmniAuth::Builder do
       end }.should_not raise_error
     end
 
-    it "should raise a helpful LoadError messgae if it can't find the class" do
+    it "should raise a helpful LoadError message if it can't find the class" do
       expect {
         OmniAuth::Builder.new(nil) do
           provider :lorax
@@ -25,4 +25,24 @@ describe OmniAuth::Builder do
       }.to raise_error(LoadError, "Could not find matching strategy for :lorax. You may need to install an additional gem (such as omniauth-lorax).")
     end
   end
+
+  describe '#options' do
+    it 'should merge provided options in' do
+      k = Class.new
+      b = OmniAuth::Builder.new(nil)
+      b.should_receive(:use).with(k, :foo => 'bar', :baz => 'tik')
+
+      b.options :foo => 'bar'
+      b.provider k, :baz => 'tik'
+    end
+
+    it 'should add an argument if no options are provided' do
+      k = Class.new
+      b = OmniAuth::Builder.new(nil)
+      b.should_receive(:use).with(k, :foo => 'bar')
+
+      b.options :foo => 'bar'
+      b.provider k
+    end
+  end
 end