Support optional arguments

lib/bogus/interaction.rb

@@ -18,6 +18,10 @@ def any_args?
       args == [AnyArgs]
     end
 
+    def args
+      super.reject { |arg| arg.eql?(Bogus::DefaultValue) }
+    end
+
     private
 
     def same_args?(other)

spec/bogus/interaction_spec.rb

@@ -5,6 +5,7 @@ class SomeError < StandardError; end
 
   same = [
     [[:foo, [:bar], "value"], [:foo, [:bar], "value"]],
+    [[:foo, [:bar, Bogus::DefaultValue], "value"], [:foo, [:bar], "value"]],
     [[:foo, [:bar]], [:foo, [:bar], "value"]],
     [[:foo, [:bar], "value"], [:foo, [:bar]]],
     [[:foo, [:bar]], [:foo, [:bar]]],
@@ -21,6 +22,7 @@ class SomeError < StandardError; end
     [[:foo, [:bar], "value"], [:foo, [:bar], "value2"]],
     [[:foo, [:bar], "value"], [:baz, [:bar], "value"]],
     [[:foo, [:baz], "value"], [:foo, [:bar], "value"]],
+    [[:foo, [Bogus::DefaultValue, :baz], "value"], [:foo, [:bar, :bar], "value"]],
     [[:foo, [Bogus::AnyArgs]], [:bar, [:bar]]],
     [[:foo, [:bar]], [:bar, [Bogus::AnyArgs]]],
     [[:foo, [Bogus::AnyArgs], "some value"], [:foo, [:bar], "other value"]],

spec/bogus/mocking_dsl_spec.rb

@@ -8,6 +8,9 @@ def foo(bar)
     def hello(greeting, name)
     end
 
+    def with_optional_args(x, y = 1)
+    end
+
     def self.bar(baz)
       "Hello #{baz}"
     end
@@ -85,6 +88,12 @@ class Stubber
           the_fake.should Stubber.have_received.foo("test", "test 2")
         }.to raise_error(ArgumentError)
       end
+
+      it "allows spying on methods with optional parameters" do
+        the_fake.with_optional_args(123)
+
+        the_fake.should Stubber.have_received.with_optional_args(123)
+      end
     end
 
     it "can be used with plain old Ruby objects" do
@@ -96,6 +105,15 @@ class Stubber
       object.should Stubber.have_received.foo("test")
     end
 
+    it "allows spying on methods with optional parameters" do
+      object = ExampleFoo.new
+      Stubber.stub(object).with_optional_args(123) { 999 }
+
+      object.with_optional_args(123).should == 999
+
+      object.should Stubber.have_received.with_optional_args(123)
+    end
+
     class ClassWithMatches
       def matches?(something)
       end