Expect stubs not method names

Needed for argument syntax:
`expect(dbl).to receive(:foo).with(:bar)`

src/spectator/expectations/expectation_partial.cr

@@ -25,7 +25,7 @@ module Spectator::Expectations
     end
 
     def to(stub : Mocks::MethodStub) : Nil
-      Harness.current.mocks.expect(@actual.value, stub.name)
+      Harness.current.mocks.expect(@actual.value, stub)
       value = TestValue.new(stub.name, stub.to_s)
       matcher = Matchers::ReceiveMatcher.new(value, stub.arguments?)
       to_eventually(matcher)

src/spectator/mocks/anonymous_double.cr

@@ -17,7 +17,7 @@ module Spectator::Mocks
         end
       else
         @values.fetch({{call.name.symbolize}}) do
-          return nil if ::Spectator::Harness.current.mocks.expected?(self, {{call.name.symbolize}})
+          return nil if ::Spectator::Harness.current.mocks.expected?(self, call)
           raise ::Spectator::Mocks::UnexpectedMessageError.new("#{self} received unexpected message {{call.name}}")
         end
       end

src/spectator/mocks/double.cr

@@ -62,7 +62,9 @@ module Spectator::Mocks
         {% if body && !body.is_a?(Nop) %}
           {{body.body}}
         {% else %}
-          unless ::Spectator::Harness.current.mocks.expected?(self, {{name.symbolize}})
+          %args = ::Spectator::Mocks::GenericArguments.create({{params.splat}})
+          %call = ::Spectator::Mocks::GenericMethodCall.new({{name.symbolize}}, %args)
+          unless ::Spectator::Harness.current.mocks.expected?(self, %call)
             raise ::Spectator::Mocks::UnexpectedMessageError.new("#{self} received unexpected message {{name}}")
           end
 
@@ -77,8 +79,12 @@ module Spectator::Mocks
     end
 
     macro method_missing(call)
+      args = ::Spectator::Mocks::GenericArguments.create({{call.args.splat}})
+      call = ::Spectator::Mocks::GenericMethodCall.new({{call.name.symbolize}}, args)
+      ::Spectator::Harness.current.mocks.record_call(self, call)
+
       return self if @null
-      return self if ::Spectator::Harness.current.mocks.expected?(self, {{call.name.symbolize}})
+      return self if ::Spectator::Harness.current.mocks.expected?(self, call)
 
       raise ::Spectator::Mocks::UnexpectedMessageError.new("#{self} received unexpected message {{call.name}}")
     end

src/spectator/mocks/registry.cr

@@ -5,7 +5,7 @@ module Spectator::Mocks
     private struct Entry
       getter stubs = Deque(MethodStub).new
       getter calls = Deque(MethodCall).new
-      getter expected = Set(Symbol).new
+      getter expected = Set(MethodStub).new
     end
 
     @all_instances = {} of String => Entry
@@ -65,17 +65,17 @@ module Spectator::Mocks
       fetch_type(type).calls.select { |call| call.name == method_name }
     end
 
-    def expected?(object, method_name : Symbol) : Bool
-      fetch_instance(object).expected.includes?(method_name) ||
-        fetch_type(object.class).expected.includes?(method_name)
+    def expected?(object, call : GenericMethodCall(T, NT)) : Bool forall T, NT
+      fetch_instance(object).expected.any?(&.callable?(call)) ||
+        fetch_type(object.class).expected.any?(&.callable?(call))
     end
 
-    def expect(object, method_name : Symbol) : Nil
-      fetch_instance(object).expected.add(method_name)
+    def expect(object, stub : MethodStub) : Nil
+      fetch_instance(object).expected.add(stub)
     end
 
-    def expect(type : T.class, method_name : Symbol) : Nil forall T
-      fetch_type(type).expected.add(method_name)
+    def expect(type : T.class, stub : MethodStub) : Nil forall T
+      fetch_type(type).expected.add(stub)
     end
 
     private def fetch_instance(object)