Raising an ArgumentError when uri is passed as Pathname object to stu…

…b_request or assert_requested.

lib/webmock/request_pattern.rb

@@ -84,11 +84,12 @@ def create_uri_pattern(uri)
         URIAddressablePattern.new(uri)
       elsif uri.respond_to?(:call)
         URICallablePattern.new(uri)
-      else
+      elsif uri.is_a?(String)
         URIStringPattern.new(uri)
+      else
+        raise ArgumentError.new("URI should be a String, Regexp, Addressable::Template or a callable object. Got: #{uri.class}")
       end
     end
-
   end
 
 

spec/unit/request_pattern_spec.rb

@@ -436,6 +436,14 @@ def match(request_signature)
           end
         end
       end
+
+      describe "when uri is passed as Pathname" do
+        it "should raise an ArgumentError" do
+          expect {
+            WebMock::RequestPattern.new(:get, Pathname.new("www.example.com"))
+          }.to raise_error(ArgumentError, "URI should be a String, Regexp, Addressable::Template or a callable object. Got: Pathname")
+        end
+      end
     end
 
     describe "when matching requests with body" do