fix: gracefully handle diff between an expected multipart form request and an actual application/json request

Fixes: pact-foundation#68

Author: bethesque

lib/pact/shared/multipart_form_differ.rb

@@ -9,6 +9,8 @@ def self.call expected, actual, options = {}
       actual_boundary = actual.split.first
       actual_with_hardcoded_boundary = actual.gsub(actual_boundary, expected_boundary)
       TextDiffer.call(expected, actual_with_hardcoded_boundary, options)
+    rescue StandardError
+      TextDiffer.call(expected, actual, options)
     end
   end
 end

spec/lib/pact/shared/multipart_form_differ_spec.rb

@@ -2,9 +2,7 @@
 
 module Pact
   describe MultipartFormDiffer do
-
     describe ".call" do
-
       let(:expected_body) do
         "-------------RubyMultipartPost-1e4912957c7bb64de3c444568326663b\r\nContent-Disposition: form-data; name=\"file\"; filename=\"text.txt\"\r\nContent-Length: 14\r\nContent-Type: text/plain\r\nContent-Transfer-Encoding: binary\r\n\r\nThis is a file\r\n-------------RubyMultipartPost-1e4912957c7bb64de3c444568326663b--\r\n\r\n"
       end
@@ -34,6 +32,18 @@ module Pact
           expect(subject).to_not eq({})
         end
       end
+
+      context "when the actual is the hash body of application/json request" do
+        let(:actual_body) do
+          {
+            "some" => "hash"
+          }
+        end
+
+        it "doesn't blow up" do
+          subject
+        end
+      end
     end
   end
 end