chore: add a test for application/vnd.api+json media type

internal/app/proxy_stage_test.go

@@ -117,18 +117,22 @@ func (s *ProxyStage) and() *ProxyStage {
 }
 
 func (s *ProxyStage) a_pact_that_allows_any_names() *ProxyStage {
+	return s.a_pact_that_allows_any_names_for_content("application/json")
+}
+
+func (s *ProxyStage) a_pact_that_allows_any_names_for_content(contentType string) *ProxyStage {
 	s.pact.
 		AddInteraction().
 		UponReceiving(s.pactName).
 		WithRequest(dsl.Request{
 			Method:  "POST",
 			Path:    dsl.String("/users"),
-			Headers: dsl.MapMatcher{"Content-Type": dsl.String("application/json")},
+			Headers: dsl.MapMatcher{"Content-Type": dsl.String(contentType)},
 			Body:    dsl.MapMatcher{"name": dsl.Regex("any", ".*")},
 		}).
 		WillRespondWith(dsl.Response{
 			Status:  200,
-			Headers: dsl.MapMatcher{"Content-Type": dsl.String("application/json")},
+			Headers: dsl.MapMatcher{"Content-Type": dsl.String(contentType)},
 			Body:    map[string]string{"name": "any"},
 		})
 	return s

internal/app/proxy_test.go

@@ -1,6 +1,7 @@
 package app
 
 import (
+	"fmt"
 	"net/http"
 	"testing"
 
@@ -95,6 +96,21 @@ func TestConstraintHeaderMatch(t *testing.T) {
 		pact_can_be_generated()
 }
 
+func TestConstraintHeaderMatchJSONAPIContent(t *testing.T) {
+	given, when, then := NewProxyStage(t)
+
+	given.
+		a_pact_that_allows_any_names_for_content("application/vnd.api+json").and().
+		a_content_type_constraint_is_added("application/vnd.api+json")
+
+	when.
+		n_requests_are_sent_using_the_body_and_content_type(1, fmt.Sprintf(`{"name":"%s"}`, "sam"), "application/vnd.api+json")
+
+	then.
+		pact_verification_is_successful().and().
+		pact_can_be_generated()
+}
+
 func TestConstraintHeaderDoesntMatch(t *testing.T) {
 	given, when, then := NewProxyStage(t)