Fix enum comparison by looking on the definitive value (without style)

what-changed/model/schema.go

@@ -926,10 +926,10 @@ func checkSchemaPropertyChanges(
 	j = make(map[string]int)
 	k = make(map[string]int)
 	for i := range lSchema.Enum.Value {
-		j[toString(lSchema.Enum.Value[i].Value)] = i
+		j[toString(lSchema.Enum.Value[i].Value.Value)] = i
 	}
 	for i := range rSchema.Enum.Value {
-		k[toString(rSchema.Enum.Value[i].Value)] = i
+		k[toString(rSchema.Enum.Value[i].Value.Value)] = i
 	}
 	for g := range k {
 		if _, ok := j[g]; !ok {

what-changed/model/schema_test.go

@@ -434,6 +434,29 @@ components:
 	assert.Equal(t, v3.RequiredLabel, changes.Changes[0].Property)
 }
 
+func TestCompareSchemas_EnumSimilar(t *testing.T) {
+	left := `openapi: 3.0
+components:
+  schemas:
+    OK:
+      enum: [a]`
+
+	right := `openapi: 3.0
+components:
+  schemas:
+    OK:
+      enum: ["a"]`
+
+	leftDoc, rightDoc := test_BuildDoc(left, right)
+
+	// extract left reference schema and non reference schema.
+	lSchemaProxy := leftDoc.Components.Value.FindSchema("OK").Value
+	rSchemaProxy := rightDoc.Components.Value.FindSchema("OK").Value
+
+	changes := CompareSchemas(lSchemaProxy, rSchemaProxy)
+	assert.Nil(t, changes)
+}
+
 func TestCompareSchemas_EnumAdded(t *testing.T) {
 	left := `openapi: 3.0
 components: