Fixed validation issue where content type header was reported missing even if present

lib/schemaUtils.js

@@ -1865,7 +1865,7 @@ module.exports = {
       return null;
     }
     _.forOwn(response.headers, (value, key) => {
-      if (key !== 'Content-Type') {
+      if (_.toLower(key) !== 'content-type') {
         if (value.$ref) {
           // the convert to PmHeader function handles the
           // schema-faking
@@ -3726,7 +3726,8 @@ module.exports = {
           return false;
         }
         h.name = hName;
-        return h.required;
+        // exclude non-required and implicit header from further validation
+        return h.required && !_.includes(IMPLICIT_HEADERS, _.toLower(hName));
       }), (header) => {
         if (!_.find(resHeaders, (param) => { return param.key === header.name; })) {
 

test/data/validationData/implicitHeaderSpec.yaml

@@ -35,6 +35,12 @@ paths:
           description: Null response
         default:
           description: unexpected error
+          headers:
+            content-type:
+              description: content-type of response body
+              required: true
+              schema:
+                type: string
           content:
             application/json:
               schema:

test/unit/validator.test.js

@@ -415,6 +415,10 @@ describe('VALIDATE FUNCTION TESTS ', function () {
           the mismatch for header-1 should contain correct index as in request.
         */
         expect(_.endsWith(resultObj.mismatches[0].transactionJsonPath, '[2].value')).to.eql(true);
+        _.forEach(resultObj.responses, (response) => {
+          expect(response.matched).to.be.true;
+          expect(response.mismatches).to.have.lengthOf(0);
+        });
         done();
       });
     });