Added failing test case for #100

tests/spec/ReferenceTest.php

@@ -504,6 +504,23 @@ public function testReferencedCommonParamsInReferencedPath()
           enum:
             - test
           type: string
+    x-something: something
+  /something:
+    get:
+      responses:
+        200:
+          description: 'OK if common params can be references'
+    parameters:
+      -
+        name: test
+        in: header
+        description: 'Test parameter to be referenced'
+        required: true
+        schema:
+          enum:
+            - test
+          type: string
+    x-something: something
 
 YAML;
         // remove line endings to make string equal on windows

tests/spec/data/reference/ReferencedCommonParamsInReferencedPath.yml

@@ -5,3 +5,11 @@ info:
 paths:
   /example:
     $ref: 'paths/ReferencesCommonParams.yml'
+  /something:
+    parameters:
+      - $ref: './parameters/TestParameter.yml'
+    x-something: something
+    get:
+      responses:
+        200:
+          description: OK if common params can be references

tests/spec/data/reference/paths/ReferencesCommonParams.yml

@@ -1,6 +1,7 @@
 parameters:
   - $ref: '../parameters/TestParameter.yml'
 
+x-something: something
 get:
   responses:
     200: