fixed openapi4j resolver

Author: hauner

src/main/groovy/com/github/hauner/openapi/spring/parser/openapi4j/RefResolver.groovy

@@ -36,9 +36,18 @@ class RefResolver implements ParserRefResolver {
 
     @Override
     ParserSchema resolve (ParserSchema ref) {
-        O4jSchema o4jSchema = (ref as Schema).schema
-        def resolved = o4jSchema.copy (api.context, true)
-        return new Schema (resolved)
+        def resolved
+
+        def refName = getRefName (ref.ref)
+        O4jSchema o4jCompSchema = api.components.schemas.get (refName)
+        if (o4jCompSchema) {
+            resolved = o4jCompSchema
+        } else {
+            O4jSchema o4jSchema = (ref as Schema).schema
+            resolved = o4jSchema.copy (api.context, true)
+        }
+
+        new Schema (resolved)
     }
 
     private String getRefName (String ref) {

src/testInt/groovy/com/github/hauner/openapi/processor/ProcessorPendingTest.groovy

@@ -21,15 +21,15 @@ import org.junit.Ignore
 import org.junit.runner.RunWith
 import org.junit.runners.Parameterized
 
-//@Ignore
+@Ignore
 @RunWith(Parameterized)
 class ProcessorPendingTest extends ProcessorTestBase {
 
     @Parameterized.Parameters(name = "{0}")
     static Collection<TestSet> sources () {
         return [
-              new TestSet(name: 'ref-into-another-file', parser: ParserType.SWAGGER),
-              new TestSet(name: 'ref-into-another-file', parser: ParserType.OPENAPI4J)
+              new TestSet(name: 'response-complex-data-types', parser: ParserType.SWAGGER),
+              new TestSet(name: 'response-complex-data-types', parser: ParserType.OPENAPI4J)
         ]
     }