Test for correct behaviour of unresolved query references

Change-Id: I4b5ccc3145a87d5609dc235733db0fd85e866030
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java b/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java
index 0613d31..47a43eb 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java
@@ -776,7 +776,6 @@
         };
     };    
 
-
     @Test
     public void queryJSONmerge () throws QueryException {
         // treat merging gracefully
@@ -788,4 +787,32 @@
                 "spanNext(tokens:s:der, tokens:s:Baum)");
 		assertEquals(kq.getWarning(0).getCode(), 774);
     };
+
+    @Test
+    public void queryJSONqueryref1 () {       
+        try {
+            String json = getJsonString(getClass()
+                    .getResource("/queries/queryref1.jsonld")
+                    .getFile());
+            new KrillQuery("tokens").fromKoral(json);
+        }
+        catch (QueryException e) {
+            assertEquals(713, e.getErrorCode());
+            assertEquals("Query type is not supported", e.getMessage());
+        };
+    };
+
+    @Test
+    public void queryJSONqueryref2 () {       
+        try {
+            String json = getJsonString(getClass()
+                    .getResource("/queries/queryref2.jsonld")
+                    .getFile());
+            new KrillQuery("tokens").fromKoral(json);
+        }
+        catch (QueryException e) {
+            // assertEquals(713, e.getErrorCode());
+            assertEquals("Query type is not supported", e.getMessage());
+        };
+    };
 };
diff --git a/src/test/resources/queries/queryref1.jsonld b/src/test/resources/queries/queryref1.jsonld
new file mode 100644
index 0000000..96483d2
--- /dev/null
+++ b/src/test/resources/queries/queryref1.jsonld
@@ -0,0 +1,7 @@
+{
+  "query":{
+    "@type":"koral:queryRef",
+    "ref":"admin/example"
+  },
+  "@context":"http://korap.ids-mannheim.de/ns/koral/0.3/context.jsonld"
+}
diff --git a/src/test/resources/queries/queryref2.jsonld b/src/test/resources/queries/queryref2.jsonld
new file mode 100644
index 0000000..ade1992
--- /dev/null
+++ b/src/test/resources/queries/queryref2.jsonld
@@ -0,0 +1,29 @@
+{
+  "@context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "koral:group",
+    "operation" : "operation:sequence",
+    "operands" : [
+      {
+        "@type" : "koral:token",
+        "wrap" : {
+          "@type" : "koral:term",
+          "foundry" : "tt",
+          "key" : "NN",
+          "layer" : "p"
+        }
+	    },
+      {
+        "@type" : "koral:queryRef",
+        "ref" : "admin/example"
+      },
+      {
+        "@type" : "koral:token",
+        "wrap" : {
+          "@type" : "koral:term",
+          "key" : "Baum"
+        }
+	    }
+    ]
+  }
+}