throw when schema is not registered

Author: hauner

json-schema-validator/src/main/java/io/openapiprocessor/jsonschema/schema/NotRegisteredException.java

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2024 https://github.com/openapi-processor/openapi-parser
+ * PDX-License-Identifier: Apache-2.0
+ */
+
+package io.openapiprocessor.jsonschema.schema;
+
+import java.net.URI;
+
+public class NotRegisteredException extends RuntimeException {
+    public NotRegisteredException(URI schemaUri) {
+        super(String.format("Schema %s is not registered in the SchemaStore", schemaUri));
+    }
+}

json-schema-validator/src/main/java/io/openapiprocessor/jsonschema/schema/SchemaStore.java

@@ -181,8 +181,7 @@ public JsonSchema getSchema (URI schemaUri, SchemaVersion version) {
 
         Object document = documents.get (schemaUri);
         if (document == null) {
-            // todo NotRegisteredException
-            throw new RuntimeException ();
+            throw new NotRegisteredException (schemaUri);
         }
 
         // create schema

json-schema-validator/src/test/kotlin/io/openapiprocessor/jsonschema/schema/SchemaStoreSpec.kt

@@ -5,9 +5,20 @@
 
 package io.openapiprocessor.jsonschema.schema
 
+import io.kotest.assertions.throwables.shouldThrow
 import io.kotest.core.spec.style.StringSpec
+import io.mockk.mockk
+import io.openapiprocessor.jsonschema.support.Uris
 
 class SchemaStoreSpec: StringSpec({
 
+        "throws when requesting a json schema from an un-registered uri" {
+            val loader = mockk<DocumentLoader>()
+            val store = SchemaStore(loader)
+
+            shouldThrow<NotRegisteredException> {
+                store.getSchema(Uris.createUri("https://some.scheam.uri"))
+            }
+        }
 
 })