Allow redirection of url to local resources

inspector-vc/src/test/java/org/oneedtech/inspect/vc/util/CachingDocumentLoaderTests.java

@@ -1,27 +1,47 @@
 package org.oneedtech.inspect.vc.util;
 
 import java.net.URI;
+import java.net.URL;
+import java.util.Map;
 
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 import com.apicatalog.jsonld.document.Document;
+import com.apicatalog.jsonld.document.JsonDocument;
 import com.apicatalog.jsonld.loader.DocumentLoader;
 import com.apicatalog.jsonld.loader.DocumentLoaderOptions;
+import com.google.common.io.Resources;
 
 public class CachingDocumentLoaderTests {
 
 	@Test
 	void testStaticCachedDocumentBundled() {
 		Assertions.assertDoesNotThrow(()->{
-			DocumentLoader loader = new CachingDocumentLoader();			
+			DocumentLoader loader = new CachingDocumentLoader();
 			for(String id : CachingDocumentLoader.bundled.keySet()) {
 				Document doc = loader.loadDocument(new URI(id), new DocumentLoaderOptions());
-				Assertions.assertNotNull(doc);	
-			}						
+				Assertions.assertNotNull(doc);
+			}
 		});
 	}
-	
+
+	@Test
+	void testLocalDomainCachedDocument() {
+		Assertions.assertDoesNotThrow(()->{
+			Map<URI, String> localDomains = Map.of(new URI("http://example.org/"), "ob20");
+			DocumentLoader loader = new CachingDocumentLoader(localDomains);
+			URI uri = new URI("http://example.org/basic-assertion.json");
+			Document doc = loader.loadDocument(uri, new DocumentLoaderOptions());
+			Assertions.assertNotNull(doc);
+
+			// assert the returned document is the same as the local resource
+			URL resource = Resources.getResource("ob20/basic-assertion.json");
+			JsonDocument resourceDocument = JsonDocument.of(resource.openStream());
+			Assertions.assertEquals(resourceDocument.getJsonContent().toString(), doc.getJsonContent().toString());
+		});
+	}
+
 	@Test
 	void testStaticCachedDocumentKey() {
 		Assertions.assertDoesNotThrow(()->{
@@ -30,5 +50,5 @@ public class CachingDocumentLoaderTests {
 			Document doc = loader.loadDocument(uri, new DocumentLoaderOptions());
 			Assertions.assertNotNull(doc);
 		});
-	}	
+	}
 }