Fixed interation tests. Fixed return types to only return a graph when requested

Author: bharath181

src/lib.rs

@@ -43,7 +43,7 @@ pub fn json_to_rdf(
     file_path: &String,
     namespace: &Option<String>,
     output_file: &Option<String>,
-) -> Result<Graph, Error> {
+) -> Result<Option<Graph>, Error> {
     let rdf_namespace: String = if namespace.is_some() {
         namespace.clone().unwrap()
     } else {
@@ -112,9 +112,9 @@ pub fn json_to_rdf(
             .expect("Error opening file");
 
         writeln!(file, "{}", graph).expect("Error writing json2rdf data to file");
-        Ok(graph)
+        Ok(None)
     } else {
-        return Ok(graph);
+        return Ok(Some(graph));
     }
 }
 

tests/integration_test.rs

@@ -6,8 +6,7 @@ fn test_graph_triple_count() {
 
     match triple_count_string {
         Ok(res) => {
-            println!("Graph created with {} triples", res.len());
-            assert_eq!(res.len(), 23)
+            assert_eq!(res.unwrap().len(), 23)
         }
         Err(e) => eprintln!("Error writing: {}", e),
     }