Add failing test when a related location is undefined

extensions/ql-vscode/test/unit-tests/sarif-processing.test.ts

@@ -720,6 +720,33 @@ describe("SARIF processing", () => {
       expectNoParsingError(result);
       expect(actualCodeSnippet).not.toBeUndefined();
     });
+
+    it("should be able to handle when a location has no uri", () => {
+      const sarif = buildValidSarifLog();
+      sarif.runs![0].results![0].message.text = "message [String](1)";
+      sarif.runs![0].results![0].relatedLocations = [
+        {
+          id: 1,
+          physicalLocation: {
+            artifactLocation: {
+              uri: "file:/modules/java.base/java/lang/String.class",
+              index: 1,
+            },
+          },
+          message: {
+            text: "String",
+          },
+        },
+      ];
+
+      const result = extractAnalysisAlerts(sarif, fakefileLinkPrefix);
+
+      const actualCodeSnippet = result.alerts[0].codeSnippet;
+
+      expect(result).toBeTruthy();
+      expectNoParsingError(result);
+      expect(actualCodeSnippet).not.toBeUndefined();
+    });
   });
 
   function expectResultParsingError(msg: string) {