Add a test

src/test/converter2/issues/gh2495.ts

@@ -0,0 +1,9 @@
+export interface IAnimal {
+    name: number;
+}
+
+export interface IFish extends IAnimal {
+    maxDepth: number;
+}
+
+export class IFish implements IFish {}

src/test/issues.c2.test.ts

@@ -28,6 +28,7 @@ import {
 } from "./programs";
 import { TestLogger } from "./TestLogger";
 import { getComment, getLinks, query, querySig } from "./utils";
+import { DefaultTheme, PageEvent } from "..";
 
 const base = getConverter2Base();
 const app = getConverter2App();
@@ -1372,4 +1373,14 @@ describe("Issue Tests", () => {
 
         equal(project.children[0].children?.map((c) => c.name), ["Options"]);
     });
+
+    it("Does not crash when rendering recursive hierarchy, #2495", () => {
+        const project = convert();
+
+        const theme = new DefaultTheme(app.renderer);
+        const page = new PageEvent("hierarchy", project);
+        page.project = project;
+        const context = theme.getRenderContext(page);
+        context.hierarchyTemplate(page);
+    });
 });