Add test

cli/doc/tests.rs

@@ -1605,3 +1605,24 @@ export namespace Deno {
   let found = find_nodes_by_name_recursively(entries, "a.b.c".to_string());
   assert_eq!(found.len(), 0);
 }
+
+mod printer_tests {
+  use super::*;
+
+  #[tokio::test]
+  async fn generic_instantiated_with_tuple_type() {
+    let source_code = r#"
+interface Generic<T> {}
+export function f(): Generic<[string, number]> { return {}; }
+      "#;
+
+    let loader =
+      TestLoader::new(vec![("test.ts".to_string(), source_code.to_string())]);
+    let entries = DocParser::new(loader).parse("test.ts").await.unwrap();
+
+    assert!(colors::strip_ansi_codes(
+      crate::doc::printer::format(entries).as_str()
+    )
+    .contains("Generic<[string, number]>"))
+  }
+}