add test

crates/nu-parser/tests/test_lex.rs

@@ -187,6 +187,13 @@ fn lex_incomplete_quote() {
     assert!(matches!(err, ParseError::UnexpectedEof(v, _) if v == "'"));
 }
 
+#[test]
+fn lex_odd_string_interpolations() {
+    let file = b"$\"('\"')\"";
+    let output = lex(file, 0, &[], &[], true);
+    assert!(output.1.is_none());
+}
+
 #[test]
 fn lex_comments_no_space() {
     // test for parses that contain tokens that normally introduce comments