From f6880bff8f5faca21a2e420261d0aac258ac9eb7 Mon Sep 17 00:00:00 2001
From: Daniel Hofstetter <daniel.hofstetter@42dh.com>
Date: Sat, 14 Oct 2023 14:58:41 +0200
Subject: [PATCH] expr: test some invalid syntaxes

---
 tests/by-util/test_expr.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/tests/by-util/test_expr.rs b/tests/by-util/test_expr.rs
index 1064ef525ee..3f403c7ea37 100644
--- a/tests/by-util/test_expr.rs
+++ b/tests/by-util/test_expr.rs
@@ -275,3 +275,16 @@ fn test_invalid_substr() {
         .code_is(1)
         .stdout_only("\n");
 }
+
+#[test]
+fn test_invalid_syntax() {
+    let invalid_syntaxes = [["12", "12"], ["12", "|"], ["|", "12"]];
+
+    for invalid_syntax in invalid_syntaxes {
+        new_ucmd!()
+            .args(&invalid_syntax)
+            .fails()
+            .code_is(2)
+            .stderr_contains("syntax error");
+    }
+}