expr: add missing tests

uutils · Jan 11, 2025 · b241602 · b241602
1 parent e7f6b23
commit b241602
Showing 1 changed file with 15 additions and 0 deletions.
diff --git a/tests/by-util/test_expr.rs b/tests/by-util/test_expr.rs
@@ -102,6 +102,21 @@ fn test_complex_arithmetic() {
         .stderr_only("expr: division by zero\n");
 }
 
+#[test]
+fn test_missing_argument() {
+    new_ucmd!()
+        .args(&["2", "+"])
+        .fails()
+        .code_is(2)
+        .stderr_only("expr: syntax error: missing argument after '+'\n");
+
+    new_ucmd!()
+        .args(&["length"])
+        .fails()
+        .code_is(2)
+        .stderr_only("expr: syntax error: missing argument after 'length'\n");
+}
+
 #[test]
 fn test_parenthesis() {
     new_ucmd!()