From 478506b132728c7d2d660dd5ffd630f905bf8e41 Mon Sep 17 00:00:00 2001
From: hi-rustin <rustin.liu@gmail.com>
Date: Sat, 7 Oct 2023 20:21:07 +0800
Subject: [PATCH] Add test for unsupported short unstable feature flag

Signed-off-by: hi-rustin <rustin.liu@gmail.com>
---
 tests/testsuite/build.rs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/tests/testsuite/build.rs b/tests/testsuite/build.rs
index bd4b43b4266f..232ad7ee42cd 100644
--- a/tests/testsuite/build.rs
+++ b/tests/testsuite/build.rs
@@ -244,6 +244,31 @@ fn cargo_compile_directory_not_cwd() {
     assert!(p.bin("foo").is_file());
 }
 
+#[cargo_test]
+fn cargo_compile_with_unsupported_short_unstable_feature_flag() {
+    let p = project()
+        .file("Cargo.toml", &basic_bin_manifest("foo"))
+        .file("src/foo.rs", &main_file(r#""i am foo""#, &[]))
+        .file(".cargo/config.toml", &"")
+        .build();
+
+    p.cargo("-zunstable-options -C foo build")
+        .masquerade_as_nightly_cargo(&["chdir"])
+        .cwd(p.root().parent().unwrap())
+        .with_stderr(
+            "\
+error: unexpected argument '-z' found
+
+Usage: cargo[EXE] [+toolchain] [OPTIONS] [COMMAND]
+       cargo [+toolchain] [OPTIONS] -Zscript <MANIFEST_RS> [ARGS]...
+
+For more information, try '--help'.
+",
+        )
+        .with_status(1)
+        .run();
+}
+
 #[cargo_test]
 fn cargo_compile_directory_not_cwd_with_invalid_config() {
     let p = project()