fix: restrict sync_help tests to unix only

Co-authored-by: KSXGitHub <11488886+KSXGitHub@users.noreply.github.com>

Author: Copilot

tests/sync_help.rs

@@ -1,48 +1,39 @@
+//! The following tests check whether the help text files are outdated.
+//!
+//! If the tests fail, run `./generate-completions.sh` on the root of the repo to update the help files.
+
+// Since the CLI in Windows look a little different, and I am way too lazy to make two versions
+// of help files, the following tests would only run in UNIX-like environment.
+#![cfg(unix)]
 #![cfg(feature = "cli")]
 
 pub mod _utils;
 pub use _utils::*;
 
 use command_extra::CommandExtra;
 use pipe_trait::Pipe;
-use std::{
-    fs,
-    path::PathBuf,
-    process::{Command, Stdio},
-};
-
-fn exports_dir() -> PathBuf {
-    PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("exports")
-}
+use std::process::{Command, Stdio};
 
-fn pdu_help(long: bool) -> String {
-    let flag = if long { "--help" } else { "-h" };
-    Command::new(PDU)
-        .with_arg(flag)
-        .with_stdin(Stdio::null())
-        .with_stdout(Stdio::piped())
-        .with_stderr(Stdio::null())
-        .output()
-        .unwrap_or_else(|error| panic!("failed to spawn pdu {flag}: {error}"))
-        .pipe(stdout_text)
+macro_rules! check {
+    ($name:ident: $flag:literal => $path:literal) => {
+        #[test]
+        fn $name() {
+            let actual = Command::new(PDU)
+                .with_arg($flag)
+                .with_stdin(Stdio::null())
+                .with_stdout(Stdio::piped())
+                .with_stderr(Stdio::null())
+                .output()
+                .expect("get actual help text")
+                .pipe(stdout_text);
+            let expected = include_str!($path);
+            assert!(
+                actual == expected.trim_end(),
+                "help text is outdated, run ./generate-completions.sh to update it",
+            );
+        }
+    };
 }
 
-#[test]
-fn long_help_is_up_to_date() {
-    let actual = pdu_help(true);
-    let expected = fs::read_to_string(exports_dir().join("long.help"))
-        .expect("read exports/long.help")
-        .trim_end()
-        .to_string();
-    assert_eq!(actual, expected);
-}
-
-#[test]
-fn short_help_is_up_to_date() {
-    let actual = pdu_help(false);
-    let expected = fs::read_to_string(exports_dir().join("short.help"))
-        .expect("read exports/short.help")
-        .trim_end()
-        .to_string();
-    assert_eq!(actual, expected);
-}
+check!(long_help_is_up_to_date: "--help" => "../exports/long.help");
+check!(short_help_is_up_to_date: "-h" => "../exports/short.help");