test(env): add tests for default fish config detection

Author: mst-mkt

crates/vite_global_cli/src/commands/env/doctor.rs

@@ -764,6 +764,70 @@ mod tests {
         assert!(result.is_none(), "Should return None when all paths are bypassed");
     }
 
+    #[cfg(not(windows))]
+    struct ProfileEnvGuard {
+        original_home: Option<std::ffi::OsString>,
+    }
+
+    #[cfg(not(windows))]
+    impl ProfileEnvGuard {
+        fn new(home: &std::path::Path) -> Self {
+            let guard = Self {
+                original_home: std::env::var_os("HOME"),
+            };
+            unsafe {
+                std::env::set_var("HOME", home);
+            }
+            guard
+        }
+    }
+
+    #[cfg(not(windows))]
+    impl Drop for ProfileEnvGuard {
+        fn drop(&mut self) {
+            unsafe {
+                match &self.original_home {
+                    Some(v) => std::env::set_var("HOME", v),
+                    None => std::env::remove_var("HOME"),
+                }
+            }
+        }
+    }
+
+    #[test]
+    #[serial]
+    #[cfg(not(windows))]
+    fn test_check_profile_files_default_fish_config() {
+        let temp = TempDir::new().unwrap();
+        let fake_home = temp.path().join("home");
+        std::fs::create_dir_all(&fake_home).unwrap();
+
+        let fish_dir = fake_home.join(".config/fish/conf.d");
+        std::fs::create_dir_all(&fish_dir).unwrap();
+        std::fs::write(fish_dir.join("vite-plus.fish"), "source \"$HOME/.vite-plus/env.fish\"\n")
+            .unwrap();
+
+        let _guard = ProfileEnvGuard::new(&fake_home);
+
+        let result = check_profile_files("$HOME/.vite-plus");
+        assert!(result.is_some(), "Should find vite-plus.fish in default fish conf.d");
+        assert!(result.unwrap().contains("vite-plus.fish"));
+    }
+
+    #[test]
+    #[serial]
+    #[cfg(not(windows))]
+    fn test_check_profile_files_no_fish_config() {
+        let temp = TempDir::new().unwrap();
+        let fake_home = temp.path().join("home");
+        std::fs::create_dir_all(&fake_home).unwrap();
+
+        let _guard = ProfileEnvGuard::new(&fake_home);
+
+        let result = check_profile_files("$HOME/.vite-plus");
+        assert_eq!(result, None);
+    }
+
     #[test]
     fn test_abbreviate_home() {
         if let Ok(home) = std::env::var("HOME") {