fix(test): test delete Windows registry accidently

src/cli/self_update.rs

@@ -90,9 +90,12 @@ mod windows;
 #[cfg(windows)]
 pub use windows::complete_windows_uninstall;
 #[cfg(all(windows, feature = "test"))]
-pub use windows::{RegistryGuard, RegistryValueId, USER_PATH, get_path};
+pub use windows::{
+    RUSTUP_TEST_REGISTRY_UUID, RegistryGuard, RegistryValueId, USER_PATH, get_path,
+    test_registry_uuid,
+};
 #[cfg(windows)]
-use windows::{do_add_to_path, do_remove_from_path};
+use windows::{do_add_to_path, do_add_to_programs, do_remove_from_path, do_remove_from_programs};
 #[cfg(windows)]
 pub(crate) use windows::{run_update, self_replace};
 
@@ -1010,6 +1013,9 @@ async fn maybe_install_rust(opts: InstallOpts<'_>, cfg: &mut Cfg<'_>) -> Result<
         do_add_to_path(cfg.process)?;
     }
 
+    #[cfg(windows)]
+    do_add_to_programs(cfg.process)?;
+
     // If RUSTUP_HOME is not set, make sure it exists
     if cfg.process.var_os("RUSTUP_HOME").is_none() {
         let home = cfg
@@ -1159,6 +1165,9 @@ fn clean_cargo_home(no_modify_path: bool, process: &Process) -> Result<()> {
 
     utils::remove_file("rustup_bin", &rustup_path)?;
 
+    #[cfg(windows)]
+    do_remove_from_programs()?;
+
     let cargo_bin_display = cargo_bin.display();
     info!("removing empty cargo bin directory `{cargo_bin_display}`");