std: tests: env: Add split_paths_uefi

- Add test for split_paths for UEFI target.
- `;` is the path separator. Escaping is not supported.

Signed-off-by: Ayush Singh <ayush@beagleboard.org>

Author: Ayush1325

library/std/tests/env.rs

@@ -59,6 +59,23 @@ fn split_paths_unix() {
     assert!(check_parse("/:/usr/local", &mut ["/", "/usr/local"]));
 }
 
+#[test]
+#[cfg(target_os = "uefi")]
+fn split_paths_uefi() {
+    use std::path::PathBuf;
+
+    fn check_parse(unparsed: &str, parsed: &[&str]) -> bool {
+        split_paths(unparsed).collect::<Vec<_>>()
+            == parsed.iter().map(|s| PathBuf::from(*s)).collect::<Vec<_>>()
+    }
+
+    assert!(check_parse("", &mut [""]));
+    assert!(check_parse(";;", &mut ["", "", ""]));
+    assert!(check_parse(r"fs0:\", &mut [r"fs0:\"]));
+    assert!(check_parse(r"fs0:\;", &mut [r"fs0:\", ""]));
+    assert!(check_parse(r"fs0:\;fs0:\boot\", &mut [r"fs0:\", r"fs0:\boot\"]));
+}
+
 #[test]
 #[cfg(unix)]
 fn join_paths_unix() {