Fix for Windows

tests/helpers/mod.rs

@@ -320,8 +320,8 @@ where
     let unc_path = convert_disk_to_unc(&abs_path);
     let unc_expected = convert_disk_to_unc(&abs_expected);
 
-    let other_dir = tempdir().unwrap();
-    farm.run_without(
+    let cwd = tempdir().unwrap();
+    with_cwd(cwd).run(
         |path| {
             let actual = f(path);
             // if we ascended out of the farm rootdir it's not straightforward to verify the logical path
@@ -339,7 +339,6 @@ where
             );
         },
         unc_path.as_path(),
-        other_dir,
     );
 }
 
@@ -442,7 +441,7 @@ where
         abs_path.as_path(),
     );
 
-    test_is_real_root_with_unc_path(farm, &abs_path, expected);
+    test_is_real_root_with_unc_path(&abs_path, expected);
 }
 
 // check is_real_root() succeeds with expected, with both absolute and relative paths
@@ -464,25 +463,24 @@ where
 }
 
 #[cfg(target_family = "windows")]
-fn test_is_real_root_with_unc_path<P>(farm: &LinkFarm, abs_path: P, expected: bool)
+fn test_is_real_root_with_unc_path<P>(abs_path: P, expected: bool)
 where
     P: AsRef<Path> + Debug,
 {
     let unc_path = convert_disk_to_unc(&abs_path);
 
-    let other_dir = tempdir().unwrap();
-    farm.run_without(
+    let cwd = tempdir().unwrap();
+    with_cwd(cwd).run(
         |path| {
             let actual = path.is_real_root();
             is_expected_ok(unc_path.as_path(), actual, expected);
         },
         unc_path.as_path(),
-        other_dir,
     );
 }
 
 #[cfg(target_family = "unix")]
-fn test_is_real_root_with_unc_path<P>(_farm: &LinkFarm, _abs_path: P, _expected: bool)
+fn test_is_real_root_with_unc_path<P>(_abs_path: P, _expected: bool)
 where
     P: AsRef<Path> + Debug,
 {