diff --git a/tests/compile-fail/fs/isolated_file.rs b/tests/compile-fail/fs/isolated_file.rs
new file mode 100644
index 0000000000..5b7270f189
--- /dev/null
+++ b/tests/compile-fail/fs/isolated_file.rs
@@ -0,0 +1,6 @@
+// ignore-windows: File handling is not implemented yet
+// error-pattern: `open` not available when isolation is enabled
+
+fn main() {
+    let _file = std::fs::File::open("file.txt").unwrap();
+}