diff --git a/rust-cargo.el b/rust-cargo.el
index d323b5d..35187c1 100644
--- a/rust-cargo.el
+++ b/rust-cargo.el
@@ -129,10 +129,16 @@ output buffer will be in comint mode, i.e. interactive."
   (interactive "P")
   (rust--compile comint "%s run --release" rust-cargo-bin))
 
-(defun rust-test ()
-  "Test using `cargo test`"
-  (interactive)
-  (rust--compile nil "%s test %s" rust-cargo-bin rust-cargo-default-arguments))
+(defun rust-test (&optional arg)
+  "Test using `cargo test`.
+If prefixed with `C-u`, pass additional arguments to the command (from a string read from the minibuffer)."
+  (interactive "P")
+  (let ((test-command (if arg
+                          (concat "%s test "
+                            (read-string "Enter Arguments: ") " %s")
+                          "%s test %s"
+                        "%s test %s")))
+    (rust--compile nil test-command rust-cargo-bin rust-cargo-default-arguments)))
 
 (defun rust-run-clippy ()
   "Run `cargo clippy'."