diff --git a/Makefile b/Makefile
index e8e02d08f..b46a86187 100644
--- a/Makefile
+++ b/Makefile
@@ -137,6 +137,7 @@ TEST_PROGS  := \
   nl \
   seq \
   sort \
+  test \
   tr \
   truncate \
   unexpand
diff --git a/test/test.rs b/test/test.rs
new file mode 100644
index 000000000..18eab2996
--- /dev/null
+++ b/test/test.rs
@@ -0,0 +1,29 @@
+use std::io::process::Command;
+
+static EXE: &'static str = "./test";
+
+#[test]
+fn test_op_prec_and_or_1() {
+    let status = Command::new(EXE).arg(" ").arg("-o").arg("").arg("-a").arg("").status();
+    assert_eq!(true, status.unwrap().success());
+}
+
+#[test]
+fn test_op_prec_and_or_2() {
+    let status = Command::new(EXE).arg("")
+                                   .arg("-a")
+                                   .arg("")
+                                   .arg("-o")
+                                   .arg(" ")
+                                   .arg("-a")
+                                   .arg(" ")
+                                   .status();
+    assert_eq!(true, status.unwrap().success());
+}
+
+#[test]
+fn test_or_as_filename() {
+    let status = Command::new(EXE).arg("x").arg("-a").arg("-z").arg("-o").status();
+    assert!(status.unwrap().matches_exit_status(1));
+}
+