1 files changed, 22 insertions, 0 deletions
diff --git a/clap/tests/unique_args.rs b/clap/tests/unique_args.rs
new file mode 100644
index 0000000..8710248
--- /dev/null
+++ b/clap/tests/unique_args.rs
@@ -0,0 +1,22 @@
+extern crate clap;
+
+use clap::{App, Arg};
+
+#[test]
+#[should_panic]
+fn unique_arg_names() {
+    App::new("some").args(&[Arg::with_name("arg").short("a"), Arg::with_name("arg").short("b")]);
+}
+
+#[test]
+#[should_panic]
+fn unique_arg_shorts() {
+    App::new("some").args(&[Arg::with_name("arg1").short("a"), Arg::with_name("arg2").short("a")]);
+}
+
+#[test]
+#[should_panic]
+fn unique_arg_longs() {
+    App::new("some")
+        .args(&[Arg::with_name("arg1").long("long"), Arg::with_name("arg2").long("long")]);
+}