From 0840eb9272ad4f97f17959b7891ad310a803d511 Mon Sep 17 00:00:00 2001
From: Sam Fredrickson <samfredrickson@gmail.com>
Date: Fri, 3 Mar 2023 22:34:58 -0800
Subject: [PATCH] Add test for invalid priority levels to npq.

---
 npq/lib_test.go | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/npq/lib_test.go b/npq/lib_test.go
index e74f0e1..026a701 100644
--- a/npq/lib_test.go
+++ b/npq/lib_test.go
@@ -48,6 +48,26 @@ func TestSendClosedPanic(t *testing.T) {
 	q.Send(1, 1)
 }
 
+func TestTooLowPriorityPanic(t *testing.T) {
+	testInvalidPriorityPanic(t, 0)
+}
+
+func TestTooHighPriorityPanic(t *testing.T) {
+	testInvalidPriorityPanic(t, 3)
+}
+
+func testInvalidPriorityPanic(t *testing.T, invalid int) {
+	t.Parallel()
+	defer func() {
+		if r := recover(); r == nil {
+			t.Errorf("sending with invalid priority did not panic")
+		}
+	}()
+	q := npq.Make[int, int](4, 1, 2)
+	q.Send(invalid, 1)
+
+}
+
 func TestRecvClosed(t *testing.T) {
 	t.Parallel()
 	q := npq.Make[int, int](4, 1, 2)