package webhook

import "testing"

func TestSign(t *testing.T) {
	if Sign("", []byte("hello")) != "" {
		t.Error("empty secret should return empty signature")
	}
	sig := Sign("supersecret", []byte("hello"))
	if len(sig) != 64 {
		t.Errorf("expected 64-char hex hmac, got %d: %q", len(sig), sig)
	}
	again := Sign("supersecret", []byte("hello"))
	if sig != again {
		t.Error("signature should be deterministic")
	}
	other := Sign("different", []byte("hello"))
	if sig == other {
		t.Error("different secret should produce different signature")
	}
}