1 files changed, 17 insertions, 4 deletions
diff --git a/libk/test/quicksort.cc b/libk/test/quicksort.cc
index 582e49e..7a25c08 100644
--- a/libk/test/quicksort.cc
+++ b/libk/test/quicksort.cc
@@ -1,9 +1,14 @@
 #include <stdlib/quicksort.h>
 
-constexpr bool is_sorted(int a[], size_t from, size_t to) {
+constexpr bool is_sorted_asc(int a[], size_t from, size_t to) {
   for (; from < to - 1; ++from)
-    if (a[from] > a[from + 1])
-      return false;
+    if (a[from] > a[from + 1]) return false;
+  return true;
+}
+
+constexpr bool is_sorted_desc(int a[], size_t from, size_t to) {
+  for (; from < to - 1; ++from)
+    if (a[from] < a[from + 1]) return false;
   return true;
 }
 
@@ -12,5 +17,13 @@ static_assert([]() {
   const size_t a_len = sizeof(a) / sizeof(int);
 
   qsort(a, 0, a_len - 1);
-  return is_sorted(a, 0, a_len - 1);
+  return is_sorted_asc(a, 0, a_len - 1);
+}());
+
+static_assert([]() {
+  int a[] = {12, 82, 347, 92, 74, 123, 0, 56};
+  const size_t a_len = sizeof(a) / sizeof(int);
+
+  qsort<int, SortOrder::Descending>(a, 0, a_len - 1);
+  return is_sorted_desc(a, 0, a_len - 1);
 }());