1 files changed, 19 insertions, 0 deletions
diff --git a/tdutils/test/WaitFreeHashSet.cpp b/tdutils/test/WaitFreeHashSet.cpp
index d14d4c49f..4c6c03698 100644
--- a/tdutils/test/WaitFreeHashSet.cpp
+++ b/tdutils/test/WaitFreeHashSet.cpp
@@ -71,3 +71,22 @@ TEST(WaitFreeHashSet, stress_test) {
     }
   }
 }
+
+TEST(WaitFreeHashSet, remove_if) {
+  td::WaitFreeHashSet<td::uint64> set;
+  bool is_removed;
+  for (td::uint64 i = 0; i < 10000; i++) {
+    set.insert(2 * i + 1);
+    set.insert(2 * i + 2);
+    is_removed = set.remove_if([i](const auto &num) { return num <= i; });
+    CHECK(!is_removed);
+    CHECK(set.calc_size() == i + 2);
+    is_removed = set.remove_if([i](const auto &num) { return num <= i + 1; });
+    CHECK(is_removed);
+    CHECK(set.calc_size() == i + 1);
+  }
+  is_removed = set.remove_if([](const auto &num) { return num <= 19999; });
+  CHECK(set.calc_size() == 1);
+  is_removed = set.remove_if([](const auto &num) { return num <= 20000; });
+  CHECK(set.calc_size() == 0);
+}