Initial commit

tests/common/utils/TestUnorderedDense.cc

@@ -0,0 +1,29 @@
+#include <stdexcept>
+#include <unordered_map>
+
+#include "common/utils/RobinHood.h"
+#include "common/utils/UnorderedDense.h"
+#include "tests/GtestHelpers.h"
+
+namespace {
+
+template <class Map>
+void insertWhileHashIsZero() {
+  constexpr auto N = 1000;
+  Map map;
+  for (auto i = 0; i < N; ++i) {
+    map[i] = i;
+  }
+}
+
+TEST(TestUnorderedDense, Normal) {
+  struct Hash {
+    size_t operator()(int) const { return 0; }
+  };
+
+  insertWhileHashIsZero<ankerl::unordered_dense::map<int, int, Hash>>();
+  insertWhileHashIsZero<std::unordered_map<int, int, Hash>>();
+  ASSERT_THROW((insertWhileHashIsZero<robin_hood::unordered_map<int, int, Hash>>()), std::overflow_error);
+}
+
+}  // namespace