Feature: add unit-testing building rules for trpc/util/algorithm (#120)

trpc/util/algorithm/BUILD

@@ -12,6 +12,15 @@ cc_library(
     ],
 )
 
+cc_test(
+    name = "power_of_two_test",
+    srcs = ["power_of_two_test.cc"],
+    deps = [
+        ":power_of_two",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
 cc_library(
     name = "random",
     hdrs = ["random.h"],
@@ -25,3 +34,12 @@ cc_library(
         "//trpc/util/log:logging",
     ],
 )
+
+cc_test(
+    name = "hash_test",
+    srcs = ["hash_test.cc"],
+    deps = [
+        ":hash",
+        "@com_google_googletest//:gtest_main",
+    ],
+)

trpc/util/algorithm/hash_test.cc

@@ -0,0 +1,30 @@
+//
+//
+// Tencent is pleased to support the open source community by making tRPC available.
+//
+// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// All rights reserved.
+//
+// If you have downloaded a copy of the tRPC source code from Tencent,
+// please note that tRPC source code is licensed under the  Apache 2.0 License,
+// A copy of the Apache 2.0 License is included in this file.
+//
+//
+
+#include "trpc/util/algorithm/hash.h"
+
+#include "gtest/gtest.h"
+
+namespace trpc::testing {
+
+TEST(GetHashIndex, All) {
+  std::uint64_t key = 10;
+  std::uint64_t mod = 8;
+  std::size_t ret = GetHashIndex(key, mod);
+  ASSERT_LE(ret, mod);
+  // Test case: mod is 0.
+  mod = 0;
+  ASSERT_DEATH(GetHashIndex(key, mod), "");
+}
+
+}  // namespace trpc::testing