From e6918187568dbd01842d8d1d2c808ce16a894239 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 21 Apr 2024 13:54:28 +0200
Subject: Adding upstream version 18.2.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/rocksdb/monitoring/statistics_test.cc | 92 +++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 src/rocksdb/monitoring/statistics_test.cc

(limited to 'src/rocksdb/monitoring/statistics_test.cc')

diff --git a/src/rocksdb/monitoring/statistics_test.cc b/src/rocksdb/monitoring/statistics_test.cc
new file mode 100644
index 000000000..cffa5054a
--- /dev/null
+++ b/src/rocksdb/monitoring/statistics_test.cc
@@ -0,0 +1,92 @@
+//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+//
+
+#include "rocksdb/statistics.h"
+
+#include "port/stack_trace.h"
+#include "rocksdb/convenience.h"
+#include "rocksdb/utilities/options_type.h"
+#include "test_util/testharness.h"
+#include "test_util/testutil.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+class StatisticsTest : public testing::Test {};
+
+// Sanity check to make sure that contents and order of TickersNameMap
+// match Tickers enum
+TEST_F(StatisticsTest, SanityTickers) {
+  EXPECT_EQ(static_cast<size_t>(Tickers::TICKER_ENUM_MAX),
+            TickersNameMap.size());
+
+  for (uint32_t t = 0; t < Tickers::TICKER_ENUM_MAX; t++) {
+    auto pair = TickersNameMap[static_cast<size_t>(t)];
+    ASSERT_EQ(pair.first, t) << "Miss match at " << pair.second;
+  }
+}
+
+// Sanity check to make sure that contents and order of HistogramsNameMap
+// match Tickers enum
+TEST_F(StatisticsTest, SanityHistograms) {
+  EXPECT_EQ(static_cast<size_t>(Histograms::HISTOGRAM_ENUM_MAX),
+            HistogramsNameMap.size());
+
+  for (uint32_t h = 0; h < Histograms::HISTOGRAM_ENUM_MAX; h++) {
+    auto pair = HistogramsNameMap[static_cast<size_t>(h)];
+    ASSERT_EQ(pair.first, h) << "Miss match at " << pair.second;
+  }
+}
+
+TEST_F(StatisticsTest, NoNameStats) {
+  static std::unordered_map<std::string, OptionTypeInfo> no_name_opt_info = {
+#ifndef ROCKSDB_LITE
+      {"inner",
+       OptionTypeInfo::AsCustomSharedPtr<Statistics>(
+           0, OptionVerificationType::kByName,
+           OptionTypeFlags::kAllowNull | OptionTypeFlags::kCompareNever)},
+#endif  // ROCKSDB_LITE
+  };
+
+  class DefaultNameStatistics : public Statistics {
+   public:
+    DefaultNameStatistics(const std::shared_ptr<Statistics>& stats = nullptr)
+        : inner(stats) {
+      RegisterOptions("", &inner, &no_name_opt_info);
+    }
+
+    uint64_t getTickerCount(uint32_t /*tickerType*/) const override {
+      return 0;
+    }
+    void histogramData(uint32_t /*type*/,
+                       HistogramData* const /*data*/) const override {}
+    void recordTick(uint32_t /*tickerType*/, uint64_t /*count*/) override {}
+    void setTickerCount(uint32_t /*tickerType*/, uint64_t /*count*/) override {}
+    uint64_t getAndResetTickerCount(uint32_t /*tickerType*/) override {
+      return 0;
+    }
+    std::shared_ptr<Statistics> inner;
+  };
+  ConfigOptions options;
+  options.ignore_unsupported_options = false;
+  auto stats = std::make_shared<DefaultNameStatistics>();
+  ASSERT_STREQ(stats->Name(), "");
+#ifndef ROCKSDB_LITE
+  ASSERT_EQ("", stats->ToString(
+                    options));  // A stats with no name with have no options...
+  ASSERT_OK(stats->ConfigureFromString(options, "inner="));
+  ASSERT_EQ("", stats->ToString(
+                    options));  // A stats with no name with have no options...
+  ASSERT_NE(stats->inner, nullptr);
+  ASSERT_NE("", stats->inner->ToString(options));  // ... even if it does...
+#endif                                             // ROCKSDB_LITE
+}
+}  // namespace ROCKSDB_NAMESPACE
+
+int main(int argc, char** argv) {
+  ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
-- 
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