1 files changed, 35 insertions, 0 deletions
diff --git a/src/jaegertracing/opentelemetry-cpp/sdk/test/common/random_test.cc b/src/jaegertracing/opentelemetry-cpp/sdk/test/common/random_test.cc
new file mode 100644
index 000000000..35cfd4a1e
--- /dev/null
+++ b/src/jaegertracing/opentelemetry-cpp/sdk/test/common/random_test.cc
@@ -0,0 +1,35 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#include "src/common/random.h"
+
+#include <algorithm>
+#include <iterator>
+
+#include <gtest/gtest.h>
+using opentelemetry::sdk::common::Random;
+
+TEST(RandomTest, GenerateRandom64)
+{
+  EXPECT_NE(Random::GenerateRandom64(), Random::GenerateRandom64());
+}
+
+TEST(RandomTest, GenerateRandomBuffer)
+{
+  uint8_t buf1[8] = {0};
+  uint8_t buf2[8] = {0};
+  Random::GenerateRandomBuffer(buf1);
+  Random::GenerateRandomBuffer(buf2);
+  EXPECT_FALSE(std::equal(std::begin(buf1), std::end(buf1), std::begin(buf2)));
+
+  // Edge cases.
+  for (auto size : {7, 8, 9, 16, 17})
+  {
+    std::vector<uint8_t> buf1(size);
+    std::vector<uint8_t> buf2(size);
+
+    Random::GenerateRandomBuffer(buf1);
+    Random::GenerateRandomBuffer(buf2);
+    EXPECT_FALSE(std::equal(std::begin(buf1), std::end(buf1), std::begin(buf2)));
+  }
+}