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diff --git a/pw_fuzzer/examples/fuzztest/metrics_unittest.cc b/pw_fuzzer/examples/fuzztest/metrics_unittest.cc
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+++ b/pw_fuzzer/examples/fuzztest/metrics_unittest.cc
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+// Copyright 2023 The Pigweed Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+#include "metrics.h"
+
+#include <algorithm>
+
+#include "gtest/gtest.h"
+
+namespace pw::fuzzer::examples {
+
+// DOCSTAG: [pwfuzzer_examples_fuzztest-metrics_unittest]
+TEST(MetricsTest, SerializeAndDeserialize) {
+  std::array<std::byte, Metrics::kMaxSerializedSize> buffer;
+
+  // Add and copy the names only.
+  Metrics src, dst;
+  EXPECT_TRUE(src.SetValue("one", 0).ok());
+  EXPECT_TRUE(src.SetValue("two", 0).ok());
+  EXPECT_TRUE(src.SetValue("three", 0).ok());
+  EXPECT_TRUE(dst.SetMetrics(src.GetMetrics()).ok());
+
+  // Modify the values.
+  EXPECT_TRUE(src.SetValue("one", 1).ok());
+  EXPECT_TRUE(src.SetValue("two", 2).ok());
+  EXPECT_TRUE(src.SetValue("three", 3).ok());
+
+  // Transfer the data and check.
+  EXPECT_TRUE(src.Serialize(buffer).ok());
+  EXPECT_TRUE(dst.Deserialize(buffer).ok());
+  EXPECT_EQ(dst.GetValue("one").value_or(0), 1U);
+  EXPECT_EQ(dst.GetValue("two").value_or(0), 2U);
+  EXPECT_EQ(dst.GetValue("three").value_or(0), 3U);
+}
+
+TEST(MetricsTest, DeserializeDoesNotCrash) {
+  std::array<std::byte, Metrics::kMaxSerializedSize> buffer;
+  std::fill(buffer.begin(), buffer.end(), std::byte(0x5C));
+
+  // Just make sure this does not crash.
+  Metrics dst;
+  dst.Deserialize(buffer).IgnoreError();
+}
+// DOCSTAG: [pwfuzzer_examples_fuzztest-metrics_unittest]
+
+}  // namespace pw::fuzzer::examples