1 files changed, 33 insertions, 0 deletions
diff --git a/chromium/components/metrics/log_decoder_unittest.cc b/chromium/components/metrics/log_decoder_unittest.cc
new file mode 100644
index 00000000000..2657c85ee4c
--- /dev/null
+++ b/chromium/components/metrics/log_decoder_unittest.cc
@@ -0,0 +1,33 @@
+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/metrics/log_decoder.h"
+
+#include <string>
+
+#include "base/macros.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/metrics_proto/chrome_user_metrics_extension.pb.h"
+#include "third_party/zlib/google/compression_utils.h"
+
+namespace metrics {
+
+TEST(LogDecoderTest, DecodeLogDataToProto) {
+  ChromeUserMetricsExtension uma_log1;
+  uma_log1.mutable_system_profile()->set_application_locale("fr");
+
+  std::string log_data1;
+  ASSERT_TRUE(uma_log1.SerializeToString(&log_data1));
+  std::string compressed_log_data;
+  ASSERT_TRUE(compression::GzipCompress(log_data1, &compressed_log_data));
+
+  ChromeUserMetricsExtension uma_log2;
+  EXPECT_TRUE(DecodeLogDataToProto(compressed_log_data, &uma_log2));
+
+  std::string log_data2;
+  uma_log2.SerializeToString(&log_data2);
+  EXPECT_EQ(log_data1, log_data2);
+}
+
+}  // namespace metrics