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diff --git a/third_party/aom/test/segment_binarization_sync.cc b/third_party/aom/test/segment_binarization_sync.cc
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+/*
+ * Copyright (c) 2018, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+#include "test/acm_random.h"
+
+using libaom_test::ACMRandom;
+
+extern "C" {
+int av1_neg_interleave(int x, int ref, int max);
+int av1_neg_deinterleave(int diff, int ref, int max);
+}
+
+namespace {
+
+struct Segment {
+ int id;
+ int pred;
+ int last_id;
+};
+
+Segment GenerateSegment(int seed) {
+ static const int MAX_SEGMENTS = 8;
+
+ ACMRandom rnd_(seed);
+
+ Segment segment;
+ const int last_segid = rnd_.PseudoUniform(MAX_SEGMENTS);
+ segment.last_id = last_segid;
+ segment.pred = rnd_.PseudoUniform(MAX_SEGMENTS);
+ segment.id = rnd_.PseudoUniform(last_segid + 1);
+
+ return segment;
+}
+
+// Try to reveal a mismatch between segment binarization and debinarization
+TEST(SegmentBinarizationSync, SearchForBinarizationMismatch) {
+ const int count_tests = 1000;
+ const int seed_init = 4321;
+
+ for (int i = 0; i < count_tests; ++i) {
+ const Segment seg = GenerateSegment(seed_init + i);
+
+ const int max_segid = seg.last_id + 1;
+ const int seg_diff = av1_neg_interleave(seg.id, seg.pred, max_segid);
+ const int decoded_segid =
+ av1_neg_deinterleave(seg_diff, seg.pred, max_segid);
+
+ ASSERT_EQ(decoded_segid, seg.id);
+ }
+}
+
+} // namespace