1 files changed, 58 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/crc32c_test.cc b/third_party/libwebrtc/net/dcsctp/packet/crc32c_test.cc
new file mode 100644
index 0000000000..0821c4ef75
--- /dev/null
+++ b/third_party/libwebrtc/net/dcsctp/packet/crc32c_test.cc
@@ -0,0 +1,58 @@
+/*
+ *  Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#include "net/dcsctp/packet/crc32c.h"
+
+#include "test/gmock.h"
+
+namespace dcsctp {
+namespace {
+
+constexpr std::array<const uint8_t, 0> kEmpty = {};
+constexpr std::array<const uint8_t, 1> kZero = {0};
+constexpr std::array<const uint8_t, 4> kManyZeros = {0, 0, 0, 0};
+constexpr std::array<const uint8_t, 4> kShort = {1, 2, 3, 4};
+constexpr std::array<const uint8_t, 8> kLong = {1, 2, 3, 4, 5, 6, 7, 8};
+// https://tools.ietf.org/html/rfc3720#appendix-B.4
+constexpr std::array<const uint8_t, 32> k32Zeros = {
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+constexpr std::array<const uint8_t, 32> k32Ones = {
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+constexpr std::array<const uint8_t, 32> k32Incrementing = {
+    0,  1,  2,  3,  4,  5,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15,
+    16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31};
+constexpr std::array<const uint8_t, 32> k32Decrementing = {
+    31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16,
+    15, 14, 13, 12, 11, 10, 9,  8,  7,  6,  5,  4,  3,  2,  1,  0};
+constexpr std::array<const uint8_t, 48> kISCSICommandPDU = {
+    0x01, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
+    0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x18, 0x28, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+TEST(Crc32Test, TestVectors) {
+  EXPECT_EQ(GenerateCrc32C(kEmpty), 0U);
+  EXPECT_EQ(GenerateCrc32C(kZero), 0x51537d52U);
+  EXPECT_EQ(GenerateCrc32C(kManyZeros), 0xc74b6748U);
+  EXPECT_EQ(GenerateCrc32C(kShort), 0xf48c3029U);
+  EXPECT_EQ(GenerateCrc32C(kLong), 0x811f8946U);
+  // https://tools.ietf.org/html/rfc3720#appendix-B.4
+  EXPECT_EQ(GenerateCrc32C(k32Zeros), 0xaa36918aU);
+  EXPECT_EQ(GenerateCrc32C(k32Ones), 0x43aba862U);
+  EXPECT_EQ(GenerateCrc32C(k32Incrementing), 0x4e79dd46U);
+  EXPECT_EQ(GenerateCrc32C(k32Decrementing), 0x5cdb3f11U);
+  EXPECT_EQ(GenerateCrc32C(kISCSICommandPDU), 0x563a96d9U);
+}
+
+}  // namespace
+}  // namespace dcsctp