mirror of
https://github.com/scottlamb/moonfire-nvr.git
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107 lines
3.7 KiB
C++
107 lines
3.7 KiB
C++
// This file is part of Moonfire NVR, a security camera network video recorder.
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// Copyright (C) 2016 Scott Lamb <slamb@slamb.org>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// In addition, as a special exception, the copyright holders give
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// permission to link the code of portions of this program with the
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// OpenSSL library under certain conditions as described in each
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// individual source file, and distribute linked combinations including
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// the two.
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//
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// You must obey the GNU General Public License in all respects for all
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// of the code used other than OpenSSL. If you modify file(s) with this
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// exception, you may extend this exception to your version of the
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// file(s), but you are not obligated to do so. If you do not wish to do
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// so, delete this exception statement from your version. If you delete
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// this exception statement from all source files in the program, then
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// also delete it here.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// coding-test.cc: tests of the coding.h interface.
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#include <gflags/gflags.h>
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#include <glog/logging.h>
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include "coding.h"
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DECLARE_bool(alsologtostderr);
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namespace moonfire_nvr {
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namespace {
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TEST(VarintTest, Simple) {
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// Encode.
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std::string foo;
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AppendVar32(UINT32_C(1), &foo);
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EXPECT_EQ("\x01", foo);
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AppendVar32(UINT32_C(300), &foo);
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EXPECT_EQ("\x01\xac\x02", foo);
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// Decode.
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re2::StringPiece p(foo);
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uint32_t out;
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std::string error_message;
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EXPECT_TRUE(DecodeVar32(&p, &out, &error_message));
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EXPECT_EQ(UINT32_C(1), out);
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EXPECT_TRUE(DecodeVar32(&p, &out, &error_message));
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EXPECT_EQ(UINT32_C(300), out);
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}
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TEST(VarintTest, DecodeErrors) {
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re2::StringPiece empty;
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uint32_t out;
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std::string error_message;
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EXPECT_FALSE(DecodeVar32(&empty, &out, &error_message));
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EXPECT_EQ("buffer underrun", error_message);
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re2::StringPiece partial("\x80", 1);
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EXPECT_FALSE(DecodeVar32(&partial, &out, &error_message));
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EXPECT_EQ("buffer underrun", error_message);
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re2::StringPiece too_big("\x80\x80\x80\x80\x10", 5);
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EXPECT_FALSE(DecodeVar32(&too_big, &out, &error_message));
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EXPECT_EQ("integer overflow", error_message);
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}
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TEST(ZigzagTest, Encode) {
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EXPECT_EQ(UINT32_C(0), Zigzag32(INT32_C(0)));
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EXPECT_EQ(UINT32_C(1), Zigzag32(INT32_C(-1)));
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EXPECT_EQ(UINT32_C(2), Zigzag32(INT32_C(1)));
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EXPECT_EQ(UINT32_C(3), Zigzag32(INT32_C(-2)));
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EXPECT_EQ(UINT32_C(4294967294), Zigzag32(INT32_C(2147483647)));
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EXPECT_EQ(UINT32_C(4294967295), Zigzag32(INT32_C(-2147483648)));
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}
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TEST(ZigzagTest, Decode) {
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EXPECT_EQ(INT32_C(0), Unzigzag32(UINT32_C(0)));
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EXPECT_EQ(INT32_C(-1), Unzigzag32(UINT32_C(1)));
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EXPECT_EQ(INT32_C(1), Unzigzag32(UINT32_C(2)));
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EXPECT_EQ(INT32_C(-2), Unzigzag32(UINT32_C(3)));
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EXPECT_EQ(INT32_C(2147483647), Unzigzag32(UINT32_C(4294967294)));
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EXPECT_EQ(INT32_C(-2147483648), Unzigzag32(UINT32_C(4294967295)));
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}
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} // namespace
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} // namespace moonfire_nvr
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int main(int argc, char **argv) {
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FLAGS_alsologtostderr = true;
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google::ParseCommandLineFlags(&argc, &argv, true);
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testing::InitGoogleTest(&argc, argv);
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google::InitGoogleLogging(argv[0]);
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return RUN_ALL_TESTS();
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}
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