pulsar-client-cpp/tests/ClientTest.cc

/**
 * Copyright 2016 Yahoo Inc.
 *
 * 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
 *
 *     http://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 <gtest/gtest.h>

#include <pulsar/Client.h>
#include "../lib/checksum/ChecksumProvider.h"

using namespace pulsar;

static std::string lookupUrl = "pulsar://localhost:8885";

TEST(ClientTest, testChecksumComputation) {

    std::string data = "test";
    std::string doubleData = "testtest";

    // (1) compute checksum of specific chunk of string
    int checksum1 = computeChecksum(0, (char *) data.c_str(), data.length());
    int checksum2 = computeChecksum(0, (char *) doubleData.c_str() + 4, 4);
    ASSERT_EQ(checksum1, checksum2);

    //(2) compute incremental checksum
    // (a) checksum on full data
    int doubleChecksum = computeChecksum(0, (char *) doubleData.c_str(), doubleData.length());
    // (b) incremental checksum on multiple partial data
    checksum1 = computeChecksum(0, (char *) data.c_str(), data.length());
    int incrementalChecksum = computeChecksum(checksum1, (char *) data.c_str(), data.length());
    ASSERT_EQ(incrementalChecksum, doubleChecksum);

}

TEST(ClientTest, testSwHwChecksum) {

    std::string data = "test";
    std::string doubleData = "testtest";

    // (1) compute checksum of specific chunk of string
    // (a) HW
    uint32_t hwChecksum1 = crc32cHw(0, (char *) data.c_str(), data.length());
    uint32_t hwChecksum2 = crc32cHw(0, (char *) doubleData.c_str() + 4, 4);
    // (b) SW
    uint32_t swChecksum1 = crc32cSw(0, (char *) data.c_str(), data.length());
    uint32_t swChecksum2 = crc32cSw(0, (char *) doubleData.c_str() + 4, 4);
    ASSERT_EQ(hwChecksum1, hwChecksum2);
    ASSERT_EQ(hwChecksum1, swChecksum1);
    ASSERT_EQ(hwChecksum2, swChecksum2);

    //(2) compute incremental checksum
    // (a.1) hw: checksum on full data
    uint32_t hwDoubleChecksum = crc32cHw(0, (char *) doubleData.c_str(), doubleData.length());
    // (a.2) hw: incremental checksum on multiple partial data
    hwChecksum1 = crc32cHw(0, (char *) data.c_str(), data.length());
    uint32_t hwIncrementalChecksum = crc32cHw(hwChecksum1, (char *) data.c_str(), data.length());
    // (b.1) sw: checksum on full data
    uint32_t swDoubleChecksum = crc32cSw(0, (char *) doubleData.c_str(), doubleData.length());
    // (b.2) sw: incremental checksum on multiple partial data
    swChecksum1 = crc32cHw(0, (char *) data.c_str(), data.length());
    uint32_t swIncrementalChecksum = crc32cSw(swChecksum1, (char *) data.c_str(), data.length());

    ASSERT_EQ(hwIncrementalChecksum, hwDoubleChecksum);
    ASSERT_EQ(hwIncrementalChecksum, swIncrementalChecksum);

}