time/gru_time_conversion_test.c

GRU time conversion example

/*
 * Copyright 2017 Otavio Piske <angusyoung@gmail.com>.
 *
 * 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 <stdbool.h>
#include <stdint.h>
#include <stdio.h>

#include "time/gru_time_utils.h"

int test_lost_precision_1() {
    gru_timestamp_t ts = gru_time_read_str("1483228862.529");
    uint64_t expected = 1483228862000; // All the microseconds <= 999 are lost

    uint64_t ret = gru_time_to_milli(&ts);

    if (ret != expected) {
        printf("Returned value %" PRIu64 " does not mach the expected value %" PRIu64
               "\n",
            ret,
            expected);

        return EXIT_FAILURE;
    }

    return EXIT_SUCCESS;
}

int test_lost_precision_2() {
    // 1999 = 1 millisecond
    gru_timestamp_t ts = gru_time_read_str("1483228862.1001");
    // All the microseconds thousandth range (ie.: 0 to 999 within eith 1000 units) are
    // lost
    uint64_t expected = 1483228862001;

    uint64_t ret = gru_time_to_milli(&ts);

    if (ret != expected) {
        printf("Returned value %" PRIu64 " does not mach the expected value %" PRIu64
               "\n",
            ret,
            expected);

        return EXIT_FAILURE;
    }

    return EXIT_SUCCESS;
}


int test_lost_precision_3() {
    gru_timestamp_t ts = gru_time_read_str("1492582746.9999998");
    uint64_t expected = 1492582746999;

    uint64_t ret = gru_time_to_milli(&ts);

    if (ret != expected) {
        printf("Returned value %" PRIu64 " does not mach the expected value %" PRIu64
               "\n",
            ret,
            expected);

        return EXIT_FAILURE;
    }

    return EXIT_SUCCESS;
}

int main(int argc, char **argv) {
    if (test_lost_precision_1() == EXIT_SUCCESS) {
        if (test_lost_precision_2() == EXIT_SUCCESS) {
            return test_lost_precision_3();
        }
    }

    return EXIT_FAILURE;
}
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