/*
 * Copyright (c) Cody Logan <cody@lokken.dev>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "parse-file.h"

static int test_parse_file(const char *testname, const char *input, const char *output) {
    FILE *instream = tmpfile();
    FILE *outstream = tmpfile();

    if (instream == NULL || outstream == NULL) {
        printf("Error opening temporary file(s)");
        return 1;
    }

    fprintf(instream, "%s", input);
    rewind(instream);

    const int length = strlen(output) + 1;
    char buffer[length];

    _parse_file(instream, outstream);

    const int tmp_length = ftell(outstream) + 1;
    rewind(outstream);

    char* result;
    size_t len = 0;
    do {
        result = fgets(buffer + len, tmp_length - len + 1, outstream);
        len = strlen(buffer);
    } while (result);
    fclose(instream);
    fclose(outstream);

    if (strcmp(buffer, output) == 0 && tmp_length == length) {
        printf("%s test succeeded\n", testname);
        return 0;
    } else {
        printf("%s test failed\n", testname);
        printf("%s\n !=\n%s\n", buffer, output);
        return 1;
    }
}

int main(void) {
    printf("\n=============\nRunning Tests\n=============\n");

    int errors = 0;
    errors += test_parse_file("1. Header",
            "# header",
            "<h1 id=\"header\">header</h1>\n");
    errors += test_parse_file("2. Bold",
            "**bold**",
            "<p><strong>bold</strong></p>\n");
    /*
     * Lowdown 1.0.2 removed superfluous newlines between HTML elements (see
     * GitHub commit f42602c); as a result, this test will fail for versions
     * older than that.
     *
     * Package or port availability as of 2023-11-29 (amd64-only; not an
     * exhaustive list):
     *  FreeBSD:    1.1.0 (latest), 1.0.2 (quarterly)
     *  OpenBSD:    1.0.0
     *  Ubuntu:     1.0.0 (23.10 and 23.04), 0.10.0 (22.04)
     */
    errors += test_parse_file("3. Multiline",
            "# header\n`code`",
            "<h1 id=\"header\">header</h1>\n<p><code>code</code></p>\n");

    printf("\n============\nTest Summary\n============\n");
    
    switch (errors) {
        case 0:
            printf("All tests succeeded\n");
            break;
        case 1:
            printf("One test failed\n");
            break;
        default:
            printf("%i tests failed\n", errors);
    }
}