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gists/c-programming/strings/portable_basename.test.c

126 lines
3.3 KiB
C

/*
* portable_basename.test.c
*
* Also compile `portable_basename.c` and `../benchmarking/clock_hr_microsec.c`
*
* Author: Intel A80486DX2-66
* License: Unlicense
*/
#include <inttypes.h>
#include <stdbool.h>
#include <stdio.h>
#include <time.h>
#include "portable_basename.h"
#include "../benchmarking/clock_hr_microsec.h"
// global variables
uintmax_t tests_failed = 0;
// function prototypes
static void func_expect(const char* path, const char* expected_output,
bool expect_to_succeed);
// function implementations
static void func_expect(const char* path, const char* expected_output,
bool expect_to_succeed) {
clock_hr_microsec_t t1 = 0, t2 = 0;
t1 = clock_hr_microsec();
char* output = portable_basename(path);
t2 = clock_hr_microsec();
if (output == NULL) {
perror("portable_basename");
exit(EXIT_FAILURE);
}
const char* caption = expect_to_succeed ? "Expected output "
: "Unexpected output";
clock_hr_microsec_t t = clock_hr_microsec_diff(t2, t1);
printf("Input path : '%s'\n"
"%s: '%s'\n"
"Actual output : '%s'\n"
"Time, clock_t : %" CLOCK_HR_MICROSEC_PRI " microsec\n"
"Test result : ", path, caption, expected_output, output, t);
if ((bool) (strcmp(output, expected_output)) == expect_to_succeed) {
tests_failed++;
free(output);
puts("Failed!\n");
return;
}
puts("Passed\n");
free(output);
fflush(stdout);
}
// macros
#define STRINGIZE(x) #x
#define INT2STR(x) STRINGIZE(x)
#define TIMES_TO_CALL 65535
int main(void) {
clock_hr_microsec_init();
// positive tests
func_expect("/", "", true);
func_expect("/usr/include/stdlib.h", "stdlib.h", true);
func_expect("C:\\Windows\\Fonts\\consola.ttf", "consola.ttf", true);
func_expect("\\..\\..\\directory\\.e.x.e.c.u.t.a.b.l.e.",
".e.x.e.c.u.t.a.b.l.e.", true);
// negative tests
func_expect("/a/.b.c.", "b.c", false);
func_expect("/a/.b.c.", ".b.c", false);
func_expect("/a/.b.c.", "b.c.", false);
func_expect("/a/.b.c.\\", ".b.c.", false);
printf("Failed tests: %" PRIuMAX "\n", tests_failed);
// timing test
puts("\nBenchmarking (" INT2STR(TIMES_TO_CALL) " calls):");
fflush(stdout);
#define BENCHMARKING_STRING_SET \
"a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r\\s\\t\\u\\v\\w\\x\\y\\z\\.\\file", \
"/mnt/cdrom/usr/bin/include/library/test_files/test.h"
const char* string_set[] = {
BENCHMARKING_STRING_SET,
// HACK: try to prevent caching by using different pointers
BENCHMARKING_STRING_SET,
BENCHMARKING_STRING_SET,
BENCHMARKING_STRING_SET
};
const size_t string_set_len = sizeof(string_set) / sizeof(char*);
clock_hr_microsec_t t_beginning = 0, t_end = 0;
clock_hr_microsec_t t_total = 0.l;
for (uint_fast16_t i = 0; i < TIMES_TO_CALL; i++) {
const char* selected_string = string_set[i % string_set_len];
t_beginning = clock_hr_microsec();
char* output = portable_basename(selected_string);
t_end = clock_hr_microsec();
if (output == NULL) {
perror("portable_basename");
return EXIT_FAILURE;
}
free(output);
t_total += clock_hr_microsec_diff(t_end, t_beginning);
}
printf("Total time: %" CLOCK_HR_MICROSEC_PRI " microsec, avg. "
"%" CLOCK_HR_MICROSEC_PRI "microsec\n", t_total,
t_total / ((long double) TIMES_TO_CALL));
return (tests_failed > 0 ? EXIT_FAILURE : EXIT_SUCCESS);
}