/* libmisc/tests/test_log.c - Tests for <libmisc/log.h>
 *
 * Copyright (C) 2024  Luke T. Shumaker <lukeshu@lukeshu.com>
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

#define _GNU_SOURCE /* for vasprintf() */
#include <stdarg.h> /* for va_list */
#include <stdio.h>  /* for vasprintf() */
#include <stdlib.h> /* for free() */
#include <string.h> /* for strcmp() */

#define LOG_NAME FROBNICATE
#include <libmisc/log.h>

#include <libmisc/_intercept.h>

#include "test.h"

/* Intercept output ***********************************************************/

static char *log_output = NULL;

int __lm_printf(const char *format, ...) {
	va_list va;
	va_start(va, format);
	int ret = vasprintf(&log_output, format, va);
	va_end(va);
	return ret;
}

/* Actual tests ***************************************************************/

#define should_print(_exp, cmd) do {                     \
		char *exp = _exp;                        \
		test_assert(!log_output);                \
		cmd;                                     \
		if (!exp)                                \
			test_assert(!log_output);        \
		else {                                   \
			test_assert(log_output);         \
			if (strcmp(log_output, exp)) {   \
				printf("exp = \"%s\"\n"  \
				       "act = \"%s\"\n", \
				       exp, log_output); \
				test_assert(0);          \
			}                                \
		}                                        \
		if (log_output) {                        \
			free(log_output);                \
			log_output = NULL;               \
		}                                        \
	} while (0)

int main() {
	should_print("error: FROBNICATE: val=42\n",
	             errorf("val=%d", 42));
	should_print("info : FROBNICATE: val=0\n",
	             infof("val=%d", 0));
#ifndef NDEBUG
#define CONFIG_FROBNICATE_DEBUG 1
	should_print("debug: FROBNICATE: val=-2\n",
	             debugf("val=%d", -2));
#undef CONFIG_FROBNICATE_DEBUG
#define CONFIG_FROBNICATE_DEBUG 0
	should_print(NULL,
	             debugf("val=%d", -2));
#endif
	return 0;
}