#include <check.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>

#include "ttail_check.h"
#include "ttail.h"
#include "ttail_init.h"

/*
 * ttail_add_logfile() tests
 */
START_TEST (test_init_empty_logfilename)
{
	ck_assert_msg(ttail->logfile_name == NULL,
		"ttail_t.logfile_name should be NULL");
}
END_TEST

START_TEST (test_init_nonexist_logfilename)
{
	char *fname;
	int ret;
	/** @todo replace by mkstemp */
	fname = tempnam(NULL, "ttail_check");

	ret = ttail_add_logfile(ttail, fname);
	ck_assert_int_eq(ret, 1);
	ck_assert(ttail->logfile_name != NULL);
	ck_assert_str_eq(ttail->logfile_name[0], fname);
	ck_assert(ttail->logfile[0] == NULL);
	free(fname);
}
END_TEST

START_TEST (test_init_exist_logfilename)
{
	char *fname;
	int ret;
	FILE *fp;
	fname = tempnam(NULL, "ttail_check");
	if(!(fp = fopen(fname, "w+")))
	{
		perror("Unable to create file for testing");
		ck_abort_msg("Unable to create file for testing");
	}
	if(fclose(fp))
	{
		perror("Unable to close file for testing");
		ck_abort_msg("Unabe to close file for testing");
	}

	ret = ttail_add_logfile(ttail, fname);
	ck_assert_int_eq(ret, 0);
	ck_assert(ttail->logfile_name != NULL);
	ck_assert_str_eq(ttail->logfile_name[0], fname);
	ck_assert(ttail->logfile[0] != NULL);
	free(fname);
}
END_TEST

START_TEST (test_init_same_exist_logfilename)
{
	char *fname;
	int ret;
	FILE *fp;
	fname = tempnam(NULL, "ttail_check");
	if(!(fp = fopen(fname, "w+")))
	{
		perror("Unable to create file for testing");
		ck_abort_msg("Unable to create file for testing");
	}
	if(fclose(fp))
	{
		perror("Unable to close file for testing");
		ck_abort_msg("Unabe to close file for testing");
	}

	ret = ttail_add_logfile(ttail, fname);
	ck_assert_int_eq(ret, 0);
	ret = ttail_add_logfile(ttail, fname);
	ck_assert_int_eq(ret, -1);
	ck_assert_int_eq(ttail->logfile_sz, 1);
	ck_assert(ttail->logfile_name != NULL);
	ck_assert_str_eq(ttail->logfile_name[0], fname);
	ck_assert(ttail->logfile[0] != NULL);
	free(fname);
}
END_TEST

START_TEST (test_init_same_nonexist_logfilename)
{
	char *fname;
	int ret;
	fname = tempnam(NULL, "ttail_check");

	ret = ttail_add_logfile(ttail, fname);
	ck_assert_int_eq(ret, 1);
	ret = ttail_add_logfile(ttail, fname);
	ck_assert_int_eq(ret, -1);
	ck_assert_int_eq(ttail->logfile_sz, 1);
	ck_assert(ttail->logfile_name != NULL);
	ck_assert_str_eq(ttail->logfile_name[0], fname);
	ck_assert(ttail->logfile[0] == NULL);
	free(fname);
}
END_TEST

START_TEST (test_init_multiple_logfilename)
{
	char *fname[20];
	int ret;
	int i, j;
	for(i=0;i<20;i++)
	{
		fname[i] = tempnam(NULL, "ttail_check");
	}
	
	for(i=0; i<20; i++)
	{
		for(j=0; j<i; j++)
		{
			ret = ttail_add_logfile(ttail, fname[j]);
			ck_assert_int_eq(ret, -1);
			ck_assert_int_eq(ttail->logfile_sz, i);
		}
		ret = ttail_add_logfile(ttail, fname[i]);
		ck_assert_int_eq(ret, 1);
		ck_assert_int_eq(ttail->logfile_sz, i+1);
		for(j=0; j<i+1; j++)
		{
			ck_assert_str_eq(ttail->logfile_name[j], fname[j]);
			ck_assert(ttail->logfile[j] == NULL);
		}
	}
	for(i=0; i<20; i++)
	{
		free(fname[i]);
	}
}
END_TEST

TTAIL_CHECK_START("ttail init checks", "logfile init checks")
	TTAIL_SET_FIXTURE(setup_ttail_empty, teardown_ttail);
	TTAIL_ADD_TEST(test_init_empty_logfilename);
	TTAIL_ADD_TEST(test_init_nonexist_logfilename);
	TTAIL_ADD_TEST(test_init_exist_logfilename);
	TTAIL_ADD_TEST(test_init_same_exist_logfilename);
	TTAIL_ADD_TEST(test_init_same_nonexist_logfilename);
	TTAIL_ADD_TEST(test_init_multiple_logfilename);
TTAIL_CHECK_END