source: mainline/uspace/lib/c/test/stdio.c@ cd1e3fc0

/*
 * SPDX-FileCopyrightText: 2018 Jiri Svoboda
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

/** @addtogroup libc
 * @{
 */
/**
 * @file
 * @brief Test stdio module
 */

#include <errno.h>
#include <pcut/pcut.h>
#include <stdio.h>
#include <str.h>
#include <tmpfile.h>
#include <vfs/vfs.h>

PCUT_INIT;

PCUT_TEST_SUITE(stdio);

/** remove function */
PCUT_TEST(remove)
{
        char buf[L_tmpnam];
        char *p;
        FILE *f;
        int rc;

        /* Generate unique file name */
        p = tmpnam(buf);
        PCUT_ASSERT_NOT_NULL(p);

        /* Removing it should fail */
        rc = remove(buf);
        PCUT_ASSERT_TRUE(rc != 0);

        f = fopen(buf, "wx");
        PCUT_ASSERT_NOT_NULL(f);
        fclose(f);

        /* Remove for the first time */
        rc = remove(buf);
        PCUT_ASSERT_INT_EQUALS(0, rc);

        /* Should fail the second time */
        rc = remove(buf);
        PCUT_ASSERT_TRUE(rc != 0);
}

/** rename function */
PCUT_TEST(rename)
{
        char buf1[L_tmpnam];
        char buf2[L_tmpnam];
        char *p;
        FILE *f;
        int rc;

        /* Generate first unique file name */
        p = tmpnam(buf1);
        PCUT_ASSERT_NOT_NULL(p);

        /* Generate second unique file name */
        p = tmpnam(buf2);
        PCUT_ASSERT_NOT_NULL(p);

        f = fopen(buf1, "wx");
        PCUT_ASSERT_NOT_NULL(f);
        fclose(f);

        /* Rename to the second name */
        rc = rename(buf1, buf2);
        PCUT_ASSERT_INT_EQUALS(0, rc);

        /* First name should no longer exist */
        rc = remove(buf1);
        PCUT_ASSERT_TRUE(rc != 0);

        /* Second can be removed */
        rc = remove(buf2);
        PCUT_ASSERT_INT_EQUALS(0, rc);
}

/** tmpfile function */
PCUT_TEST(tmpfile)
{
        FILE *f;
        char c;
        size_t n;

        f = tmpfile();
        PCUT_ASSERT_NOT_NULL(f);

        c = 'x';
        n = fwrite(&c, sizeof(c), 1, f);
        PCUT_ASSERT_INT_EQUALS(1, n);

        rewind(f);
        c = '\0';
        n = fread(&c, sizeof(c), 1, f);
        PCUT_ASSERT_INT_EQUALS(1, n);
        PCUT_ASSERT_INT_EQUALS('x', c);

        fclose(f);
}

/** tmpnam function with buffer argument */
PCUT_TEST(tmpnam_buf)
{
        char buf[L_tmpnam];
        char *p;
        FILE *f;

        p = tmpnam(buf);
        PCUT_ASSERT_NOT_NULL(p);

        f = fopen(p, "w+x");
        PCUT_ASSERT_NOT_NULL(f);
        (void) remove(p);
        fclose(f);
}

/** tmpnam function called twice */
PCUT_TEST(tmpnam_twice)
{
        char buf1[L_tmpnam];
        char buf2[L_tmpnam];
        char *p;

        p = tmpnam(buf1);
        PCUT_ASSERT_NOT_NULL(p);

        p = tmpnam(buf2);
        PCUT_ASSERT_NOT_NULL(p);

        /* We must get two distinct names */
        PCUT_ASSERT_TRUE(str_cmp(buf1, buf2) != 0);
}

/** tmpnam function with NULL argument */
PCUT_TEST(tmpnam_null)
{
        char *p;
        FILE *f;

        p = tmpnam(NULL);
        PCUT_ASSERT_NOT_NULL(p);

        f = fopen(p, "w+x");
        PCUT_ASSERT_NOT_NULL(f);
        (void) remove(p);
        fclose(f);
}

/** fgetpos and fsetpos functions */
PCUT_TEST(fgetpos_setpos)
{
        fpos_t pos;
        int rc;
        FILE *f;

        f = tmpfile();
        PCUT_ASSERT_NOT_NULL(f);

        rc = fputs("abc", f);
        PCUT_ASSERT_TRUE(rc >= 0);

        rc = fgetpos(f, &pos);
        PCUT_ASSERT_TRUE(rc >= 0);

        rewind(f);

        rc = fsetpos(f, &pos);
        PCUT_ASSERT_TRUE(rc >= 0);

        (void) fclose(f);
}

/** perror function with NULL as argument */
PCUT_TEST(perror_null_msg)
{
        errno = EINVAL;
        perror(NULL);
}

/** perror function with empty string as argument */
PCUT_TEST(perror_empty_msg)
{
        errno = EINVAL;
        perror("");
}

/** perror function with a message argument */
PCUT_TEST(perror_msg)
{
        errno = EINVAL;
        perror("This is a test");
}

PCUT_EXPORT(stdio);