kernel/tests/printf_tests.cpp

// Copyright 2016 The Fuchsia Authors
// Copyright (c) 2008-2014 Travis Geiselbrecht
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

#include "tests.h"

#include <debug.h>
#include <stdio.h>
#include <string.h>

#if !WITH_NO_FP
#include "float_test_vec.c"

static void printf_tests_float(void) {
    printf("floating point printf tests\n");

    for (size_t i = 0; i < float_test_vec_size; i++) {
        PRINT_FLOAT;
    }
}
#endif

void printf_tests(void) {
    printf("printf tests\n");

    printf("numbers:\n");
    printf("int8:  %hhd %hhd %hhd\n", -12, 0, 254);
    printf("uint8: %hhu %hhu %hhu\n", -12, 0, 254);
    printf("int16: %hd %hd %hd\n", -1234, 0, 1234);
    printf("uint16:%hu %hu %hu\n", -1234, 0, 1234);
    printf("int:   %d %d %d\n", -12345678, 0, 12345678);
    printf("uint:  %u %u %u\n", -12345678, 0, 12345678);
    printf("long:  %ld %ld %ld\n", -12345678L, 0L, 12345678L);
    printf("ulong: %lu %lu %lu\n", -12345678UL, 0UL, 12345678UL);

    printf("longlong: %lli %lli %lli\n", -12345678LL, 0LL, 12345678LL);
    printf("ulonglong: %llu %llu %llu\n", -12345678LL, 0LL, 12345678LL);
    printf("ssize_t: %zd %zd %zd\n", (ssize_t)-12345678, (ssize_t)0, (ssize_t)12345678);
    printf("usize_t: %zu %zu %zu\n", (size_t)-12345678, (size_t)0, (size_t)12345678);
    printf("intmax_t: %jd %jd %jd\n", (intmax_t)-12345678, (intmax_t)0, (intmax_t)12345678);
    printf("uintmax_t: %ju %ju %ju\n", (uintmax_t)-12345678, (uintmax_t)0, (uintmax_t)12345678);
    printf("ptrdiff_t: %td %td %td\n", (ptrdiff_t)-12345678, (ptrdiff_t)0, (ptrdiff_t)12345678);
    printf("ptrdiff_t (u): %tu %tu %tu\n", (ptrdiff_t)-12345678, (ptrdiff_t)0, (ptrdiff_t)12345678);

    printf("hex:\n");
    printf("uint8: %hhx %hhx %hhx\n", -12, 0, 254);
    printf("uint16:%hx %hx %hx\n", -1234, 0, 1234);
    printf("uint:  %x %x %x\n", -12345678, 0, 12345678);
    printf("ulong: %lx %lx %lx\n", -12345678UL, 0UL, 12345678UL);
    printf("ulong: %X %X %X\n", -12345678, 0, 12345678);
    printf("ulonglong: %llx %llx %llx\n", -12345678LL, 0LL, 12345678LL);
    printf("usize_t: %zx %zx %zx\n", (size_t)-12345678, (size_t)0, (size_t)12345678);

    printf("alt/sign:\n");
    printf("uint: %#x %#X\n", 0xabcdef, 0xabcdef);
    printf("int: %+d %+d\n", 12345678, -12345678);
    printf("int: % d %+d\n", 12345678, 12345678);

    printf("formatting\n");
    printf("int: a%8da\n", 12345678);
    printf("int: a%9da\n", 12345678);
    printf("int: a%-9da\n", 12345678);
    printf("int: a%10da\n", 12345678);
    printf("int: a%-10da\n", 12345678);
    printf("int: a%09da\n", 12345678);
    printf("int: a%010da\n", 12345678);
    printf("int: a%6da\n", 12345678);

    printf("a%1sa\n", "b");
    printf("a%9sa\n", "b");
    printf("a%-9sa\n", "b");
    printf("a%5sa\n", "thisisatest");

    printf("%03d\n", -2);       /* '-02' */
    printf("%0+3d\n", -2);      /* '-02' */
    printf("%0+3d\n", 2);       /* '+02' */
    printf("%+3d\n", 2);        /* ' +2' */
    printf("% 3d\n", -2000);    /* '-2000' */
    printf("% 3d\n", 2000);     /* ' 2000' */
    printf("%+3d\n", 2000);     /* '+2000' */
    printf("%10s\n", "test");   /* '      test' */
    printf("%010s\n", "test");  /* '      test' */
    printf("%-10s\n", "test");  /* 'test      ' */
    printf("%-010s\n", "test"); /* 'test      ' */

    int err;

    err = printf("a");
    printf(" returned %d\n", err);
    err = printf("ab");
    printf(" returned %d\n", err);
    err = printf("abc");
    printf(" returned %d\n", err);
    err = printf("abcd");
    printf(" returned %d\n", err);
    err = printf("abcde");
    printf(" returned %d\n", err);
    err = printf("abcdef");
    printf(" returned %d\n", err);

    /* make sure snprintf terminates at the right spot */
    char buf[32];

    memset(buf, 0, sizeof(buf));
    err = sprintf(buf, "0123456789abcdef012345678");
    printf("sprintf returns %d\n", err);
    hexdump8(buf, sizeof(buf));

    memset(buf, 0, sizeof(buf));
    err = snprintf(buf, 15, "0123456789abcdef012345678");
    printf("snprintf returns %d\n", err);
    hexdump8(buf, sizeof(buf));

#if !WITH_NO_FP
    printf_tests_float();
#endif
}