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/*
* Copyright (C) 2020-2021 Tomasz Kramkowski <tk@the-tk.com>
* SPDX-License-Identifier: MIT
*/
#include <assert.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "pack.h"
typedef bool test_func(void);
struct test {
test_func *func;
char *desc;
};
#define TEST(name, desc) static bool test_##name(void); \
static struct test testinfo_##name \
__attribute__((__section__("tests"))) \
__attribute__((__used__)) = \
{ test_##name, desc }; \
static bool test_##name(void)
#define DATA(...) (unsigned char []){ __VA_ARGS__ }
#define CHECK(test) if (!(test)) { puts("! " #test); return false; }
#define CHECK_UNPACK(data, fmt, ...) do { \
enum pack_status CHECK_UNPACK_s = unpack(data, sizeof (data), fmt, __VA_ARGS__); \
if (CHECK_UNPACK_s != PACK_OK) { \
printf(__FILE__ ":%d unpack(" #data ", " #fmt ", ...) -> %s (%d)\n", __LINE__, pack_strerror(CHECK_UNPACK_s), CHECK_UNPACK_s); \
return false; \
} \
} while (0)
#define CHECK_UNPACK_STRUCT(data, args, dest) do { \
enum pack_status CHECK_UNPACK_STRUCT_s = \
unpack_struct(data, sizeof (data), args, dest); \
if (CHECK_UNPACK_STRUCT_s != PACK_OK) { \
printf(__FILE__ ":%d unpack_struct(" #data ", " #args ", " #dest ") -> %s (%d)\n", \
__LINE__, pack_strerror(CHECK_UNPACK_STRUCT_s), \
CHECK_UNPACK_STRUCT_s); \
return false; \
} \
} while(0)
#define CHECK_EQUAL(f, a, b) if (a != b) { printf(__FILE__ ":%d %"f" != %"f"\n", __LINE__, a, b); return false; }
#define CHECK_PACK(dest, fmt, ...) do { \
enum pack_status CHECK_PACK_s = pack(dest, sizeof (dest), fmt, __VA_ARGS__); \
if (CHECK_PACK_s != PACK_OK) { \
printf(__FILE__ ":%d pack(%p, %zu, " #fmt ", ...) -> %s (%d)\n", __LINE__, (void *)(dest), sizeof (dest), pack_strerror(CHECK_PACK_s), CHECK_PACK_s); \
return false; \
} \
} while (0)
#define CHECK_BUFEQUAL(a, b) \
static_assert(sizeof (a) == sizeof (b), "CHECK_BUFEQUAL - buffer sizes don't match"); \
if (!do_check_bufequal(__FILE__, __LINE__, (a), (b), sizeof (a))) return false;
static bool do_check_bufequal(const char *file, int line, void *a_, void *b_, size_t s)
{
unsigned char *a = a_, *b = b_;
bool mismatch = false;
size_t start, end;
for (size_t i = 0; i < s; i++) {
if (a[i] == b[i]) continue;
if (!mismatch) {
start = i;
mismatch = true;
}
end = i + 1;
}
if (!mismatch) return true;
if (start > 0) start--;
if (end < s) end++;
printf("%s:%d buffers unequal\n idx", file, line);
for (size_t i = start; i < end; i++) printf(" %02zu", i);
printf("\n a =");
for (size_t i = start; i < end; i++) printf(" %02x", a[i]);
printf("\n b =");
for (size_t i = start; i < end; i++) printf(" %02x", b[i]);
putchar('\n');
return false;
}
// @BUILD_DEP test.inc
#include "test.inc"
TEST(unpack_simple0_float, "unpack simple float")
{
float v[1] = { __LINE__ };
CHECK_UNPACK(DATA(0x00, 0x00, 0x00, 0x00), "f", &v);
CHECK_EQUAL("f", v[0], 0.0f);
CHECK_UNPACK(DATA(0x3f, 0x80, 0x00, 0x00), "f", &v);
CHECK_EQUAL("f", v[0], 1.0f);
CHECK_UNPACK(DATA(0x41, 0x00, 0x00, 0x00), "f", &v);
CHECK_EQUAL("f", v[0], 8.0f);
return true;
}
TEST(unpack_simple0_double, "unpack simple double")
{
double v[1] = { __LINE__ };
CHECK_UNPACK(DATA(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00), "d", &v);
CHECK_EQUAL("f", v[0], 0.0f);
CHECK_UNPACK(DATA(0x3f, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00), "d", &v);
CHECK_EQUAL("f", v[0], 1.0f);
CHECK_UNPACK(DATA(0x40, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00), "d", &v);
CHECK_EQUAL("f", v[0], 8.0f);
return true;
}
TEST(unpack_simple_padding, "unpack simple padding")
{
struct {
int i;
unsigned char c;
float f;
} v = { __LINE__, __LINE__ + 1, __LINE__ + 2 };
CHECK_UNPACK(DATA(0xff, 0x85,
0x00, 0x00, 0x00,
0x16,
0x00, 0x00,
0x40, 0x44, 0x58, 0x00),
">i3xBxxf", &v.i, &v.c, &v.f);
CHECK_EQUAL("d", v.i, -123);
CHECK_EQUAL("d", v.c, 22);
CHECK_EQUAL("f", v.f, 0x1.88bp+1);
return true;
}
TEST(pack_simple_general, "pack simple general")
{
unsigned char b[12] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 };
CHECK_PACK(b, ">ixxxBxxl", -123, 22, -12648430l);
CHECK_BUFEQUAL(b, DATA(0xff, 0x85,
0x00, 0x00, 0x00,
0x16,
0x00, 0x00,
0xff, 0x3f, 0x00, 0x12));
return true;
}
TEST(unpack_struct_simple, "unpack_struct simple")
{
struct dest {
int i;
unsigned char B;
float f;
} v = { __LINE__, __LINE__ + 1, __LINE__ + 2 };
struct pack_args args = {
.endian = PACK_ENDIAN_BIG,
.fields = (struct pack_field []){
{ PACK_TYPE_INT, 1, offsetof(struct dest, i) },
{ PACK_TYPE_PADDING, 3, 0 },
{ PACK_TYPE_UCHAR, 1, offsetof(struct dest, B) },
{ PACK_TYPE_PADDING, 2, 0 },
{ PACK_TYPE_FLOAT, 1, offsetof(struct dest, f) },
},
.num_fields = 5,
};
unsigned char d[] = {
0xff, 0x85,
0x00, 0x00, 0x00,
0x16,
0x00, 0x00,
0x40, 0x44, 0x58, 0x00
};
CHECK_UNPACK_STRUCT(d, &args, &v);
CHECK_EQUAL("d", v.i, -123);
CHECK_EQUAL("d", v.B, 22);
CHECK_EQUAL("f", v.f, 0x1.88bp+1);
return true;
}
int main(void)
{
extern struct test __start_tests, __stop_tests;
int ret = EXIT_SUCCESS;
pack_trace = PACK_TRACE_OFF;
for (struct test *t = &__start_tests; t < &__stop_tests; t++) {
if (t->func()) {
printf(" OK %s\n", t->desc);
continue;
}
pack_trace = PACK_TRACE_ALL;
fprintf(stderr, ">>> Test failure trace for '%s'\n", t->desc);
t->func();
fprintf(stderr, "<<<\n");
pack_trace = PACK_TRACE_OFF;
printf("FAIL %s\n", t->desc);
ret = EXIT_FAILURE;
}
return ret;
}
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