/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2023 Mike Becker, Olaf Wintermann All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "cx/test.h"
#include "util_allocator.h"
#include <errno.h>
#include "cx/buffer.h"
CX_TEST(test_buffer_init_wrap_space) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
CxBuffer buf;
void *space = cxMalloc(alloc, 16);
cxBufferInit(&buf, space, 16, alloc, CX_BUFFER_DEFAULT);
CX_TEST_ASSERT(buf.flush == NULL);
CX_TEST_ASSERT(buf.space == space);
CX_TEST_ASSERT((buf.flags & CX_BUFFER_AUTO_EXTEND) == 0);
CX_TEST_ASSERT((buf.flags & CX_BUFFER_FREE_CONTENTS) == 0);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(buf.allocator == alloc);
cxBufferDestroy(&buf);
CX_TEST_ASSERT(!cx_testing_allocator_verify(&talloc));
cxFree(alloc, space);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_init_wrap_space_auto_extend) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
CxBuffer buf;
void *space = cxMalloc(alloc, 16);
cxBufferInit(&buf, space, 16, alloc, CX_BUFFER_AUTO_EXTEND);
CX_TEST_ASSERT(buf.flush == NULL);
CX_TEST_ASSERT(buf.space == space);
CX_TEST_ASSERT((buf.flags & CX_BUFFER_AUTO_EXTEND) == CX_BUFFER_AUTO_EXTEND);
CX_TEST_ASSERT((buf.flags & CX_BUFFER_FREE_CONTENTS) == 0);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(buf.allocator == alloc);
cxBufferDestroy(&buf);
CX_TEST_ASSERT(!cx_testing_allocator_verify(&talloc));
cxFree(alloc, space);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_init_wrap_space_auto_free) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
CxBuffer buf;
void *space = cxMalloc(alloc, 16);
cxBufferInit(&buf, space, 16, alloc, CX_BUFFER_FREE_CONTENTS);
CX_TEST_ASSERT(buf.flush == NULL);
CX_TEST_ASSERT(buf.space == space);
CX_TEST_ASSERT((buf.flags & CX_BUFFER_AUTO_EXTEND) == 0);
CX_TEST_ASSERT((buf.flags & CX_BUFFER_FREE_CONTENTS) == CX_BUFFER_FREE_CONTENTS);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(buf.allocator == alloc);
CX_TEST_ASSERT(!cx_testing_allocator_verify(&talloc));
cxBufferDestroy(&buf);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_init_fresh_space) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
CxBuffer buf;
cxBufferInit(&buf, NULL, 8, alloc, CX_BUFFER_DEFAULT);
CX_TEST_ASSERT(buf.flush == NULL);
CX_TEST_ASSERT(buf.space != NULL);
CX_TEST_ASSERT((buf.flags & CX_BUFFER_AUTO_EXTEND) == 0);
CX_TEST_ASSERT((buf.flags & CX_BUFFER_FREE_CONTENTS) == CX_BUFFER_FREE_CONTENTS);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(buf.allocator == alloc);
CX_TEST_ASSERT(!cx_testing_allocator_verify(&talloc)); // space is still allocated
cxBufferDestroy(&buf);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_init_on_heap) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
CxBuffer *buf;
void *space = cxMalloc(alloc, 16);
buf = cxBufferCreate(space, 16, alloc, CX_BUFFER_FREE_CONTENTS);
CX_TEST_ASSERT(buf != NULL);
CX_TEST_ASSERT(buf->flush == NULL);
CX_TEST_ASSERT(buf->space == space);
CX_TEST_ASSERT((buf->flags & CX_BUFFER_AUTO_EXTEND) == 0);
CX_TEST_ASSERT((buf->flags & CX_BUFFER_FREE_CONTENTS) == CX_BUFFER_FREE_CONTENTS);
CX_TEST_ASSERT(buf->pos == 0);
CX_TEST_ASSERT(buf->size == 0);
CX_TEST_ASSERT(buf->capacity == 16);
CX_TEST_ASSERT(buf->allocator == alloc);
cxBufferFree(buf);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_create_defaulted_allocator) {
CX_TEST_DO {
CxBuffer *buf;
buf = cxBufferCreate(NULL, 16, NULL, 0);
CX_TEST_ASSERT(buf != NULL);
CX_TEST_ASSERT(buf->flush == NULL);
CX_TEST_ASSERT(buf->space != NULL);
CX_TEST_ASSERT((buf->flags & CX_BUFFER_AUTO_EXTEND) == 0);
CX_TEST_ASSERT((buf->flags & CX_BUFFER_FREE_CONTENTS) == CX_BUFFER_FREE_CONTENTS);
CX_TEST_ASSERT(buf->pos == 0);
CX_TEST_ASSERT(buf->size == 0);
CX_TEST_ASSERT(buf->capacity == 16);
CX_TEST_ASSERT(buf->allocator == cxDefaultAllocator);
cxBufferFree(buf);
}
}
CX_TEST(test_buffer_minimum_capacity_sufficient) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
void *space = cxMalloc(alloc, 8);
CxBuffer buf;
cxBufferInit(&buf, space, 8, alloc, CX_BUFFER_FREE_CONTENTS);
memcpy(space, "Testing", 8);
buf.size = 8;
cxBufferMinimumCapacity(&buf, 6);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(memcmp(buf.space, "Testing", 8) == 0);
cxBufferDestroy(&buf);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_minimum_capacity_extend) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
void *space = cxMalloc(alloc, 8);
CxBuffer buf;
cxBufferInit(&buf, space, 8, alloc, CX_BUFFER_FREE_CONTENTS); // NO auto extend!
memcpy(space, "Testing", 8);
buf.size = 8;
cxBufferMinimumCapacity(&buf, 16);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(memcmp(buf.space, "Testing", 8) == 0);
// below page size, new capacity should be power of two
cxBufferMinimumCapacity(&buf, 200);
CX_TEST_ASSERT(buf.capacity == 256);
// greater than page size, new capacity should be multiple of pagesize
cxBufferMinimumCapacity(&buf, cx_system_page_size() + 200);
CX_TEST_ASSERT(buf.capacity == cx_system_page_size()*2);
cxBufferDestroy(&buf);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_shrink) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, alloc, CX_BUFFER_FREE_CONTENTS);
cxBufferPutString(&buf, "Testing");
cxBufferTerminate(&buf);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(buf.size == 7);
cxBufferShrink(&buf, 4);
CX_TEST_ASSERT(buf.capacity == 11);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(memcmp(buf.space, "Testing", 8) == 0);
cxBufferDestroy(&buf);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_shrink_copy_on_write) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
CxBuffer buf;
const char* space = "Testing";
cxBufferInit(&buf, (void*)space, 16, alloc, CX_BUFFER_COPY_ON_WRITE);
buf.size = 8;
CX_TEST_ASSERT(buf.capacity == 16);
cxBufferShrink(&buf, 4);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(memcmp(buf.space, "Testing", 8) == 0);
CX_TEST_ASSERT(talloc.alloc_total == 0);
cxBufferDestroy(&buf);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_shrink_copy_on_extend) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
CxBuffer buf;
char space[16] = "Testing";
cxBufferInit(&buf, space, 16, alloc, CX_BUFFER_COPY_ON_EXTEND);
buf.size = 8;
CX_TEST_ASSERT(buf.capacity == 16);
cxBufferShrink(&buf, 4);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(memcmp(buf.space, "Testing", 8) == 0);
CX_TEST_ASSERT(talloc.alloc_total == 0);
cxBufferDestroy(&buf);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_reserve) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
CxAllocator *alloc = &talloc.base;
CX_TEST_DO {
CxBuffer buf;
char space[16] = "Testing";
cxBufferInit(&buf, space, 16, alloc, CX_BUFFER_COPY_ON_EXTEND);
buf.size = 8;
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(talloc.alloc_total == 0);
// reserve to grow
cxBufferReserve(&buf, 32);
CX_TEST_ASSERT(buf.capacity == 32);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(memcmp(buf.space, "Testing", 8) == 0);
CX_TEST_ASSERT(talloc.alloc_total > 0);
CX_TEST_ASSERT((buf.flags & CX_BUFFER_COPY_ON_EXTEND) == 0);
// reserve to shrink
buf.size = 24;
cxBufferReserve(&buf, 16);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(buf.size == 16);
CX_TEST_ASSERT(memcmp(buf.space, "Testing", 8) == 0);
// reserve to free
cxBufferReserve(&buf, 0);
CX_TEST_ASSERT(buf.capacity == 0);
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(buf.space == NULL);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
cxBufferDestroy(&buf);
}
cx_testing_allocator_destroy(&talloc);
}
CX_TEST(test_buffer_clear) {
char space[16];
strcpy(space, "clear test");
CxBuffer buf;
cxBufferInit(&buf, space, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
CX_TEST_DO {
CX_TEST_ASSERT(buf.size == 0);
// only clear the used part of the buffer
cxBufferClear(&buf);
CX_TEST_ASSERT(0 == memcmp(space, "clear test", 10));
buf.size = 5;
buf.pos = 3;
cxBufferClear(&buf);
CX_TEST_ASSERT(0 == memcmp(space, "\0\0\0\0\0 test", 10));
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(buf.pos == 0);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_clear_copy_on_write) {
char space[16];
strcpy(space, "clear test");
CxBuffer buf;
cxBufferInit(&buf, space, 16, cxDefaultAllocator, CX_BUFFER_COPY_ON_WRITE);
CX_TEST_DO {
buf.size = 5;
buf.pos = 3;
cxBufferClear(&buf);
CX_TEST_ASSERT(0 == memcmp(space, "clear test", 10));
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(buf.pos == 0);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_reset) {
char space[16];
strcpy(space, "reset test");
CxBuffer buf;
cxBufferInit(&buf, space, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
CX_TEST_DO {
buf.size = 5;
buf.pos = 3;
cxBufferReset(&buf);
CX_TEST_ASSERT(0 == memcmp(space, "reset test", 10));
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(buf.pos == 0);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_set_zero) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, 0, SEEK_SET);
CX_TEST_ASSERT(result == 0);
CX_TEST_ASSERT(buf.pos == 0);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_set_valid) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, 5, SEEK_SET);
CX_TEST_ASSERT(result == 0);
CX_TEST_ASSERT(buf.pos == 5);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_set_invalid) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, 7, SEEK_SET);
CX_TEST_ASSERT(result != 0);
CX_TEST_ASSERT(buf.pos == 3);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_cur_zero) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, 0, SEEK_CUR);
CX_TEST_ASSERT(result == 0);
CX_TEST_ASSERT(buf.pos == 3);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_cur_valid_positive) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, 2, SEEK_CUR);
CX_TEST_ASSERT(result == 0);
CX_TEST_ASSERT(buf.pos == 5);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_cur_valid_negative) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, -3, SEEK_CUR);
CX_TEST_ASSERT(result == 0);
CX_TEST_ASSERT(buf.pos == 0);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_cur_invalid_positive) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, 4, SEEK_CUR);
CX_TEST_ASSERT(result != 0);
CX_TEST_ASSERT(buf.pos == 3);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_cur_invalid_negative) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, -4, SEEK_CUR);
CX_TEST_ASSERT(result != 0);
CX_TEST_ASSERT(buf.pos == 3);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_end_zero) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, 0, SEEK_END);
CX_TEST_ASSERT(result == 0);
CX_TEST_ASSERT(buf.pos == 6);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_end_valid) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, -6, SEEK_END);
CX_TEST_ASSERT(result == 0);
CX_TEST_ASSERT(buf.pos == 0);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_end_invalid) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, 1, SEEK_END);
CX_TEST_ASSERT(result != 0);
CX_TEST_ASSERT(buf.pos == 3);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_seek_whence_invalid) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
buf.pos = 3;
CX_TEST_DO {
int result = cxBufferSeek(&buf, 2, 9000);
CX_TEST_ASSERT(result != 0);
CX_TEST_ASSERT(buf.size == 6);
CX_TEST_ASSERT(buf.pos == 3);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_eof_reached) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = buf.pos = 3;
CX_TEST_DO {
CX_TEST_ASSERT(cxBufferEof(&buf));
buf.pos = buf.size - 1;
CX_TEST_ASSERT(!cxBufferEof(&buf));
cxBufferPut(&buf, 'a');
CX_TEST_ASSERT(cxBufferEof(&buf));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_eof_not_reached) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
buf.size = 6;
CX_TEST_DO {
buf.pos = buf.size - 1;
CX_TEST_ASSERT(!cxBufferEof(&buf));
buf.pos = 0;
cxBufferWrite("test", 1, 5, &buf);
CX_TEST_ASSERT(!cxBufferEof(&buf));
}
cxBufferDestroy(&buf);
}
#define TEST_BUFFER_SHIFT_SETUP(buf) \
CxTestingAllocator talloc; \
cx_testing_allocator_init(&talloc); \
CxAllocator *alloc = &talloc.base; \
CxBuffer buf; \
cxBufferInit(&buf, NULL, 16, alloc, CX_BUFFER_DEFAULT); \
memcpy(buf.space, "test____XXXXXXXX", 16); \
buf.capacity = 8; \
buf.pos = 4; \
buf.size = 4
#define TEST_BUFFER_SHIFT_TEARDOWN(buf) \
cxBufferDestroy(&buf); \
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc)); \
cx_testing_allocator_destroy(&talloc)
CX_TEST(test_buffer_shift_left_zero) {
TEST_BUFFER_SHIFT_SETUP(buf);
CX_TEST_DO {
int ret = cxBufferShiftLeft(&buf, 0);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 4);
CX_TEST_ASSERT(buf.size == 4);
CX_TEST_ASSERT(memcmp(buf.space, "test____XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_left_zero_offset_interface) {
TEST_BUFFER_SHIFT_SETUP(buf);
CX_TEST_DO {
int ret = cxBufferShift(&buf, -0);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 4);
CX_TEST_ASSERT(buf.size == 4);
CX_TEST_ASSERT(memcmp(buf.space, "test____XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_left_standard) {
TEST_BUFFER_SHIFT_SETUP(buf);
CX_TEST_DO {
int ret = cxBufferShiftLeft(&buf, 2);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 2);
CX_TEST_ASSERT(buf.size == 2);
CX_TEST_ASSERT(memcmp(buf.space, "stst____XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_left_overshift) {
TEST_BUFFER_SHIFT_SETUP(buf);
CX_TEST_DO {
int ret = cxBufferShiftLeft(&buf, 6);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(memcmp(buf.space, "test____XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_left_overshift_pos_only) {
TEST_BUFFER_SHIFT_SETUP(buf);
buf.pos = 2;
CX_TEST_DO {
int ret = cxBufferShiftLeft(&buf, 3);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 1);
CX_TEST_ASSERT(memcmp(buf.space, "test____XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_left_offset_interface) {
TEST_BUFFER_SHIFT_SETUP(buf);
buf.pos = 3;
CX_TEST_DO {
int ret = cxBufferShift(&buf, -2);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 1);
CX_TEST_ASSERT(buf.size == 2);
CX_TEST_ASSERT(memcmp(buf.space, "stst____XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_left_copy_on_write) {
TEST_BUFFER_SHIFT_SETUP(buf);
buf.flags |= CX_BUFFER_COPY_ON_WRITE;
char *original = buf.space;
CX_TEST_DO {
int ret = cxBufferShiftLeft(&buf, 2);
CX_TEST_ASSERT(0 == (buf.flags & CX_BUFFER_COPY_ON_WRITE));
CX_TEST_ASSERT(0 != (buf.flags & CX_BUFFER_FREE_CONTENTS));
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 2);
CX_TEST_ASSERT(buf.size == 2);
CX_TEST_ASSERT(memcmp(original, "test____XXXXXXXX", 16) == 0);
CX_TEST_ASSERT(memcmp(buf.space, "st", 2) == 0);
cxFree(buf.allocator, original);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_right_zero) {
TEST_BUFFER_SHIFT_SETUP(buf);
CX_TEST_DO {
int ret = cxBufferShiftRight(&buf, 0);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 4);
CX_TEST_ASSERT(buf.size == 4);
CX_TEST_ASSERT(memcmp(buf.space, "test____XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_right_zero_offset_interface) {
TEST_BUFFER_SHIFT_SETUP(buf);
CX_TEST_DO {
int ret = cxBufferShift(&buf, +0);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 4);
CX_TEST_ASSERT(buf.size == 4);
CX_TEST_ASSERT(memcmp(buf.space, "test____XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_right_standard) {
TEST_BUFFER_SHIFT_SETUP(buf);
CX_TEST_DO {
int ret = cxBufferShiftRight(&buf, 3);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(memcmp(buf.space, "testest_XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_right_overshift_discard) {
TEST_BUFFER_SHIFT_SETUP(buf);
CX_TEST_DO {
int ret = cxBufferShiftRight(&buf, 6);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(memcmp(buf.space, "test__teXXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_right_overshift_extend) {
TEST_BUFFER_SHIFT_SETUP(buf);
buf.flags |= CX_BUFFER_AUTO_EXTEND;
CX_TEST_DO {
int ret = cxBufferShiftRight(&buf, 6);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 10);
CX_TEST_ASSERT(buf.size == 10);
CX_TEST_ASSERT(buf.capacity >= 10);
// cannot assert more than 10 bytes because
// the buffer was required to reallocate the space
CX_TEST_ASSERT(memcmp(buf.space, "test__test", 10) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_right_offset_interface) {
TEST_BUFFER_SHIFT_SETUP(buf);
buf.pos = 3;
CX_TEST_DO {
int ret = cxBufferShift(&buf, 2);
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 5);
CX_TEST_ASSERT(buf.size == 6);
CX_TEST_ASSERT(memcmp(buf.space, "tetest__XXXXXXXX", 16) == 0);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_right_copy_on_write) {
TEST_BUFFER_SHIFT_SETUP(buf);
buf.flags |= CX_BUFFER_COPY_ON_WRITE;
char *original = buf.space;
CX_TEST_DO {
int ret = cxBufferShiftRight(&buf, 3);
CX_TEST_ASSERT(0 == (buf.flags & CX_BUFFER_COPY_ON_WRITE));
CX_TEST_ASSERT(0 != (buf.flags & CX_BUFFER_FREE_CONTENTS));
CX_TEST_ASSERT(ret == 0);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(memcmp(original, "test____XXXXXXXX", 16) == 0);
CX_TEST_ASSERT(memcmp(buf.space, "testest", 7) == 0);
cxFree(buf.allocator, original);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
CX_TEST(test_buffer_shift_right_overflow) {
TEST_BUFFER_SHIFT_SETUP(buf);
CX_TEST_DO {
errno = 0;
int ret = cxBufferShiftRight(&buf, SIZE_MAX - 2);
CX_TEST_ASSERT(ret != 0);
CX_TEST_ASSERT(errno == EOVERFLOW);
TEST_BUFFER_SHIFT_TEARDOWN(buf);
}
}
static size_t mock_write_limited_rate(
const void *ptr,
size_t size,
cx_attr_unused size_t nitems,
CxBuffer *buffer
) {
return cxBufferWrite(ptr, size, nitems > 2 ? 2 : nitems, buffer);
}
CX_TEST(test_buffer_write_size_one_fit) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
const char *data = "test";
CX_TEST_DO {
size_t written = cxBufferWrite(data, 1, 4, &buf);
CX_TEST_ASSERT(written == 4);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptest", 8));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_size_one_discard) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
const char *data = "testing";
CX_TEST_DO {
size_t written = cxBufferWrite(data, 1, 7, &buf);
CX_TEST_ASSERT(written == 4);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptest\0", 9));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_size_one_extend) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
buf.flags |= CX_BUFFER_AUTO_EXTEND;
const char *data = "testing";
CX_TEST_DO {
size_t written = cxBufferWrite(data, 1, 7, &buf);
CX_TEST_ASSERT(written == 7);
CX_TEST_ASSERT(buf.size == 11);
CX_TEST_ASSERT(buf.pos == 11);
CX_TEST_ASSERT(buf.capacity >= 11);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptesting", 11));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_copy_on_write) {
CxBuffer buf;
char original[16] = "preparedXXXXXXX";
cxBufferInit(&buf, original, 16, cxDefaultAllocator, CX_BUFFER_COPY_ON_WRITE);
buf.capacity = 8;
buf.size = 8;
buf.pos = 0;
const char *data = "testing";
CX_TEST_DO {
size_t written = cxBufferWrite(data, 1, 7, &buf);
CX_TEST_ASSERT(written == 7);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "testingd", 8));
CX_TEST_ASSERT(0 == memcmp(original, "preparedXXXXXXX\0", 16));
CX_TEST_ASSERT(0 == (buf.flags & CX_BUFFER_COPY_ON_WRITE));
CX_TEST_ASSERT(0 != (buf.flags & CX_BUFFER_FREE_CONTENTS));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_multibyte_fit) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
const char *data = "test";
CX_TEST_DO {
size_t written = cxBufferWrite(data, 2, 2, &buf);
CX_TEST_ASSERT(written == 2);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptest", 8));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_multibyte_discard) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = 4;
buf.pos = 3;
const char *data = "testing";
CX_TEST_DO {
size_t written = cxBufferWrite(data, 2, 4, &buf);
// remember: whole elements are discarded if they do not fit
CX_TEST_ASSERT(written == 2);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "pretest\0", 8));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_multibyte_extend) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = 4;
buf.pos = 3;
buf.flags |= CX_BUFFER_AUTO_EXTEND;
const char *data = "tester";
CX_TEST_DO {
size_t written = cxBufferWrite(data, 2, 3, &buf);
// remember: whole elements are discarded if they do not fit
CX_TEST_ASSERT(written == 3);
CX_TEST_ASSERT(buf.size == 9);
CX_TEST_ASSERT(buf.pos == 9);
CX_TEST_ASSERT(buf.capacity >= 9);
CX_TEST_ASSERT(0 == memcmp(buf.space, "pretester", 9));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_append) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
memcpy(buf.space, "prepXXXX\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = 6;
buf.pos = 4;
CX_TEST_DO {
size_t written = cxBufferAppend("testing", 1, 7, &buf);
CX_TEST_ASSERT(written == 7);
CX_TEST_ASSERT(buf.size == 13);
CX_TEST_ASSERT(buf.pos == 4);
CX_TEST_ASSERT(buf.capacity >= 13);
CX_TEST_ASSERT(0 == memcmp(buf.space, "prepXXtesting", 13));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_append_flush) {
CxBuffer buf, target;
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
cxBufferInit(&target, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
memcpy(buf.space, "prepXXXX", 8);
buf.capacity = 8;
buf.size = 6;
buf.pos = 4;
CxBufferFlushConfig flush;
flush.threshold = 0;
flush.blksize = 4;
flush.blkmax = 1;
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
cxBufferEnableFlushing(&buf, flush);
CX_TEST_DO{
size_t written = cxBufferAppend("testing", 1, 7, &buf);
CX_TEST_ASSERT(written == 7);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERTM(buf.pos == 0, "position not correctly reset");
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(target.size == 6);
CX_TEST_ASSERT(target.pos == 6);
CX_TEST_ASSERT(0 == memcmp(buf.space, "testing", 7));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepXX", 6));
// second test - position only shifted by one block
buf.pos = 6;
written = cxBufferAppend("foo", 1, 3, &buf);
CX_TEST_ASSERT(written == 3);
CX_TEST_ASSERT(buf.size == 6);
CX_TEST_ASSERTM(buf.pos == 2, "position not correctly adjusted");
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(target.size == 10);
CX_TEST_ASSERT(target.pos == 10);
CX_TEST_ASSERT(0 == memcmp(buf.space, "ingfoo", 6));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepXXtest", 10));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_put_fit) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
CX_TEST_DO {
int c = cxBufferPut(&buf, 0x200 | 'a');
CX_TEST_ASSERT(c == 'a');
CX_TEST_ASSERT(buf.size == 5);
CX_TEST_ASSERT(buf.pos == 5);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "prepa\0", 6));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_put_discard) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = 4;
buf.pos = 8;
CX_TEST_DO {
int c = cxBufferPut(&buf, 0x200 | 'a');
CX_TEST_ASSERT(c == EOF);
CX_TEST_ASSERT(buf.size == 4);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "prep\0\0\0\0\0", 9));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_put_extend) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = 4;
buf.pos = 8;
buf.flags |= CX_BUFFER_AUTO_EXTEND;
CX_TEST_DO {
int c = cxBufferPut(&buf, 0x200 | 'a');
CX_TEST_ASSERT(c == 'a');
CX_TEST_ASSERT(buf.size == 9);
CX_TEST_ASSERT(buf.pos == 9);
CX_TEST_ASSERT(buf.capacity >= 9);
CX_TEST_ASSERT(0 == memcmp(buf.space, "prep\0\0\0\0a", 9));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_put_copy_on_write) {
CxBuffer buf;
char original[16] = "preparedXXXXXXX";
cxBufferInit(&buf, original, 16, cxDefaultAllocator, CX_BUFFER_COPY_ON_WRITE);
buf.capacity = 8;
buf.size = 8;
buf.pos = 8;
CX_TEST_DO {
int c = cxBufferPut(&buf, 0x200 | 'a');
CX_TEST_ASSERT(c == EOF);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "prepared", 8));
// discarded, no write happend!
CX_TEST_ASSERT(original == buf.space);
CX_TEST_ASSERT(0 != (buf.flags & CX_BUFFER_COPY_ON_WRITE));
CX_TEST_ASSERT(0 == (buf.flags & CX_BUFFER_FREE_CONTENTS));
// now actually write somewhere
buf.pos = 2;
c = cxBufferPut(&buf, 0x200 | 'a');
CX_TEST_ASSERT(c == 'a');
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 3);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "prapared", 8));
CX_TEST_ASSERT(original != buf.space);
CX_TEST_ASSERT(0 == memcmp(original, "preparedXXXXXXX\0", 16));
CX_TEST_ASSERT(0 == (buf.flags & CX_BUFFER_COPY_ON_WRITE));
CX_TEST_ASSERT(0 != (buf.flags & CX_BUFFER_FREE_CONTENTS));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_put_string_fit) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
const char *data = "test";
CX_TEST_DO {
size_t written = cxBufferPutString(&buf, data);
CX_TEST_ASSERT(written == 4);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptest", 8));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_put_string_discard) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
const char *data = "testing";
CX_TEST_DO {
size_t written = cxBufferPutString(&buf, data);
CX_TEST_ASSERT(written == 4);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptest\0", 9));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_put_string_extend) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
buf.flags |= CX_BUFFER_AUTO_EXTEND;
const char *data = "testing";
CX_TEST_DO {
size_t written = cxBufferPutString(&buf, data);
CX_TEST_ASSERT(written == 7);
CX_TEST_ASSERT(buf.size == 11);
CX_TEST_ASSERT(buf.pos == 11);
CX_TEST_ASSERT(buf.capacity >= 11);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptesting", 11));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_put_string_copy_on_extend) {
CxTestingAllocator talloc;
cx_testing_allocator_init(&talloc);
const CxAllocator *alloc = &talloc.base;
CxBuffer buf;
char original[16] = "preparedXXXXXXX";
CX_TEST_DO {
cxBufferInit(&buf, original, 16, alloc, CX_BUFFER_COPY_ON_EXTEND);
buf.capacity = 8;
buf.size = buf.pos = 4;
size_t written = cxBufferPutString(&buf, "test");
CX_TEST_ASSERT(written == 4);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptest", 8));
CX_TEST_ASSERT(original == buf.space);
written = cxBufferPutString(&buf, "ing");
CX_TEST_ASSERT(written == 3);
CX_TEST_ASSERT(buf.size == 11);
CX_TEST_ASSERT(buf.pos == 11);
CX_TEST_ASSERT(buf.capacity >= 11);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptesting", 11));
CX_TEST_ASSERT(original != buf.space);
CX_TEST_ASSERT(0 == memcmp(original, "preptestXXXXXXX\0", 16));
CX_TEST_ASSERT(!cx_testing_allocator_verify(&talloc));
cxBufferDestroy(&buf);
CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
cx_testing_allocator_destroy(&talloc);
}
}
CX_TEST(test_buffer_put_string_copy_on_write) {
CxBuffer buf;
char original[16] = "preparedXXXXXXX";
cxBufferInit(&buf, original, 16, cxDefaultAllocator, CX_BUFFER_COPY_ON_WRITE);
buf.capacity = 8;
buf.size = 8;
buf.pos = 4;
buf.flags |= CX_BUFFER_AUTO_EXTEND;
const char *data = "testing";
CX_TEST_DO {
size_t written = cxBufferPutString(&buf, data);
CX_TEST_ASSERT(written == 7);
CX_TEST_ASSERT(buf.size == 11);
CX_TEST_ASSERT(buf.pos == 11);
CX_TEST_ASSERT(buf.capacity >= 11);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptesting", 11));
CX_TEST_ASSERT(original != buf.space);
CX_TEST_ASSERT(0 == memcmp(original, "preparedXXXXXXX\0", 16));
CX_TEST_ASSERT(0 == (buf.flags & CX_BUFFER_COPY_ON_WRITE));
CX_TEST_ASSERT(0 != (buf.flags & CX_BUFFER_FREE_CONTENTS));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_terminate) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prepAAAAAA\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
const char *data = "test";
CX_TEST_DO {
size_t written = cxBufferPutString(&buf, data);
CX_TEST_ASSERT(0 != cxBufferTerminate(&buf));
CX_TEST_ASSERT(written == 4);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptestAA", 10));
buf.flags |= CX_BUFFER_AUTO_EXTEND;
CX_TEST_ASSERT(0 == cxBufferTerminate(&buf));
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 9);
CX_TEST_ASSERT(buf.capacity > 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preptest\0", 9));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_size_overflow) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
const char *data = "testing";
CX_TEST_DO {
size_t written = cxBufferWrite(data, 8, SIZE_MAX / 4, &buf);
CX_TEST_ASSERT(written == 0);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(buf.pos == 4);
CX_TEST_ASSERT(buf.size == 4);
CX_TEST_ASSERT(0 == memcmp(buf.space, "prep\0", 5));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_capacity_overflow) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "prep\0\0\0\0\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.size = buf.pos = 4;
buf.flags |= CX_BUFFER_AUTO_EXTEND;
const char *data = "testing";
CX_TEST_DO {
size_t written = cxBufferWrite(data, 1, SIZE_MAX - 2, &buf);
CX_TEST_ASSERT(written == 0);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(buf.pos == 4);
CX_TEST_ASSERT(buf.size == 4);
CX_TEST_ASSERT(0 == memcmp(buf.space, "prep\0", 5));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_only_overwrite) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "preptest\0\0\0\0\0\0\0\0", 16);
buf.capacity = 8;
buf.pos = 3;
buf.size = 8;
buf.flags |= CX_BUFFER_AUTO_EXTEND;
CX_TEST_DO {
size_t written = cxBufferWrite("XXX", 2, 2, &buf);
CX_TEST_ASSERT(written == 2);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(0 == memcmp(buf.space, "preXXX\0t", 8));
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_write_flush_at_capacity) {
CxBuffer buf, target;
cxBufferInit(&target, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memset(buf.space, 0, 8);
cxBufferPutString(&buf, "prep");
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 0;
flush.blksize = 32;
flush.blkmax = 1;
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
size_t written = cxBufferWrite("foo", 1, 3, &buf);
CX_TEST_ASSERT(written == 3);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(target.pos == 0);
CX_TEST_ASSERT(target.size == 0);
written = cxBufferWrite("hello", 1, 5, &buf);
CX_TEST_ASSERT(written == 5);
CX_TEST_ASSERT(buf.pos == 5);
CX_TEST_ASSERT(buf.size == 5);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(target.pos == 7);
CX_TEST_ASSERT(target.size == 7);
CX_TEST_ASSERT(0 == memcmp(buf.space, "hello", 5));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoo", 7));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_write_flush_at_threshold) {
CxBuffer buf, target;
cxBufferInit(&target, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
cxBufferPutString(&buf, "prep");
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 16;
flush.blksize = 32;
flush.blkmax = 1;
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
size_t written = cxBufferWrite("foobar", 1, 6, &buf);
CX_TEST_ASSERT(written == 6);
CX_TEST_ASSERT(buf.pos == 10);
CX_TEST_ASSERT(buf.size == 10);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(target.pos == 0);
CX_TEST_ASSERT(target.size == 0);
written = cxBufferWrite("hello world", 1, 11, &buf);
CX_TEST_ASSERT(written == 11);
CX_TEST_ASSERT(buf.pos == 11);
CX_TEST_ASSERT(buf.size == 11);
CX_TEST_ASSERT(buf.capacity == 16);
CX_TEST_ASSERT(target.pos == 10);
CX_TEST_ASSERT(target.size == 10);
CX_TEST_ASSERT(0 == memcmp(buf.space, "hello", 5));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoobar", 10));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_write_flush_rate_limited_and_buffer_too_small) {
// the idea is that the target only accepts two bytes and
// then gives up... accepts another two bytes, gives up, etc.
// and at the same time, the written string is too large for
// the buffer (buffer can take 8, we want to write 13)
CxBuffer buf, target;
cxBufferInit(&target, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
cxBufferPutString(&buf, "prep");
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 0;
flush.blksize = 32;
flush.blkmax = 1;
flush.target = ⌖
flush.wfunc = (cx_write_func)mock_write_limited_rate;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
size_t written = cxBufferWrite("foo", 1, 3, &buf);
CX_TEST_ASSERT(written == 3);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(target.pos == 0);
CX_TEST_ASSERT(target.size == 0);
written = cxBufferWrite("hello, world!", 1, 13, &buf);
// " world!" fits into this buffer, the remaining stuff is flushed out
CX_TEST_ASSERT(written == 13);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(buf.capacity == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, " world!", 7));
CX_TEST_ASSERT(target.pos == 13);
CX_TEST_ASSERT(target.size == 13);
CX_TEST_ASSERT(target.capacity >= 13);
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoohello,", 13));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_write_flush_multibyte) {
// this test case tests that flushing works correctly even when the
// contents in the buffer are currently not aligned with the item size
CxBuffer buf, target;
cxBufferInit(&target, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memset(buf.space, 0, 8);
cxBufferPutString(&buf, "pre");
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 0;
flush.blksize = 4; // test blksize that is not aligned
flush.blkmax = 2; // test with two blocks
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
// first case: string fits after flush
size_t written = cxBufferWrite("foobar", 3, 2, &buf);
CX_TEST_ASSERT(written == 2);
CX_TEST_ASSERT(buf.pos == 6);
CX_TEST_ASSERT(buf.size == 6);
CX_TEST_ASSERT(target.pos == 3);
CX_TEST_ASSERT(target.size == 3);
CX_TEST_ASSERT(0 == memcmp(buf.space, "foobar", 6));
CX_TEST_ASSERT(0 == memcmp(target.space, "pre", 3));
// second case: string does not fit, data is relayed, but only two blocks!
written = cxBufferWrite("bazfooBAR", 3, 3, &buf);
CX_TEST_ASSERT(written == 3);
CX_TEST_ASSERT(buf.pos == 3);
CX_TEST_ASSERT(buf.size == 3);
CX_TEST_ASSERT(target.pos == 15);
CX_TEST_ASSERT(target.size == 15);
CX_TEST_ASSERT(0 == memcmp(buf.space, "BAR", 3));
CX_TEST_ASSERT(0 == memcmp(target.space, "prefoobarbazfoo", 15));
// third case: everything can be relayed, block size is large enough
buf.flush->blkmax = 3;
written = cxBufferWrite("abcdef012", 3, 3, &buf);
CX_TEST_ASSERT(written == 3);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(target.pos == 27);
CX_TEST_ASSERT(target.size == 27);
CX_TEST_ASSERT(0 == memcmp(target.space, "prefoobarbazfooBARabcdef012", 27));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_write_flush_misaligned) {
// this test case tests that flushing works correctly even when the
// contents in the buffer are currently not aligned with the item size
CxBuffer buf, target;
cxBufferInit(&target, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
cxBufferPutString(&buf, "prep");
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 0;
flush.blksize = 32;
flush.blkmax = 1;
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
// first case: string fits after flush
size_t written = cxBufferWrite("foobar", 3, 2, &buf);
CX_TEST_ASSERT(written == 2);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(target.pos == 3);
CX_TEST_ASSERT(target.size == 3);
CX_TEST_ASSERT(0 == memcmp(buf.space, "pfoobar", 7));
CX_TEST_ASSERT(0 == memcmp(target.space, "pre", 3));
// second case: string does not fit, relaying not possible due to misalignment
// string will be truncated (two items fit into buffer, the third does not)
written = cxBufferWrite("bazfoobar", 3, 3, &buf);
CX_TEST_ASSERT(written == 2);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(target.pos == 9);
CX_TEST_ASSERT(target.size == 9);
CX_TEST_ASSERT(0 == memcmp(buf.space, "rbazfoo", 7));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfooba", 9));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_write_flush_target_full) {
CxBuffer buf, target;
// target does NOT auto-extend and can get completely full
cxBufferInit(&target, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
cxBufferPutString(&buf, "prep");
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 0;
flush.blksize = 32;
flush.blkmax = 1;
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
// step one - flush 4 existing bytes, write 6 new bytes
size_t written = cxBufferWrite("foobar", 1, 6, &buf);
CX_TEST_ASSERT(written == 6);
CX_TEST_ASSERT(buf.pos == 6);
CX_TEST_ASSERT(buf.size == 6);
CX_TEST_ASSERT(target.pos == 4);
CX_TEST_ASSERT(target.size == 4);
CX_TEST_ASSERT(0 == memcmp(buf.space, "foobar", 6));
CX_TEST_ASSERT(0 == memcmp(target.space, "prep", 4));
// step two - can only flush 4 more bytes, but rest fits into buffer
written = cxBufferWrite("xyz", 1, 3, &buf);
CX_TEST_ASSERT(written == 3);
CX_TEST_ASSERT(buf.pos == 5);
CX_TEST_ASSERT(buf.size == 5);
CX_TEST_ASSERT(target.pos == 8);
CX_TEST_ASSERT(target.size == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "arxyz", 5));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoob", 8));
// step three - cannot flush more, but can write 3 more bytes
written = cxBufferWrite("123456", 1, 6, &buf);
CX_TEST_ASSERT(written == 3);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(target.pos == 8);
CX_TEST_ASSERT(target.size == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "arxyz123", 8));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoob", 8));
// final test - cannot write anything more
written = cxBufferWrite("baz", 1, 3, &buf);
CX_TEST_ASSERT(written == 0);
CX_TEST_ASSERT(buf.pos == 8);
CX_TEST_ASSERT(buf.size == 8);
CX_TEST_ASSERT(target.pos == 8);
CX_TEST_ASSERT(target.size == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "arxyz123", 8));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoob", 8));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_write_flush_multibyte_target_full) {
CxBuffer buf, target;
cxBufferInit(&target, NULL, 12, cxDefaultAllocator, CX_BUFFER_DEFAULT);
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 12;
flush.blksize = 8;
flush.blkmax = 2;
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
cxBufferPutString(&buf, "preparation");
size_t written = cxBufferWrite("teststring", 2, 5, &buf);
CX_TEST_ASSERT(written == 5);
CX_TEST_ASSERT(buf.pos == 11);
CX_TEST_ASSERT(buf.size == 11);
CX_TEST_ASSERT(target.pos == 10);
CX_TEST_ASSERT(target.size == 10);
CX_TEST_ASSERT(0 == memcmp(buf.space, "nteststring", 11));
CX_TEST_ASSERT(0 == memcmp(target.space, "preparatio", 10));
// pop the misaligned byte from the buffer
cxBufferPop(&buf, 1, 1);
// write three more items, but only one fits into the target and one more into the buffer
written = cxBufferWrite("123456", 2, 3, &buf);
CX_TEST_ASSERT(written == 2);
CX_TEST_ASSERT(buf.pos == 12);
CX_TEST_ASSERT(buf.size == 12);
CX_TEST_ASSERT(target.pos == 12);
CX_TEST_ASSERT(target.size == 12);
CX_TEST_ASSERT(0 == memcmp(buf.space, "eststrin1234", 12));
CX_TEST_ASSERT(0 == memcmp(target.space, "preparationt", 12));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_write_large_data_flush_target_full) {
CxBuffer buf, target;
cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
// simulate that the target is full:
target.pos = target.size = 16;
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 0;
flush.blksize = 32;
flush.blkmax = 1;
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
// write more bytes than the buffer can take, but the target is full
size_t written = cxBufferWrite("foobarfoobar", 1, 12, &buf);
CX_TEST_ASSERT(written == 0);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 0);
CX_TEST_ASSERT(target.pos == 16);
CX_TEST_ASSERT(target.size == 16);
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_write_flush_at_threshold_target_full) {
CxBuffer buf, target;
// target does NOT auto-extend and can get completely full
cxBufferInit(&target, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
// source may auto-extend but flushes at a certain threshold
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
cxBufferPutString(&buf, "prep");
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 16;
flush.blksize = 4;
flush.blkmax = 2;
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
// step one - adding 6 bytes does not exceed the threshold
size_t written = cxBufferWrite("foobar", 1, 6, &buf);
CX_TEST_ASSERT(written == 6);
CX_TEST_ASSERT(buf.pos == 10);
CX_TEST_ASSERT(buf.size == 10);
CX_TEST_ASSERT(target.pos == 0);
CX_TEST_ASSERT(target.size == 0);
CX_TEST_ASSERT(0 == memcmp(buf.space, "prepfoobar", 10));
// step two - adding 8 bytes is two too many, two blocks are flushed
written = cxBufferWrite("12345678", 1, 8, &buf);
CX_TEST_ASSERT(written == 8);
CX_TEST_ASSERT(buf.pos == 10);
CX_TEST_ASSERT(buf.size == 10);
CX_TEST_ASSERT(target.pos == 8);
CX_TEST_ASSERT(target.size == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "ar12345678", 10));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoob", 8));
// step three - cannot flush more, but can write 6 more bytes
written = cxBufferWrite("ABCDEFGH", 1, 8, &buf);
CX_TEST_ASSERT(written == 6);
CX_TEST_ASSERT(buf.pos == 16);
CX_TEST_ASSERT(buf.size == 16);
CX_TEST_ASSERT(target.pos == 8);
CX_TEST_ASSERT(target.size == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "ar12345678ABCDEF", 16));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoob", 8));
// final test - cannot write anything more
written = cxBufferWrite("baz", 1, 3, &buf);
CX_TEST_ASSERT(written == 0);
CX_TEST_ASSERT(buf.pos == 16);
CX_TEST_ASSERT(buf.size == 16);
CX_TEST_ASSERT(target.pos == 8);
CX_TEST_ASSERT(target.size == 8);
CX_TEST_ASSERT(0 == memcmp(buf.space, "ar12345678ABCDEF", 16));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoob", 8));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_pop) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
cxBufferPutString(&buf, "teststring");
CX_TEST_DO {
CX_TEST_ASSERT(buf.pos == 10);
CX_TEST_ASSERT(buf.size == 10);
CX_TEST_ASSERT(cxBufferPop(&buf, 1, 3) == 3);
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.size == 7);
CX_TEST_ASSERT(cxBufferPop(&buf, 2, 2) == 2);
CX_TEST_ASSERT(buf.pos == 3);
CX_TEST_ASSERT(buf.size == 3);
cxBufferPutString(&buf, "1234");
CX_TEST_ASSERT(buf.pos == 7);
CX_TEST_ASSERT(buf.size == 7);
buf.pos = 3;
CX_TEST_ASSERT(cxBufferPop(&buf, 2, 1) == 1);
CX_TEST_ASSERT(buf.pos == 3);
CX_TEST_ASSERT(buf.size == 5);
CX_TEST_ASSERT(cxBufferPop(&buf, 1, 3) == 3);
CX_TEST_ASSERT(buf.pos == 2);
CX_TEST_ASSERT(buf.size == 2);
cxBufferPut(&buf, 'c');
CX_TEST_ASSERT(buf.pos == 3);
CX_TEST_ASSERT(buf.size == 3);
CX_TEST_ASSERT(cxBufferPop(&buf, 2, 2) == 1);
CX_TEST_ASSERT(buf.pos == 1);
CX_TEST_ASSERT(buf.size == 1);
CX_TEST_ASSERT(cxBufferPop(&buf, 1, 3) == 1);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 0);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_flush) {
CxBuffer buf, target;
cxBufferInit(&target, NULL, 8, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
cxBufferInit(&buf, NULL, 8, cxDefaultAllocator, CX_BUFFER_DEFAULT);
cxBufferPutString(&buf, "prepare");
CX_TEST_DO {
CxBufferFlushConfig flush;
flush.threshold = 0;
flush.blksize = 2;
flush.blkmax = 2;
flush.target = ⌖
flush.wfunc = cxBufferWriteFunc;
CX_TEST_ASSERT(0 == cxBufferEnableFlushing(&buf, flush));
CX_TEST_ASSERT(buf.size == 7);
buf.pos = 5;
size_t flushed = cxBufferFlush(&buf);
CX_TEST_ASSERT(flushed == flush.blkmax * flush.blksize);
CX_TEST_ASSERT(buf.pos == 1);
CX_TEST_ASSERT(buf.size == 3);
CX_TEST_ASSERT(target.pos == 4);
CX_TEST_ASSERT(target.size == 4);
CX_TEST_ASSERT(0 == memcmp(buf.space, "are", 3));
CX_TEST_ASSERT(0 == memcmp(target.space, "prep", 4));
flushed = cxBufferFlush(&buf);
CX_TEST_ASSERT(flushed == 1);
CX_TEST_ASSERT(buf.pos == 0);
CX_TEST_ASSERT(buf.size == 2);
CX_TEST_ASSERT(target.pos == 5);
CX_TEST_ASSERT(target.size == 5);
CX_TEST_ASSERT(0 == memcmp(buf.space, "re", 2));
CX_TEST_ASSERT(0 == memcmp(target.space, "prepa", 5));
}
cxBufferDestroy(&buf);
cxBufferDestroy(&target);
}
CX_TEST(test_buffer_get) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "some data\0\0\0\0\0\0\0", 16);
buf.capacity = 12;
buf.size = 9;
buf.pos = 2;
CX_TEST_DO {
CX_TEST_ASSERT(cxBufferGet(&buf) == 'm');
CX_TEST_ASSERT(cxBufferGet(&buf) == 'e');
CX_TEST_ASSERT(cxBufferGet(&buf) == ' ');
CX_TEST_ASSERT(cxBufferGet(&buf) == 'd');
CX_TEST_ASSERT(buf.pos == 6);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_get_eof) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "some data\0\0\0\0\0\0\0", 16);
buf.capacity = 12;
buf.pos = buf.size = 9;
CX_TEST_DO {
CX_TEST_ASSERT(cxBufferGet(&buf) == EOF);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_read) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "some data\0\0\0\0\0\0\0", 16);
buf.capacity = 12;
buf.size = 9;
buf.pos = 2;
CX_TEST_DO {
char target[4];
size_t read = cxBufferRead(&target, 1, 4, &buf);
CX_TEST_ASSERT(read == 4);
CX_TEST_ASSERT(0 == memcmp(&target, "me d", 4));
CX_TEST_ASSERT(buf.pos == 6);
// overflow
errno = 0;
read = cxBufferRead(&target, 4, SIZE_MAX/2, &buf);
CX_TEST_ASSERT(read == 0);
CX_TEST_ASSERT(errno == EOVERFLOW);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_read_oob) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "some data\0\0\0\0\0\0\0", 16);
buf.capacity = 12;
buf.size = 9;
buf.pos = 6;
CX_TEST_DO {
char target[4];
size_t read = cxBufferRead(&target, 1, 4, &buf);
CX_TEST_ASSERT(read == 3);
CX_TEST_ASSERT(0 == memcmp(&target, "ata", 3));
CX_TEST_ASSERT(buf.pos == 9);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_read_oob_multibyte) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "some data\0\0\0\0\0\0\0", 16);
buf.capacity = 12;
buf.size = 9;
buf.pos = 6;
CX_TEST_DO {
char target[4];
target[2] = '\0';
size_t read = cxBufferRead(&target, 2, 2, &buf);
CX_TEST_ASSERT(read == 1);
CX_TEST_ASSERT(0 == memcmp(&target, "at\0", 3));
CX_TEST_ASSERT(buf.pos == 8);
}
cxBufferDestroy(&buf);
}
CX_TEST(test_buffer_read_eof) {
CxBuffer buf;
cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
memcpy(buf.space, "some data\0\0\0\0\0\0\0", 16);
buf.capacity = 12;
buf.size = buf.pos = 9;
CX_TEST_DO {
char target[4];
size_t read = cxBufferRead(&target, 1, 1, &buf);
CX_TEST_ASSERT(read == 0);
CX_TEST_ASSERT(buf.pos == 9);
}
cxBufferDestroy(&buf);
}
CxTestSuite *cx_test_suite_buffer(void) {
CxTestSuite *suite = cx_test_suite_new("buffer");
cx_test_register(suite, test_buffer_init_wrap_space);
cx_test_register(suite, test_buffer_init_wrap_space_auto_extend);
cx_test_register(suite, test_buffer_init_wrap_space_auto_free);
cx_test_register(suite, test_buffer_init_fresh_space);
cx_test_register(suite, test_buffer_init_on_heap);
cx_test_register(suite, test_buffer_create_defaulted_allocator);
cx_test_register(suite, test_buffer_minimum_capacity_sufficient);
cx_test_register(suite, test_buffer_minimum_capacity_extend);
cx_test_register(suite, test_buffer_shrink);
cx_test_register(suite, test_buffer_shrink_copy_on_write);
cx_test_register(suite, test_buffer_shrink_copy_on_extend);
cx_test_register(suite, test_buffer_reserve);
cx_test_register(suite, test_buffer_clear);
cx_test_register(suite, test_buffer_clear_copy_on_write);
cx_test_register(suite, test_buffer_reset);
cx_test_register(suite, test_buffer_seek_set_zero);
cx_test_register(suite, test_buffer_seek_set_valid);
cx_test_register(suite, test_buffer_seek_set_invalid);
cx_test_register(suite, test_buffer_seek_cur_zero);
cx_test_register(suite, test_buffer_seek_cur_valid_positive);
cx_test_register(suite, test_buffer_seek_cur_valid_negative);
cx_test_register(suite, test_buffer_seek_cur_invalid_positive);
cx_test_register(suite, test_buffer_seek_cur_invalid_negative);
cx_test_register(suite, test_buffer_seek_end_zero);
cx_test_register(suite, test_buffer_seek_end_valid);
cx_test_register(suite, test_buffer_seek_end_invalid);
cx_test_register(suite, test_buffer_seek_whence_invalid);
cx_test_register(suite, test_buffer_eof_reached);
cx_test_register(suite, test_buffer_eof_not_reached);
cx_test_register(suite, test_buffer_shift_left_zero);
cx_test_register(suite, test_buffer_shift_left_zero_offset_interface);
cx_test_register(suite, test_buffer_shift_left_standard);
cx_test_register(suite, test_buffer_shift_left_overshift);
cx_test_register(suite, test_buffer_shift_left_overshift_pos_only);
cx_test_register(suite, test_buffer_shift_left_offset_interface);
cx_test_register(suite, test_buffer_shift_left_copy_on_write);
cx_test_register(suite, test_buffer_shift_right_zero);
cx_test_register(suite, test_buffer_shift_right_zero_offset_interface);
cx_test_register(suite, test_buffer_shift_right_standard);
cx_test_register(suite, test_buffer_shift_right_overshift_discard);
cx_test_register(suite, test_buffer_shift_right_overshift_extend);
cx_test_register(suite, test_buffer_shift_right_offset_interface);
cx_test_register(suite, test_buffer_shift_right_copy_on_write);
cx_test_register(suite, test_buffer_shift_right_overflow);
cx_test_register(suite, test_buffer_write_size_one_fit);
cx_test_register(suite, test_buffer_write_size_one_discard);
cx_test_register(suite, test_buffer_write_size_one_extend);
cx_test_register(suite, test_buffer_write_multibyte_fit);
cx_test_register(suite, test_buffer_write_multibyte_discard);
cx_test_register(suite, test_buffer_write_multibyte_extend);
cx_test_register(suite, test_buffer_write_copy_on_write);
cx_test_register(suite, test_buffer_append);
cx_test_register(suite, test_buffer_append_flush);
cx_test_register(suite, test_buffer_put_fit);
cx_test_register(suite, test_buffer_put_discard);
cx_test_register(suite, test_buffer_put_extend);
cx_test_register(suite, test_buffer_put_copy_on_write);
cx_test_register(suite, test_buffer_put_string_fit);
cx_test_register(suite, test_buffer_put_string_discard);
cx_test_register(suite, test_buffer_put_string_extend);
cx_test_register(suite, test_buffer_put_string_copy_on_extend);
cx_test_register(suite, test_buffer_put_string_copy_on_write);
cx_test_register(suite, test_buffer_terminate);
cx_test_register(suite, test_buffer_write_size_overflow);
cx_test_register(suite, test_buffer_write_capacity_overflow);
cx_test_register(suite, test_buffer_write_only_overwrite);
cx_test_register(suite, test_buffer_write_flush_at_capacity);
cx_test_register(suite, test_buffer_write_flush_at_threshold);
cx_test_register(suite, test_buffer_write_flush_at_threshold_target_full);
cx_test_register(suite, test_buffer_write_flush_rate_limited_and_buffer_too_small);
cx_test_register(suite, test_buffer_write_flush_multibyte);
cx_test_register(suite, test_buffer_write_flush_misaligned);
cx_test_register(suite, test_buffer_write_flush_target_full);
cx_test_register(suite, test_buffer_write_flush_multibyte_target_full);
cx_test_register(suite, test_buffer_write_large_data_flush_target_full);
cx_test_register(suite, test_buffer_pop);
cx_test_register(suite, test_buffer_flush);
cx_test_register(suite, test_buffer_get);
cx_test_register(suite, test_buffer_get_eof);
cx_test_register(suite, test_buffer_read);
cx_test_register(suite, test_buffer_read_oob);
cx_test_register(suite, test_buffer_read_oob_multibyte);
cx_test_register(suite, test_buffer_read_eof);
return suite;
}