ucx: tests/test_buffer.c@db1c8dfe403a (annotated)

tests/test_buffer.c@db1c8dfe403a (annotated)

tests/test_buffer.c

Thu, 04 Jan 2024 21:05:32 +0100

author: Mike Becker <universe@uap-core.de>
date: Thu, 04 Jan 2024 21:05:32 +0100
changeset 793: db1c8dfe403a
parent 792: 3ca984931e1d
permissions: -rw-r--r--

migrate remaining buffer tests - relates to #342

 /*
  * 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 "cx/buffer.h"
 static CX_TEST_SUBROUTINE(expect_default_flush_config, CxBuffer *buf) {
     CX_TEST_ASSERT(buf->flush_blkmax == 0);
     CX_TEST_ASSERT(buf->flush_blksize == 4096);
     CX_TEST_ASSERT(buf->flush_threshold == SIZE_MAX);
     CX_TEST_ASSERT(buf->flush_func == NULL);
     CX_TEST_ASSERT(buf->flush_target == NULL);
 }
 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_CALL_SUBROUTINE(expect_default_flush_config, &buf);
         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_CALL_SUBROUTINE(expect_default_flush_config, &buf);
         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_CALL_SUBROUTINE(expect_default_flush_config, &buf);
         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_CALL_SUBROUTINE(expect_default_flush_config, &buf);
         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_CALL_SUBROUTINE(expect_default_flush_config, buf);
         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_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);
         cxBufferDestroy(&buf);
         CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
     }
     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_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, 6, 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, 3, 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);
         // the (past-the-)end position is always invalid
         CX_TEST_ASSERT(result != 0);
         CX_TEST_ASSERT(buf.pos == 3);
     }
     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_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);
     }
 }
 static size_t mock_write_limited_rate(
         void const *ptr,
         size_t size,
         __attribute__((unused)) size_t nitems,
         CxBuffer *buffer
 ) {
     // simulate limited target drain capacity
     static bool full = false;
     if (full) {
         full = false;
         return 0;
     } else {
         full = true;
         return cxBufferWrite(ptr, size, nitems > 2 ? 2 : nitems, buffer);
     }
 }
 CX_TEST(test_buffer_write_size_one_fit) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_size_one_discard) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_size_one_extend) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_multibyte_fit) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_multibyte_discard) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_multibyte_extend) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_put_fit) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_put_discard) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_put_extend) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_put_string_fit) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_put_string_discard) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_put_string_extend) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_size_overflow) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_capacity_overflow) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_only_overwrite) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_flush_at_capacity) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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.flush_target = &target;
     buf.flush_func = (cx_write_func)cxBufferWrite;
     buf.flush_blkmax = 1;
     CX_TEST_DO {
         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 == 0);
         CX_TEST_ASSERT(buf.size == 0);
         CX_TEST_ASSERT(buf.capacity == 8);
         CX_TEST_ASSERT(target.pos == 12);
         CX_TEST_ASSERT(target.size == 12);
         CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoohello", 12));
     }
     cxBufferDestroy(&buf);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_flush_at_threshold) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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.flush_target = &target;
     buf.flush_func = (cx_write_func)cxBufferWrite;
     buf.flush_blkmax = 1;
     buf.flush_threshold = 12;
     buf.flags |= CX_BUFFER_AUTO_EXTEND;
     CX_TEST_DO {
         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 >= 10);
         CX_TEST_ASSERT(buf.capacity <= 12);
         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 == 0);
         CX_TEST_ASSERT(buf.size == 0);
         CX_TEST_ASSERT(buf.capacity <= 12);
         CX_TEST_ASSERT(target.pos == 15);
         CX_TEST_ASSERT(target.size == 15);
         CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoobarhello", 15));
     }
     cxBufferDestroy(&buf);
     cxBufferDestroy(&target);
 }
 CX_TEST(test_buffer_write_flush_rate_limited) {
     CxBuffer buf, target;
     cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
     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.flush_target = &target;
     buf.flush_blkmax = 1;
     // limit the rate of the flush function and the capacity of the target
     buf.flush_func = (cx_write_func) mock_write_limited_rate;
     target.capacity = 16;
     target.flags &= ~CX_BUFFER_AUTO_EXTEND;
     CX_TEST_DO {
         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 == 16);
         CX_TEST_ASSERT(0 == memcmp(target.space, "prepfoohello,", 13));
     }
     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);
     }
     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_minimum_capacity_sufficient);
     cx_test_register(suite, test_buffer_minimum_capacity_extend);
     cx_test_register(suite, test_buffer_clear);
     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_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_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_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_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_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_rate_limited);
     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;
 }

Mercurial > hg > ucx / annotate

tests/test_buffer.c@db1c8dfe403a (annotated)

tests/test_buffer.c