ucx: tests/test_buffer.cpp@3ca984931e1d (annotated)

tests/test_buffer.cpp@3ca984931e1d (annotated)

tests/test_buffer.cpp

Wed, 03 Jan 2024 22:17:40 +0100

author: Mike Becker <universe@uap-core.de>
date: Wed, 03 Jan 2024 22:17:40 +0100
changeset 792: 3ca984931e1d
parent 789: 9b2f5661bebd
permissions: -rw-r--r--

migrate more buffer tests - relates to #342

only read and write tests are remaining now

 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
  * Copyright 2021 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/buffer.h"
 #include <gtest/gtest.h>
 #include "util_allocator.h"
 class BufferWrite : public ::testing::Test {
 protected:
     CxBuffer buf{}, target{};
     void SetUp() override {
         cxBufferInit(&target, NULL, 16, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND);
         cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
         buf.capacity = 8; // artificially reduce capacity to check OOB writes
         memset(buf.space, 0, 16);
         memcpy(buf.space, "prep", 4);
         buf.size = buf.pos = 4;
     }
     void TearDown() override {
         cxBufferDestroy(&buf);
         cxBufferDestroy(&target);
     }
     void enableFlushing() {
         buf.flush_target = &target;
         buf.flush_func = reinterpret_cast<cx_write_func>(cxBufferWrite);
         buf.flush_blkmax = 1;
     }
 };
 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);
     }
 }
 TEST_F(BufferWrite, SizeOneFit) {
     const char *data = "test";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     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);
     EXPECT_EQ(memcmp(buf.space, "preptest", 8), 0);
 }
 TEST_F(BufferWrite, SizeOneDiscard) {
     const char *data = "testing";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     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);
     EXPECT_EQ(memcmp(buf.space, "preptest\0", 9), 0);
 }
 TEST_F(BufferWrite, SizeOneExtend) {
     buf.flags |= CX_BUFFER_AUTO_EXTEND;
     const char *data = "testing";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     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);
     EXPECT_GE(buf.capacity, 11);
     EXPECT_EQ(memcmp(buf.space, "preptesting", 11), 0);
 }
 TEST_F(BufferWrite, MultibyteFit) {
     const char *data = "test";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     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);
     EXPECT_EQ(memcmp(buf.space, "preptest", 8), 0);
 }
 TEST_F(BufferWrite, MultibyteDiscard) {
     const char *data = "testing";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.size == 4);
     buf.pos = 3;
     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);
     EXPECT_EQ(memcmp(buf.space, "pretest\0", 8), 0);
 }
 TEST_F(BufferWrite, MultibyteExtend) {
     buf.flags |= CX_BUFFER_AUTO_EXTEND;
     const char *data = "tester";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.size == 4);
     buf.pos = 3;
     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);
     EXPECT_GE(buf.capacity, 9);
     EXPECT_EQ(memcmp(buf.space, "pretester", 9), 0);
 }
 TEST_F(BufferWrite, PutcWrapperFit) {
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     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);
     EXPECT_EQ(memcmp(buf.space, "prepa\0", 6), 0);
 }
 TEST_F(BufferWrite, PutcWrapperDiscard) {
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.size == 4);
     buf.pos = 8;
     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);
     EXPECT_EQ(memcmp(buf.space, "prep\0\0\0\0\0", 9), 0);
 }
 TEST_F(BufferWrite, PutcWrapperExtend) {
     buf.flags |= CX_BUFFER_AUTO_EXTEND;
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.size == 4);
     buf.pos = 8;
     int c = cxBufferPut(&buf, 0x200 | 'a');
     CX_TEST_ASSERT(c == 'a');
     CX_TEST_ASSERT(buf.size == 9);
     CX_TEST_ASSERT(buf.pos == 9);
     EXPECT_GE(buf.capacity, 9);
     EXPECT_EQ(memcmp(buf.space, "prep\0\0\0\0a", 9), 0);
 }
 TEST_F(BufferWrite, PutStringWrapperFit) {
     const char *data = "test";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     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);
     EXPECT_EQ(memcmp(buf.space, "preptest", 8), 0);
 }
 TEST_F(BufferWrite, PutStringWrapperDiscard) {
     const char *data = "testing";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     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);
     EXPECT_EQ(memcmp(buf.space, "preptest\0", 9), 0);
 }
 TEST_F(BufferWrite, PutStringWrapperExtend) {
     buf.flags |= CX_BUFFER_AUTO_EXTEND;
     const char *data = "testing";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     size_t written = cxBufferPutString(&buf, data);
     CX_TEST_ASSERT(written == 7);
     CX_TEST_ASSERT(buf.size == 11);
     CX_TEST_ASSERT(buf.pos == 11);
     EXPECT_GE(buf.capacity, 11);
     EXPECT_EQ(memcmp(buf.space, "preptesting", 11), 0);
 }
 TEST_F(BufferWrite, MultOverflow) {
     const char *data = "testing";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     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);
     EXPECT_EQ(memcmp(buf.space, "prep\0", 5), 0);
 }
 TEST_F(BufferWrite, MaxCapaOverflow) {
     buf.flags |= CX_BUFFER_AUTO_EXTEND;
     const char *data = "testing";
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     CX_TEST_ASSERT(buf.size == 4);
     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);
     EXPECT_EQ(memcmp(buf.space, "prep\0", 5), 0);
 }
 TEST_F(BufferWrite, OnlyOverwrite) {
     buf.flags |= CX_BUFFER_AUTO_EXTEND;
     CX_TEST_ASSERT(buf.capacity == 8);
     memcpy(buf.space, "preptest", 8);
     buf.pos = 3;
     buf.size = 8;
     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);
     EXPECT_EQ(memcmp(buf.space, "preXXX\0t", 8), 0);
 }
 TEST_F(BufferWrite, FlushAtCapacity) {
     enableFlushing();
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     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);
     EXPECT_EQ(memcmp(target.space, "prepfoohello", 12), 0);
 }
 TEST_F(BufferWrite, FlushAtThreshold) {
     enableFlushing();
     buf.flush_threshold = 12;
     buf.flags |= CX_BUFFER_AUTO_EXTEND;
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     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);
     ASSERT_GE(buf.capacity, 10);
     ASSERT_LE(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);
     EXPECT_LE(buf.capacity, 12);
     CX_TEST_ASSERT(target.pos == 15);
     CX_TEST_ASSERT(target.size == 15);
     EXPECT_EQ(memcmp(target.space, "prepfoobarhello", 15), 0);
 }
 TEST_F(BufferWrite, FlushRateLimited) {
     enableFlushing();
     // limit the rate of the flush function and the capacity of the target
     target.capacity = 16;
     target.flags &= ~CX_BUFFER_AUTO_EXTEND;
     buf.flush_func = (cx_write_func) mock_write_limited_rate;
     CX_TEST_ASSERT(buf.capacity == 8);
     CX_TEST_ASSERT(buf.pos == 4);
     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);
     EXPECT_EQ(memcmp(buf.space, " world!", 7), 0);
     CX_TEST_ASSERT(target.pos == 13);
     CX_TEST_ASSERT(target.size == 13);
     CX_TEST_ASSERT(target.capacity == 16);
     EXPECT_EQ(memcmp(target.space, "prepfoohello,", 13), 0);
 }
 class BufferRead : public ::testing::Test {
 protected:
     CxBuffer buf{};
     void SetUp() override {
         cxBufferInit(&buf, NULL, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT);
         buf.capacity = 8; // artificially reduce capacity to check OOB writes
         memset(buf.space, 0, 16);
         memcpy(buf.space, "some data", 9);
         buf.size = 9;
     }
     void TearDown() override {
         cxBufferDestroy(&buf);
     }
 };
 TEST_F(BufferRead, GetByte) {
     buf.pos = 2;
     EXPECT_EQ(cxBufferGet(&buf), 'm');
     EXPECT_EQ(cxBufferGet(&buf), 'e');
     EXPECT_EQ(cxBufferGet(&buf), ' ');
     EXPECT_EQ(cxBufferGet(&buf), 'd');
     CX_TEST_ASSERT(buf.pos == 6);
 }
 TEST_F(BufferRead, GetEof) {
     buf.pos = buf.size;
     EXPECT_EQ(cxBufferGet(&buf), EOF);
 }
 TEST_F(BufferRead, ReadWithinBounds) {
     buf.pos = 2;
     char target[4];
     auto read = cxBufferRead(&target, 1, 4, &buf);
     CX_TEST_ASSERT(read == 4);
     EXPECT_EQ(memcmp(&target, "me d", 4), 0);
     CX_TEST_ASSERT(buf.pos == 6);
 }
 TEST_F(BufferRead, ReadOutOfBounds) {
     buf.pos = 6;
     char target[4];
     auto read = cxBufferRead(&target, 1, 4, &buf);
     CX_TEST_ASSERT(read == 3);
     EXPECT_EQ(memcmp(&target, "ata", 3), 0);
     CX_TEST_ASSERT(buf.pos == 9);
 }
 TEST_F(BufferRead, ReadOutOfBoundsMultibyte) {
     buf.pos = 6;
     char target[4];
     target[2] = '\0';
     auto read = cxBufferRead(&target, 2, 2, &buf);
     CX_TEST_ASSERT(read == 1);
     EXPECT_EQ(memcmp(&target, "at\0", 3), 0);
     CX_TEST_ASSERT(buf.pos == 8);
 }
 TEST_F(BufferRead, ReadEof) {
     buf.pos = 9;
     char target[4];
     auto read = cxBufferRead(&target, 1, 1, &buf);
     CX_TEST_ASSERT(read == 0);
     CX_TEST_ASSERT(buf.pos == 9);
 }

Mercurial > hg > ucx / annotate

tests/test_buffer.cpp@3ca984931e1d (annotated)

tests/test_buffer.cpp