test/test_allocator.cpp

Wed, 18 May 2022 16:26:32 +0200

author
Mike Becker <universe@uap-core.de>
date
Wed, 18 May 2022 16:26:32 +0200
changeset 549
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permissions
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#189 declare basic map functions

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include "cx/allocator.h"
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30 #include <gtest/gtest.h>
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31
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32 TEST(Allocator, DefaultAllocator) {
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33 cx_allocator_class *clazz = cxDefaultAllocator->cl;
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34 ASSERT_NE(clazz, nullptr);
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35 }
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36
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37 TEST(Allocator, DefaultMalloc) {
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38 void *test = cxMalloc(cxDefaultAllocator, 16);
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39 ASSERT_NE(test, nullptr);
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40 free(test);
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41 }
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42
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43 TEST(Allocator, DefaultRealloc) {
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44 void *test = calloc(8, 1);
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45 memcpy(test, "Test", 5);
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46 test = cxRealloc(cxDefaultAllocator, test, 16);
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47 ASSERT_NE(test, nullptr);
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48 EXPECT_STREQ(reinterpret_cast<char *>(test), "Test");
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49 free(test);
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50 }
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51
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52 TEST(Allocator, Reallocate) {
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53 void *test = calloc(8, 1);
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54 memcpy(test, "Test", 5);
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55 int ret = cxReallocate(cxDefaultAllocator, &test, 16);
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56 EXPECT_EQ(ret, 0);
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57 ASSERT_NE(test, nullptr);
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58 EXPECT_STREQ(reinterpret_cast<char *>(test), "Test");
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59 free(test);
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60 }
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61
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62 TEST(Allocator, DefaultCalloc) {
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63 char *test = reinterpret_cast<char *>(cxCalloc(cxDefaultAllocator, 8, 2));
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64 ASSERT_NE(test, nullptr);
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65 for (int i = 0; i < 16; i++) ASSERT_EQ(test[i], 0);
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66 free(test);
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67 }
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68
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69 TEST(Allocator, DefaultFree) {
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70 void *test = malloc(16);
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71 EXPECT_NO_FATAL_FAILURE(
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72 cxFree(cxDefaultAllocator, test);
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73 );
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74 }
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75
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76 TEST(Allocator, FailingReallocate) {
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77 // Mock an allocator that always returns nullptr on realloc
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78 cx_allocator_class mock_cl;
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79 mock_cl.realloc = [](
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80 [[maybe_unused]]void *p,
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81 [[maybe_unused]]void *d,
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82 [[maybe_unused]]size_t n
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83 ) -> void * { return nullptr; };
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84 cx_allocator_s mock{&mock_cl, nullptr};
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85
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86 void *test = calloc(8, 1);
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87 memcpy(test, "Test", 5);
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88 void *original = test;
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89 int ret = cxReallocate(&mock, &test, 16);
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90 // non-zero return code because of the failure
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91 EXPECT_NE(ret, 0);
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92 // the test pointer was not changed and still points to the same memory
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93 EXPECT_EQ(test, original);
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94 EXPECT_STREQ(reinterpret_cast<char *>(test), "Test");
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95 free(test);
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96 }

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