test/test_tree.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
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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/tree.h"
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30 #include <gtest/gtest.h>
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31
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32 struct TestNode {
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33 TestNode *parent = nullptr;
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34 TestNode *prev = nullptr;
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35 TestNode *next = nullptr;
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36
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37 TestNode *children_begin = nullptr;
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38 TestNode *children_end = nullptr;
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39 };
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40
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41 TEST(Tree, cx_tree_add_sibling) {
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42 // prepare test tree
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43 TestNode root, a;
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44 root.children_begin = &a;
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45 root.children_end = &a;
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46 a.parent = &root;
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47
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48 // new test nodes
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49 TestNode b, c;
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50
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51 // test
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52 cx_tree_add_sibling(&a, offsetof(TestNode, prev), offsetof(TestNode, next), offsetof(TestNode, parent), &b);
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53 EXPECT_EQ(b.parent, &root);
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54 EXPECT_EQ(b.prev, &a);
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55 EXPECT_EQ(b.next, nullptr);
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56 EXPECT_EQ(a.next, &b);
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57
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58 cx_tree_add_sibling(&a, -1, offsetof(TestNode, next), -1, &c);
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59 EXPECT_EQ(c.parent, nullptr);
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60 EXPECT_EQ(c.prev, nullptr);
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61 EXPECT_EQ(c.next, nullptr);
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62 EXPECT_EQ(b.next, &c);
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63 }
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64
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65 TEST(Tree, cx_tree_add_child) {
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66 TestNode root, a, b, c, a1;
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67
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68 cx_tree_add_child(
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69 (void **) &root.children_begin,
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70 (void **) &root.children_end,
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71 offsetof(TestNode, prev),
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72 offsetof(TestNode, next),
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73 &a,
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74 offsetof(TestNode, parent),
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75 &root);
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76 EXPECT_EQ(root.children_begin, &a);
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77 EXPECT_EQ(root.children_end, &a);
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78 EXPECT_EQ(a.parent, &root);
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79 EXPECT_EQ(a.prev, nullptr);
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80 EXPECT_EQ(a.next, nullptr);
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81
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82 cx_tree_add_child(
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83 (void **) &root.children_begin,
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84 (void **) &root.children_end,
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85 offsetof(TestNode, prev),
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86 offsetof(TestNode, next),
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87 &b,
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88 offsetof(TestNode, parent),
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89 &root);
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90 EXPECT_EQ(root.children_begin, &a);
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91 EXPECT_EQ(root.children_begin->next, &b);
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92 EXPECT_EQ(root.children_end, &b);
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93 EXPECT_EQ(b.parent, &root);
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94 EXPECT_EQ(b.prev, &a);
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95
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96 cx_tree_add_child(
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97 (void **) &root.children_begin,
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98 nullptr,
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99 -1,
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100 offsetof(TestNode, next),
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101 &c,
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102 -1,
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103 &root);
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104 EXPECT_EQ(root.children_end, &b); // children_end unchanged
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105 EXPECT_EQ(b.next, &c);
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106 EXPECT_EQ(c.prev, nullptr);
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107 EXPECT_EQ(c.next, nullptr);
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108 EXPECT_EQ(c.parent, nullptr);
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109
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110 cx_tree_add_child(
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111 (void **) &a.children_begin,
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112 (void **) &a.children_end,
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113 offsetof(TestNode, prev),
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114 offsetof(TestNode, next),
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115 &a1,
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116 offsetof(TestNode, parent),
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117 &a);
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118 EXPECT_EQ(a.children_begin, &a1);
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119 EXPECT_EQ(a1.parent, &a);
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120 EXPECT_EQ(root.children_begin, &a);
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121 EXPECT_EQ(root.children_begin->children_begin, &a1);
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122 }

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