tests/test_tree.c

Thu, 25 Jan 2024 22:05:48 +0100

author
Mike Becker <universe@uap-core.de>
date
Thu, 25 Jan 2024 22:05:48 +0100
changeset 819
5da2ead43077
parent 816
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child 826
21840975d541
permissions
-rw-r--r--

rename cx_array_copy_result to just cx_array_result

816
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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 2023 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
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31 #include "cx/test.h"
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32
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33 typedef struct tree_node {
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34 struct tree_node *parent;
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35 struct tree_node *next;
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36 struct tree_node *prev;
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37 struct tree_node *children;
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38 int data;
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39 } tree_node;
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40
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41 #define tree_node_layout \
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42 offsetof(tree_node, parent), offsetof(tree_node, children), \
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43 offsetof(tree_node, prev), offsetof(tree_node, next)
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44
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45 CX_TEST(test_tree_link_new_child) {
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46 tree_node parent = {0};
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47 tree_node child = {0};
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48
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49 CX_TEST_DO {
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50 cx_tree_link(&parent, &child, tree_node_layout);
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51 CX_TEST_ASSERT(parent.next == NULL);
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52 CX_TEST_ASSERT(parent.prev == NULL);
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53 CX_TEST_ASSERT(parent.parent == NULL);
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54 CX_TEST_ASSERT(parent.children == &child);
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55 CX_TEST_ASSERT(child.parent == &parent);
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56 CX_TEST_ASSERT(child.next == NULL);
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57 CX_TEST_ASSERT(child.prev == NULL);
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58 CX_TEST_ASSERT(child.children == NULL);
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59 }
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60 }
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61
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62 CX_TEST(test_tree_link_add_child) {
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63 tree_node parent = {0};
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64 tree_node child1 = {0};
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65 tree_node child2 = {0};
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66 tree_node child3 = {0};
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67
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68 CX_TEST_DO {
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69 cx_tree_link(&parent, &child1, tree_node_layout);
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70 cx_tree_link(&parent, &child2, tree_node_layout);
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71 cx_tree_link(&parent, &child3, tree_node_layout);
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72 CX_TEST_ASSERT(parent.next == NULL);
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73 CX_TEST_ASSERT(parent.prev == NULL);
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74 CX_TEST_ASSERT(parent.parent == NULL);
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75 CX_TEST_ASSERT(parent.children == &child3);
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76
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77 CX_TEST_ASSERT(child1.parent == &parent);
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78 CX_TEST_ASSERT(child2.parent == &parent);
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79 CX_TEST_ASSERT(child3.parent == &parent);
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80 CX_TEST_ASSERT(child1.children == NULL);
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81 CX_TEST_ASSERT(child2.children == NULL);
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82 CX_TEST_ASSERT(child3.children == NULL);
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83
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84 CX_TEST_ASSERT(child3.prev == NULL);
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85 CX_TEST_ASSERT(child3.next == &child2);
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86 CX_TEST_ASSERT(child2.prev == &child3);
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87 CX_TEST_ASSERT(child2.next == &child1);
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88 CX_TEST_ASSERT(child1.prev == &child2);
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89 CX_TEST_ASSERT(child1.next == NULL);
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90 }
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91 }
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92
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93 CX_TEST(test_tree_link_move_to_other_parent) {
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94 tree_node parent = {0};
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95 tree_node child1 = {0};
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96 tree_node child2 = {0};
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97 tree_node child3 = {0};
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98 cx_tree_link(&parent, &child1, tree_node_layout);
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99 cx_tree_link(&parent, &child2, tree_node_layout);
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100 cx_tree_link(&parent, &child3, tree_node_layout);
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101
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102 CX_TEST_DO {
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103 cx_tree_link(&child3, &child2, tree_node_layout);
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104
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105 CX_TEST_ASSERT(parent.next == NULL);
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106 CX_TEST_ASSERT(parent.prev == NULL);
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107 CX_TEST_ASSERT(parent.parent == NULL);
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108 CX_TEST_ASSERT(parent.children == &child3);
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109
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110 CX_TEST_ASSERT(child1.parent == &parent);
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111 CX_TEST_ASSERT(child2.parent == &child3);
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112 CX_TEST_ASSERT(child3.parent == &parent);
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113 CX_TEST_ASSERT(child1.children == NULL);
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114 CX_TEST_ASSERT(child2.children == NULL);
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115 CX_TEST_ASSERT(child3.children == &child2);
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116
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117 CX_TEST_ASSERT(child3.prev == NULL);
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118 CX_TEST_ASSERT(child3.next == &child1);
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119 CX_TEST_ASSERT(child1.prev == &child3);
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120 CX_TEST_ASSERT(child1.next == NULL);
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121
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122 CX_TEST_ASSERT(child2.prev == NULL);
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123 CX_TEST_ASSERT(child2.next == NULL);
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124 }
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125 }
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126
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127 CX_TEST(test_tree_unlink) {
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128 tree_node parent = {0};
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129 tree_node child1 = {0};
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130 tree_node child2 = {0};
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131 tree_node child3 = {0};
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132 cx_tree_link(&parent, &child1, tree_node_layout);
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133 cx_tree_link(&parent, &child3, tree_node_layout);
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134 cx_tree_link(&child3, &child2, tree_node_layout);
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135
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136 CX_TEST_DO {
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137 cx_tree_unlink(&child3, tree_node_layout);
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138
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139 CX_TEST_ASSERT(parent.next == NULL);
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140 CX_TEST_ASSERT(parent.prev == NULL);
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141 CX_TEST_ASSERT(parent.parent == NULL);
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142 CX_TEST_ASSERT(parent.children == &child1);
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143
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144 CX_TEST_ASSERT(child1.parent == &parent);
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145 CX_TEST_ASSERT(child1.children == NULL);
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146 CX_TEST_ASSERT(child1.prev == NULL);
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147 CX_TEST_ASSERT(child1.next == NULL);
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148
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149 // child 3 is unlinked
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150 CX_TEST_ASSERT(child3.parent == NULL);
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151 CX_TEST_ASSERT(child3.prev == NULL);
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152 CX_TEST_ASSERT(child3.next == NULL);
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153
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154 // child 2 is still child of the unlinked child 3
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155 CX_TEST_ASSERT(child3.children == &child2);
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156 CX_TEST_ASSERT(child2.parent == &child3);
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157 CX_TEST_ASSERT(child2.children == NULL);
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158 CX_TEST_ASSERT(child2.prev == NULL);
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159 CX_TEST_ASSERT(child2.next == NULL);
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160 }
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161 }
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162
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163 CxTestSuite *cx_test_suite_tree_low_level(void) {
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164 CxTestSuite *suite = cx_test_suite_new("tree (low level)");
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165
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166 cx_test_register(suite, test_tree_link_new_child);
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167 cx_test_register(suite, test_tree_link_add_child);
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168 cx_test_register(suite, test_tree_link_move_to_other_parent);
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169 cx_test_register(suite, test_tree_unlink);
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170
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171 return suite;
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172 }

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