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91 lines
3.4 KiB
C++
91 lines
3.4 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/TestSuite.h>
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#include <AK/Trie.h>
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TEST_CASE(normal_behaviour)
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{
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Trie<char, String> dictionary('/', "");
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constexpr static const char* data[] { "test", "example", "foo", "foobar" };
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constexpr static const size_t total_chars = 18; // root (1), 'test' (4), 'example' (7), 'foo' (3), 'foobar' (3, "foo" already stored).
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for (auto& entry : data) {
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StringView view { entry };
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auto it = view.begin();
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dictionary.insert(it, view.end(), view, [](auto& parent, auto& it) -> Optional<String> { return String::formatted("{}{}", parent.metadata_value(), *it); });
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}
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size_t i = 0;
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for ([[maybe_unused]] auto& node : dictionary)
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++i;
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EXPECT_EQ(i, total_chars);
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for (auto& entry : data) {
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StringView view { entry };
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auto it = view.begin();
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auto& node = dictionary.traverse_until_last_accessible_node(it, view.end());
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EXPECT(it.is_end());
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EXPECT(node.metadata().has_value());
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EXPECT_EQ(view, node.metadata_value());
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}
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constexpr static const char* test_data_with_prefix_in_dict[] { "testx", "exampley", "fooa", "foobarb", "fox", "text" };
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for (auto& entry : test_data_with_prefix_in_dict) {
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StringView view { entry };
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auto it = view.begin();
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auto& node = dictionary.traverse_until_last_accessible_node(it, view.end());
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EXPECT(!it.is_end());
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EXPECT(node.metadata().has_value());
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EXPECT(view.starts_with(node.metadata_value()));
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}
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}
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TEST_CASE(iterate)
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{
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Trie<int> bunch_of_numbers { 0 };
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Array<int, 64> input;
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for (size_t i = 0; i < input.size(); ++i)
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input[i] = i;
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bunch_of_numbers.insert(input.begin(), input.end());
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// Iteration order is preorder (order between adjacent nodes is not defined, but parents come before children)
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// in this case, the tree is linear.
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size_t i = 0;
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bool is_root = true;
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for (auto& node : bunch_of_numbers) {
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if (is_root) {
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is_root = false;
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continue;
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}
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EXPECT_EQ(input[i], node.value());
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++i;
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}
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}
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TEST_MAIN(Trie)
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