54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
#include <gtest/gtest.h>
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#include <type_traits>
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#include <utility>
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#include "renderive/base/node/Node.hpp"
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struct Multiway_Node_Test_Owner {};
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struct Multiway_Node_Test_Tag {};
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using Multiway_Node_Test_Type = Multiway_Node<Multiway_Node_Test_Owner, Multiway_Node_Test_Tag>;
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static_assert(Multiway_Node_Type<Multiway_Node_Test_Type, Multiway_Node_Test_Owner, Multiway_Node_Test_Tag>);
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static_assert(!std::same_as<Multiway_Node<Multiway_Node_Test_Owner>, Multiway_Node_Test_Type>);
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static_assert(std::same_as<decltype(std::declval<const Multiway_Node_Test_Type&>().child(0)), const Multiway_Node_Test_Type&>);
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TEST(multiway_node_test, reparents_child_and_preserves_order) {
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Multiway_Node_Test_Owner first_owner;
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Multiway_Node_Test_Owner second_owner;
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Multiway_Node_Test_Owner third_owner;
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Multiway_Node_Test_Type root;
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Multiway_Node_Test_Type first(&first_owner);
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Multiway_Node_Test_Type second(&second_owner);
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Multiway_Node_Test_Type third(&third_owner);
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root.append_child(first);
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root.append_child(second);
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first.append_child(third);
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EXPECT_EQ(root.child_count(), 2);
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EXPECT_EQ(&first.child(0), &third);
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EXPECT_EQ(third.parent(), &first);
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second.append_child(third);
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EXPECT_TRUE(first.children_empty());
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EXPECT_EQ(third.parent(), &second);
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}
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TEST(multiway_node_test, rejects_cycles) {
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Multiway_Node_Test_Type root;
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Multiway_Node_Test_Type child;
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root.append_child(child);
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EXPECT_THROW(child.append_child(root), std::invalid_argument);
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}
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TEST(multiway_node_test, reorders_existing_child_without_invalid_iterator) {
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Multiway_Node_Test_Type root;
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Multiway_Node_Test_Type first;
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Multiway_Node_Test_Type second;
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root.append_child(first);
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root.append_child(second);
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root.append_child(first);
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EXPECT_EQ(root.child_count(), 2);
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EXPECT_EQ(&root.child(0), &second);
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EXPECT_EQ(&root.child(1), &first);
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root.insert_child(0, first);
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EXPECT_EQ(&root.child(0), &first);
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EXPECT_EQ(&root.child(1), &second);
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}
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TEST(multiway_node_test, rejects_child_index_past_end) {
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Multiway_Node_Test_Type root;
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Multiway_Node_Test_Type child;
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EXPECT_THROW(root.insert_child(1, child), std::out_of_range);
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}
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