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◆ main openmsx / src / unittest / subrange_between_test.cc
1.5 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
e8555c89 Andy McCall 1 
#include "catch.hpp"
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#include "subrange_between.hh"
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#include <vector>
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#include <string>
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TEST_CASE("subrange_between: integer vector", "[subrange_between]")
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{
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	std::vector v = {1, 3, 5, 7, 9, 11};
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	SECTION("middle range") {
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		auto sub = subrange_between(v, 4, 10);
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		std::vector<int> result(sub.begin(), sub.end());
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		CHECK(result == std::vector{5, 7, 9});
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	}
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	SECTION("full range") {
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		auto sub = subrange_between(v, 0, 12);
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		std::vector<int> result(sub.begin(), sub.end());
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		CHECK(result == v);
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	}
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	SECTION("empty range") {
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		auto sub = subrange_between(v, 6, 7);
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		CHECK(sub.empty());
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	}
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	SECTION("range before vector") {
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		auto sub = subrange_between(v, -10, 0);
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		CHECK(sub.empty());
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	}
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	SECTION("single element") {
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		auto sub = subrange_between(v, 5, 6);
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		std::vector<int> result(sub.begin(), sub.end());
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		CHECK(result == std::vector{5});
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	}
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}
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struct Item {
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	int key;
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	std::string name;
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};
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TEST_CASE("subrange_between: structs with member pointer projection", "[subrange_between]")
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{
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	std::vector<Item> v = {{1, "a"}, {3, "b"}, {5, "c"}, {7, "d"}, {9, "e"}};
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	auto sub = subrange_between(v, 4, 8, {}, &Item::key);
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	std::vector<int> keys;
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	for (auto& item : sub) keys.push_back(item.key);
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	CHECK(keys == std::vector{5,7});
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}
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TEST_CASE("subrange_between: custom comparator", "[subrange_between]")
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{
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	std::vector v = {11, 9, 7, 5, 3, 1}; // descending order
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	auto sub = subrange_between(v, 10, 4, std::greater{});
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	std::vector<int> result(sub.begin(), sub.end());
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	CHECK(result == std::vector{9, 7, 5});
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}