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◆ main openmsx / src / unittest / view_test.cc
2.0 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 "view.hh"
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#include "hash_map.hh"
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#include "stl.hh"
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#include "xrange.hh"
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#include "StringOp.hh"
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#include <algorithm>
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#include <list>
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#include <map>
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#include <string>
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#include <tuple>
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#include <vector>
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using namespace view;
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static std::vector<int> getVector(int n)
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{
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	return to_vector(xrange(n));
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}
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TEST_CASE("view::drop_back random-access-range")
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{
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	SECTION("empty") {
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		std::vector<int> v;
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		CHECK(to_vector(drop_back(v, 0)) == std::vector<int>{});
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		CHECK(to_vector(drop_back(v, 3)) == std::vector<int>{});
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	}
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	SECTION("non-empty") {
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		std::vector<int> v = {1, 2, 3, 4, 5};
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		CHECK(to_vector(drop_back(v, 0)) == std::vector<int>{1, 2, 3, 4, 5});
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		CHECK(to_vector(drop_back(v, 1)) == std::vector<int>{1, 2, 3, 4});
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		CHECK(to_vector(drop_back(v, 2)) == std::vector<int>{1, 2, 3});
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		CHECK(to_vector(drop_back(v, 3)) == std::vector<int>{1, 2});
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		CHECK(to_vector(drop_back(v, 4)) == std::vector<int>{1});
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		CHECK(to_vector(drop_back(v, 5)) == std::vector<int>{});
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		CHECK(to_vector(drop_back(v, 6)) == std::vector<int>{});
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		CHECK(to_vector(drop_back(v, 7)) == std::vector<int>{});
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	}
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	SECTION("r-value") {
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		CHECK(to_vector(drop_back(getVector(6), 3)) == std::vector<int>{0, 1, 2});
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	}
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}
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TEST_CASE("view::drop_back non-random-access-range")
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{
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	SECTION("empty") {
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		std::list<int> l;
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		CHECK(to_vector(drop_back(l, 0)) == std::vector<int>{});
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		CHECK(to_vector(drop_back(l, 3)) == std::vector<int>{});
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	}
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	SECTION("non-empty") {
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		std::list<int> l = {1, 2, 3, 4, 5};
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		CHECK(to_vector(drop_back(l, 0)) == std::vector<int>{1, 2, 3, 4, 5});
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		CHECK(to_vector(drop_back(l, 1)) == std::vector<int>{1, 2, 3, 4});
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		CHECK(to_vector(drop_back(l, 2)) == std::vector<int>{1, 2, 3});
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		CHECK(to_vector(drop_back(l, 3)) == std::vector<int>{1, 2});
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		CHECK(to_vector(drop_back(l, 4)) == std::vector<int>{1});
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		CHECK(to_vector(drop_back(l, 5)) == std::vector<int>{});
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		CHECK(to_vector(drop_back(l, 6)) == std::vector<int>{});
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		CHECK(to_vector(drop_back(l, 7)) == std::vector<int>{});
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	}
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}