#define CATCH_CONFIG_MAIN
#include "catch/catch.hpp"
#include "text.hpp"
#include "drop.hpp"

unsigned int additional[256] = {0};

TEST_CASE("UTF-8 enforcement", "[utf8]") {
	REQUIRE(check_utf8("") == std::string(""));
	REQUIRE(check_utf8("hello world") == std::string(""));
	REQUIRE(check_utf8("Καλημέρα κόσμε") == std::string(""));
	REQUIRE(check_utf8("こんにちは 世界") == std::string(""));
	REQUIRE(check_utf8("👋🌏") == std::string(""));
	REQUIRE(check_utf8("Hola m\xF3n") == std::string("\"Hola m\xF3n\" is not valid UTF-8 (0xF3 0x6E)"));
}

TEST_CASE("UTF-8 truncation", "[trunc]") {
	REQUIRE(truncate16("0123456789abcdefghi", 16) == std::string("0123456789abcdef"));
	REQUIRE(truncate16("0123456789éîôüéîôüç", 16) == std::string("0123456789éîôüéî"));
	REQUIRE(truncate16("0123456789😀😬😁😂😃😄😅😆", 16) == std::string("0123456789😀😬😁"));
	REQUIRE(truncate16("0123456789😀😬😁😂😃😄😅😆", 17) == std::string("0123456789😀😬😁"));
	REQUIRE(truncate16("0123456789あいうえおかきくけこさ", 16) == std::string("0123456789あいうえおか"));
}

TEST_CASE("index structure packing", "[index]") {
	REQUIRE(sizeof(struct index) == 32);
}

TEST_CASE("prep drop states", "[prep_drop_state]") {
	struct drop_state ds[25];

	prep_drop_states(ds, 24, 16, 2);
	REQUIRE(ds[24].interval == 1);
	REQUIRE(ds[17].interval == 1);
	REQUIRE(ds[16].interval == 1);
	REQUIRE(ds[15].interval == 2);
	REQUIRE(ds[14].interval == 4);

	// to fix: because of floating point error this is not quite true
	// REQUIRE(ds[0].interval == 65536);
}