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comaps/coding/coding_tests/move_to_front_tests.cpp
Konstantin Pastbin e3e4a1985a Organic Maps sources as of 02.04.2025 (fad26bbf22ac3da75e01e62aa01e5c8e11861005)
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2025-05-08 21:10:51 +07:00

33 lines
720 B
C++

#include "testing/testing.hpp"
#include "coding/move_to_front.hpp"
#include <cstdint>
using namespace coding;
namespace
{
UNIT_TEST(MoveToFront_Smoke)
{
MoveToFront mtf;
for (size_t i = 0; i < 256; ++i)
TEST_EQUAL(mtf[i], i, ());
// Initially 3 should be on the 3rd position.
TEST_EQUAL(mtf.Transform(3), 3, ());
// After the first transform, 3 should be moved to the 0th position.
TEST_EQUAL(mtf.Transform(3), 0, ());
TEST_EQUAL(mtf.Transform(3), 0, ());
TEST_EQUAL(mtf.Transform(3), 0, ());
TEST_EQUAL(mtf[0], 3, ());
TEST_EQUAL(mtf[1], 0, ());
TEST_EQUAL(mtf[2], 1, ());
TEST_EQUAL(mtf[3], 2, ());
for (size_t i = 4; i < 256; ++i)
TEST_EQUAL(mtf[i], i, ());
}
} // namespace