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Unconditionally use FindFirstBit in SetBitIterator

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Add simple tests
This commit is contained in:
Jonathan G Rennison
2024-01-25 19:03:32 +00:00
parent 5404be172c
commit c26ca5369e
2 changed files with 21 additions and 21 deletions
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19
src/tests/bitmath_func.cpp
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@@ -51,3 +51,22 @@ TEST_CASE("FindLastBit tests")
CHECK(FindLastBit(0x42U) == FindLastBit(0x40U));
CHECK(FindLastBit(0xAAAAU) == FindLastBit(0x8000U));
}
TEST_CASE("SetBitIterator tests")
{
auto test_case = [&](auto input, std::initializer_list<uint> expected) {
auto iter = expected.begin();
for (auto bit : SetBitIterator(input)) {
if (iter == expected.end()) return false;
if (bit != *iter) return false;
++iter;
}
return iter == expected.end();
};
CHECK(test_case(0, {}));
CHECK(test_case(1, { 0 }));
CHECK(test_case(42, { 1, 3, 5 }));
CHECK(test_case(0x8080FFFFU, { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 23, 31 }));
CHECK(test_case(INT32_MIN, { 31 }));
CHECK(test_case(INT64_MIN, { 63 }));
}