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67 lines
2.5 KiB
C++
67 lines
2.5 KiB
C++
#include <gtest/gtest.h>
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#include <array>
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#include <absl/types/variant.h>
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#include <util/bits.hpp>
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using ArrayUC1 = std::array< unsigned char, 1 >;
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using ArrayUC20 = std::array< unsigned char, 20 >;
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using ArrayU1 = std::array< unsigned int, 1 >;
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using ArrayULL1 = std::array< unsigned long long, 1 >;
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using TestType = absl::variant< ArrayUC1, ArrayUC20, ArrayU1, ArrayULL1 >;
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struct InputData
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{
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TestType data;
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size_t result;
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};
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struct TestBits : public ::testing::TestWithParam< InputData >
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{
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};
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TEST_P(TestBits, bitcount)
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{
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auto d = GetParam();
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ASSERT_EQ(d.result,
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absl::visit(
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[](const auto& v) { return llarp::bits::count_array_bits(v); },
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d.data));
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}
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// clang-format off
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static const InputData inputData[] = {
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{ArrayUC1{{0b00000000}}, 0},
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{ArrayUC1{{0b00000001}}, 1},
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{ArrayUC1{{0b00000010}}, 1},
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{ArrayUC1{{0b00000100}}, 1},
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{ArrayUC1{{0b00001000}}, 1},
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{ArrayUC1{{0b00010000}}, 1},
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{ArrayUC1{{0b00100000}}, 1},
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{ArrayUC1{{0b01000000}}, 1},
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{ArrayUC1{{0b10000000}}, 1},
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{ArrayUC1{{0b11111111}}, 8},
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{ArrayUC20{{0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000,
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0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000,
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0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000,
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0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000}}, 0},
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{ArrayUC20{{0b11111111, 0b00000100, 0b00000100, 0b00000100, 0b00000100,
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0b11111111, 0b00000100, 0b00000100, 0b00000100, 0b00000100,
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0b11111111, 0b00000100, 0b00000100, 0b00000100, 0b00000100,
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0b11111111, 0b00000100, 0b00000100, 0b00000100, 0b00000100}}, 48},
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{ArrayU1{{0b00000000000000000000000000000000}}, 0},
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{ArrayU1{{0b00101010101010101010101010101010}}, 15},
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{ArrayU1{{0b10101010101010101010101010101010}}, 16},
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{ArrayU1{{0b01010101010101010101010101010101}}, 16},
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{ArrayU1{{0b11111111111111111111111111111111}}, 32},
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{ArrayULL1{{0b0000000000000000000000000000000000000000000000000000000000000000}}, 0},
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{ArrayULL1{{0b0010101010101010101010101010101000101010101010101010101010101010}}, 30},
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{ArrayULL1{{0b1010101010101010101010101010101010101010101010101010101010101010}}, 32},
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{ArrayULL1{{0b0101010101010101010101010101010101010101010101010101010101010101}}, 32},
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{ArrayULL1{{0b1111111111111111111111111111111111111111111111111111111111111111}}, 64},
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};
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// clang-format on
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INSTANTIATE_TEST_CASE_P(TestBits, TestBits, ::testing::ValuesIn(inputData), );
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