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libraries/FastLED/tests/test_bitset.cpp
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libraries/FastLED/tests/test_bitset.cpp
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// g++ --std=c++11 test.cpp
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#include "test.h"
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#include "fl/bitset.h"
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#include "fl/bitset_dynamic.h"
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using namespace fl;
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TEST_CASE("test bitset") {
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// default‐constructed bitset is empty
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bitset_fixed<10> bs;
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REQUIRE_EQ(bs.none(), true);
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REQUIRE_EQ(bs.count(), 0);
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REQUIRE_EQ(bs.size(), 10);
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// set a bit
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bs.set(3);
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REQUIRE_EQ(bs.test(3), true);
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REQUIRE_EQ(bs[3], true);
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REQUIRE_EQ(bs.any(), true);
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REQUIRE_EQ(bs.count(), 1);
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// reset that bit
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bs.reset(3);
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REQUIRE_EQ(bs.test(3), false);
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REQUIRE_EQ(bs.none(), true);
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// toggle a bit
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bs.flip(2);
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REQUIRE_EQ(bs.test(2), true);
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bs.flip(2);
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REQUIRE_EQ(bs.test(2), false);
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// flip all bits
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bitset_fixed<5> bs2;
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for (size_t i = 0; i < 5; ++i)
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bs2.set(i, (i % 2) == 0);
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auto bs2_flipped = ~bs2;
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for (size_t i = 0; i < 5; ++i)
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REQUIRE_EQ(bs2_flipped.test(i), !bs2.test(i));
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// all() and count()
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bitset_fixed<4> bs3;
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for (size_t i = 0; i < 4; ++i)
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bs3.set(i);
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REQUIRE_EQ(bs3.all(), true);
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REQUIRE_EQ(bs3.count(), 4);
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// check that the count can auto expand
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bs3.set(100);
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REQUIRE_EQ(bs3.count(), 4);
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// bitwise AND, OR, XOR
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bitset_fixed<4> a, b;
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a.set(0); a.set(2);
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b.set(1); b.set(2);
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auto or_ab = a | b;
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REQUIRE_EQ(or_ab.test(0), true);
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REQUIRE_EQ(or_ab.test(1), true);
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REQUIRE_EQ(or_ab.test(2), true);
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REQUIRE_EQ(or_ab.test(3), false);
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auto and_ab = a & b;
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REQUIRE_EQ(and_ab.test(2), true);
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REQUIRE_EQ(and_ab.test(0), false);
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auto xor_ab = a ^ b;
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REQUIRE_EQ(xor_ab.test(0), true);
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REQUIRE_EQ(xor_ab.test(1), true);
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REQUIRE_EQ(xor_ab.test(2), false);
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// reset and none()
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a.reset(); b.reset();
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REQUIRE_EQ(a.none(), true);
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// Test expected size of bitset_fixed
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REQUIRE_EQ(bitset_fixed<8>().size(), 8);
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REQUIRE_EQ(bitset_fixed<16>().size(), 16);
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REQUIRE_EQ(bitset_fixed<32>().size(), 32);
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REQUIRE_EQ(bitset_fixed<64>().size(), 64);
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REQUIRE_EQ(bitset_fixed<100>().size(), 100);
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REQUIRE_EQ(bitset_fixed<1000>().size(), 1000);
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// Test memory size of bitset_fixed class (sizeof)
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// For bitset_fixed<8>, we expect 1 uint64_t block (8 bytes)
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REQUIRE_EQ(sizeof(bitset_fixed<8>), 8);
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// For bitset_fixed<64>, we expect 1 uint64_t block (8 bytes)
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REQUIRE_EQ(sizeof(bitset_fixed<64>), 8);
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// For bitset_fixed<65>, we expect 2 uint64_t blocks (16 bytes)
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REQUIRE_EQ(sizeof(bitset_fixed<65>), 16);
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// For bitset_fixed<128>, we expect 2 uint64_t blocks (16 bytes)
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REQUIRE_EQ(sizeof(bitset_fixed<128>), 16);
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// For bitset_fixed<129>, we expect 3 uint64_t blocks (24 bytes)
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REQUIRE_EQ(sizeof(bitset_fixed<129>), 24);
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}
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TEST_CASE("compare fixed and dynamic bitsets") {
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// Test that fixed and dynamic bitsets behave the same
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bitset_fixed<10> fixed_bs;
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fl::bitset_dynamic dynamic_bs(10);
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// Set the same bits in both
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fixed_bs.set(1);
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fixed_bs.set(5);
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fixed_bs.set(9);
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dynamic_bs.set(1);
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dynamic_bs.set(5);
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dynamic_bs.set(9);
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// Verify they have the same state
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REQUIRE_EQ(fixed_bs.size(), dynamic_bs.size());
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REQUIRE_EQ(fixed_bs.count(), dynamic_bs.count());
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for (size_t i = 0; i < 10; ++i) {
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REQUIRE_EQ(fixed_bs.test(i), dynamic_bs.test(i));
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}
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}
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TEST_CASE("test bitset_dynamic") {
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// default-constructed bitset is empty
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bitset_dynamic bs;
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REQUIRE_EQ(bs.size(), 0);
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REQUIRE_EQ(bs.none(), true);
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REQUIRE_EQ(bs.count(), 0);
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// resize and test
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bs.resize(10);
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REQUIRE_EQ(bs.size(), 10);
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REQUIRE_EQ(bs.none(), true);
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// set a bit
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bs.set(3);
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REQUIRE_EQ(bs.test(3), true);
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REQUIRE_EQ(bs[3], true);
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REQUIRE_EQ(bs.any(), true);
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REQUIRE_EQ(bs.count(), 1);
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// reset that bit
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bs.reset(3);
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REQUIRE_EQ(bs.test(3), false);
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REQUIRE_EQ(bs.none(), true);
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// toggle a bit
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bs.flip(2);
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REQUIRE_EQ(bs.test(2), true);
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bs.flip(2);
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REQUIRE_EQ(bs.test(2), false);
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// resize larger
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bs.set(5);
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bs.resize(20);
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REQUIRE_EQ(bs.size(), 20);
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REQUIRE_EQ(bs.test(5), true);
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REQUIRE_EQ(bs.count(), 1);
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// resize smaller (truncate)
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bs.resize(4);
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REQUIRE_EQ(bs.size(), 4);
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REQUIRE_EQ(bs.test(5), false); // out of range now
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REQUIRE_EQ(bs.count(), 0);
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// test with larger sizes that span multiple blocks
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bitset_dynamic large_bs(100);
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large_bs.set(0);
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large_bs.set(63);
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large_bs.set(64);
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large_bs.set(99);
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REQUIRE_EQ(large_bs.count(), 4);
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REQUIRE_EQ(large_bs.test(0), true);
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REQUIRE_EQ(large_bs.test(63), true);
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REQUIRE_EQ(large_bs.test(64), true);
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REQUIRE_EQ(large_bs.test(99), true);
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// flip all bits
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bitset_dynamic bs2(5);
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for (size_t i = 0; i < 5; ++i)
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bs2.set(i, (i % 2) == 0);
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bs2.flip();
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for (size_t i = 0; i < 5; ++i)
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REQUIRE_EQ(bs2.test(i), !((i % 2) == 0));
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// all() and count()
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bitset_dynamic bs3(4);
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for (size_t i = 0; i < 4; ++i)
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bs3.set(i);
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REQUIRE_EQ(bs3.all(), true);
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REQUIRE_EQ(bs3.count(), 4);
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// out-of-range ops are no-ops
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bs3.set(100);
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REQUIRE_EQ(bs3.count(), 4);
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// bitwise AND, OR, XOR
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bitset_dynamic a(4), b(4);
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a.set(0); a.set(2);
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b.set(1); b.set(2);
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auto or_ab = a | b;
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REQUIRE_EQ(or_ab.test(0), true);
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REQUIRE_EQ(or_ab.test(1), true);
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REQUIRE_EQ(or_ab.test(2), true);
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REQUIRE_EQ(or_ab.test(3), false);
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auto and_ab = a & b;
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REQUIRE_EQ(and_ab.test(2), true);
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REQUIRE_EQ(and_ab.test(0), false);
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auto xor_ab = a ^ b;
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REQUIRE_EQ(xor_ab.test(0), true);
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REQUIRE_EQ(xor_ab.test(1), true);
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REQUIRE_EQ(xor_ab.test(2), false);
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// reset and none()
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a.reset(); b.reset();
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REQUIRE_EQ(a.none(), true);
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REQUIRE_EQ(b.none(), true);
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// copy constructor
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bitset_dynamic original(10);
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original.set(3);
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original.set(7);
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bitset_dynamic copy(original);
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REQUIRE_EQ(copy.size(), 10);
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REQUIRE_EQ(copy.test(3), true);
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REQUIRE_EQ(copy.test(7), true);
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REQUIRE_EQ(copy.count(), 2);
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// move constructor
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bitset_dynamic moved(fl::move(copy));
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REQUIRE_EQ(moved.size(), 10);
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REQUIRE_EQ(moved.test(3), true);
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REQUIRE_EQ(moved.test(7), true);
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REQUIRE_EQ(moved.count(), 2);
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REQUIRE_EQ(copy.size(), 0); // moved from should be empty
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// assignment operator
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bitset_dynamic assigned = original;
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REQUIRE_EQ(assigned.size(), 10);
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REQUIRE_EQ(assigned.test(3), true);
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REQUIRE_EQ(assigned.test(7), true);
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// clear
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assigned.clear();
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REQUIRE_EQ(assigned.size(), 0);
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REQUIRE_EQ(assigned.none(), true);
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// Test memory size changes with resize
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bitset_dynamic small_bs(8);
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bitset_dynamic medium_bs(65);
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bitset_dynamic large_bs2(129);
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// These sizes should match the fixed bitset tests
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REQUIRE_EQ(small_bs.size(), 8);
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REQUIRE_EQ(medium_bs.size(), 65);
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REQUIRE_EQ(large_bs2.size(), 129);
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}
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