f362aea42d
The idea is to move all pieces related to the actual libc sources to the "src" directory. This allows downstream users to ship and build just the "src" directory. Reviewed By: michaelrj Differential Revision: https://reviews.llvm.org/D112653
103 lines
2.8 KiB
C++
103 lines
2.8 KiB
C++
//===-- Unittests for Bitset ----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/__support/CPP/Bitset.h"
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#include "utils/UnitTest/Test.h"
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TEST(LlvmLibcBitsetTest, SetBitForSizeEqualToOne) {
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__llvm_libc::cpp::Bitset<1> bitset;
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EXPECT_FALSE(bitset.test(0));
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bitset.set(0);
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EXPECT_TRUE(bitset.test(0));
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}
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TEST(LlvmLibcBitsetTest, SetsBitsForSizeEqualToTwo) {
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__llvm_libc::cpp::Bitset<2> bitset;
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bitset.set(0);
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EXPECT_TRUE(bitset.test(0));
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bitset.set(1);
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EXPECT_TRUE(bitset.test(1));
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}
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TEST(LlvmLibcBitsetTest, SetsAllBitsForSizeLessThanEight) {
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__llvm_libc::cpp::Bitset<7> bitset;
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for (size_t i = 0; i < 7; ++i)
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bitset.set(i);
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// Verify all bits are now set.
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for (size_t j = 0; j < 7; ++j)
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EXPECT_TRUE(bitset.test(j));
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}
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TEST(LlvmLibcBitsetTest, SetsAllBitsForSizeLessThanSixteen) {
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__llvm_libc::cpp::Bitset<15> bitset;
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for (size_t i = 0; i < 15; ++i)
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bitset.set(i);
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// Verify all bits are now set.
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for (size_t j = 0; j < 15; ++j)
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EXPECT_TRUE(bitset.test(j));
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}
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TEST(LlvmLibcBitsetTest, SetsAllBitsForSizeLessThanThirtyTwo) {
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__llvm_libc::cpp::Bitset<31> bitset;
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for (size_t i = 0; i < 31; ++i)
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bitset.set(i);
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// Verify all bits are now set.
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for (size_t j = 0; j < 31; ++j)
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EXPECT_TRUE(bitset.test(j));
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}
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TEST(LlvmLibcBitsetTest, DefaultHasNoSetBits) {
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__llvm_libc::cpp::Bitset<64> bitset;
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for (size_t i = 0; i < 64; ++i) {
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EXPECT_FALSE(bitset.test(i));
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}
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// Same for odd number.
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__llvm_libc::cpp::Bitset<65> odd_bitset;
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for (size_t i = 0; i < 65; ++i) {
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EXPECT_FALSE(odd_bitset.test(i));
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}
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}
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TEST(LlvmLibcBitsetTest, SettingBitXDoesNotSetBitY) {
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for (size_t i = 0; i < 256; ++i) {
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// Initialize within the loop to start with a fresh Bitset.
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__llvm_libc::cpp::Bitset<256> bitset;
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bitset.set(i);
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for (size_t neighbor = 0; neighbor < 256; ++neighbor) {
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if (neighbor == i)
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EXPECT_TRUE(bitset.test(neighbor));
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else
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EXPECT_FALSE(bitset.test(neighbor));
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}
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}
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// Same for odd number.
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for (size_t i = 0; i < 255; ++i) {
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__llvm_libc::cpp::Bitset<255> bitset;
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bitset.set(i);
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for (size_t neighbor = 0; neighbor < 255; ++neighbor) {
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if (neighbor == i)
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EXPECT_TRUE(bitset.test(neighbor));
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else
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EXPECT_FALSE(bitset.test(neighbor));
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}
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}
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}
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TEST(LlvmLibcBitsetTest, SettingBitXDoesNotResetBitY) {
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__llvm_libc::cpp::Bitset<128> bitset;
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for (size_t i = 0; i < 128; ++i)
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bitset.set(i);
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// Verify all bits are now set.
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for (size_t j = 0; j < 128; ++j)
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EXPECT_TRUE(bitset.test(j));
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}
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