// Copyright 2017 David Conran #include "IRutils.h" #include #include "gtest/gtest.h" // Tests reverseBits(). // Tests reverseBits for typical use. TEST(ReverseBitsTest, TypicalUse) { EXPECT_EQ(0xF, reverseBits(0xF0, 8)); EXPECT_EQ(0xFFFF, reverseBits(0xFFFF0000, 32)); EXPECT_EQ(0x555500005555FFFF, reverseBits(0xFFFFAAAA0000AAAA, 64)); EXPECT_EQ(0, reverseBits(0, 64)); EXPECT_EQ(0xFFFFFFFFFFFFFFFF, reverseBits(0xFFFFFFFFFFFFFFFF, 64)); } // Tests reverseBits for bit size values <= 1 TEST(ReverseBitsTest, LessThanTwoBitsReversed) { EXPECT_EQ(0x12345678, reverseBits(0x12345678, 1)); EXPECT_EQ(1234, reverseBits(1234, 0)); } // Tests reverseBits for bit size larger than a uint64_t. TEST(ReverseBitsTest, LargerThan64BitsReversed) { EXPECT_EQ(0, reverseBits(0, 65)); EXPECT_EQ(0xFFFFFFFFFFFFFFFF, reverseBits(0xFFFFFFFFFFFFFFFF, 100)); EXPECT_EQ(0x555500005555FFFF, reverseBits(0xFFFFAAAA0000AAAA, 3000)); } // Tests reverseBits for bit sizes less than all the data stored. TEST(ReverseBitsTest, LessBitsReversedThanInputHasSet) { EXPECT_EQ(0xF8, reverseBits(0xF1, 4)); EXPECT_EQ(0xF5, reverseBits(0xFA, 4)); EXPECT_EQ(0x12345678FFFF0000, reverseBits(0x123456780000FFFF, 32)); } // Tests for uint64ToString() TEST(TestUint64ToString, TrivialCases) { EXPECT_EQ("0", uint64ToString(0)); // Default base (10) EXPECT_EQ("0", uint64ToString(0, 2)); // Base-2 EXPECT_EQ("0", uint64ToString(0, 8)); // Base-8 EXPECT_EQ("0", uint64ToString(0, 10)); // Base-10 EXPECT_EQ("0", uint64ToString(0, 16)); // Base-16 EXPECT_EQ("1", uint64ToString(1, 2)); // Base-2 EXPECT_EQ("2", uint64ToString(2, 8)); // Base-8 EXPECT_EQ("3", uint64ToString(3, 10)); // Base-10 EXPECT_EQ("4", uint64ToString(4, 16)); // Base-16 } TEST(TestUint64ToString, NormalUse) { EXPECT_EQ("12345", uint64ToString(12345)); EXPECT_EQ("100", uint64ToString(4, 2)); EXPECT_EQ("3039", uint64ToString(12345, 16)); EXPECT_EQ("123456", uint64ToString(123456)); EXPECT_EQ("1E240", uint64ToString(123456, 16)); EXPECT_EQ("FEEDDEADBEEF", uint64ToString(0xfeeddeadbeef, 16)); } TEST(TestUint64ToString, Max64Bit) { EXPECT_EQ("18446744073709551615", uint64ToString(UINT64_MAX)); // Default EXPECT_EQ("1111111111111111111111111111111111111111111111111111111111111111", uint64ToString(UINT64_MAX, 2)); // Base-2 EXPECT_EQ("1777777777777777777777", uint64ToString(UINT64_MAX, 8)); // Base-8 EXPECT_EQ("18446744073709551615", uint64ToString(UINT64_MAX, 10)); // Base-10 EXPECT_EQ("FFFFFFFFFFFFFFFF", uint64ToString(UINT64_MAX, 16)); // Base-16 } TEST(TestUint64ToString, Max32Bit) { EXPECT_EQ("4294967295", uint64ToString(UINT32_MAX)); // Default EXPECT_EQ("37777777777", uint64ToString(UINT32_MAX, 8)); // Base-8 EXPECT_EQ("4294967295", uint64ToString(UINT32_MAX, 10)); // Base-10 EXPECT_EQ("FFFFFFFF", uint64ToString(UINT32_MAX, 16)); // Base-16 } TEST(TestUint64ToString, InterestingCases) { // Previous hacky-code didn't handle leading zeros in the lower 32 bits. EXPECT_EQ("100000000", uint64ToString(0x100000000, 16)); EXPECT_EQ("100000001", uint64ToString(0x100000001, 16)); } TEST(TestUint64ToString, SillyBases) { // If we are given a silly base, we should defer to Base-10. EXPECT_EQ("12345", uint64ToString(12345, 0)); // Super silly, makes no sense. EXPECT_EQ("12345", uint64ToString(12345, 1)); // We don't do unary. EXPECT_EQ("12345", uint64ToString(12345, 100)); // We can't print base-100. EXPECT_EQ("12345", uint64ToString(12345, 37)); // Base-37 is one to far. EXPECT_EQ("9IX", uint64ToString(12345, 36)); // But we *can* do base-36. }