36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
// Copyright 2017 David Conran
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#include "IRutils.h"
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#include "gtest/gtest.h"
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// Tests reverseBits().
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// Tests reverseBits for typical use.
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TEST(ReverseBitsTest, TypicalUse) {
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EXPECT_EQ(0xF, reverseBits(0xF0, 8));
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EXPECT_EQ(0xFFFF, reverseBits(0xFFFF0000, 32));
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EXPECT_EQ(0x555500005555FFFF, reverseBits(0xFFFFAAAA0000AAAA, 64));
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EXPECT_EQ(0, reverseBits(0, 64));
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EXPECT_EQ(0xFFFFFFFFFFFFFFFF, reverseBits(0xFFFFFFFFFFFFFFFF, 64));
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}
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// Tests reverseBits for bit size values <= 1
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TEST(ReverseBitsTest, LessThanTwoBitsReversed) {
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EXPECT_EQ(0x12345678, reverseBits(0x12345678, 1));
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EXPECT_EQ(1234, reverseBits(1234, 0));
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}
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// Tests reverseBits for bit size larger than a uint64_t.
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TEST(ReverseBitsTest, LargerThan64BitsReversed) {
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EXPECT_EQ(0, reverseBits(0, 65));
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EXPECT_EQ(0xFFFFFFFFFFFFFFFF, reverseBits(0xFFFFFFFFFFFFFFFF, 100));
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EXPECT_EQ(0x555500005555FFFF, reverseBits(0xFFFFAAAA0000AAAA, 3000));
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}
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// Tests reverseBits for bit sizes less than all the data stored.
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TEST(ReverseBitsTest, LessBitsReversedThanInputHasSet) {
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EXPECT_EQ(0xF8, reverseBits(0xF1, 4));
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EXPECT_EQ(0xF5, reverseBits(0xFA, 4));
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EXPECT_EQ(0x12345678FFFF0000, reverseBits(0x123456780000FFFF, 32));
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}
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