diff options
Diffstat (limited to 'unittests/Support/LEB128Test.cpp')
| -rw-r--r-- | unittests/Support/LEB128Test.cpp | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/unittests/Support/LEB128Test.cpp b/unittests/Support/LEB128Test.cpp index b1ca13e..76b63e5 100644 --- a/unittests/Support/LEB128Test.cpp +++ b/unittests/Support/LEB128Test.cpp @@ -106,6 +106,7 @@ TEST(LEB128Test, DecodeULEB128) { EXPECT_DECODE_ULEB128_EQ(0xffu, "\xff\x01"); EXPECT_DECODE_ULEB128_EQ(0x100u, "\x80\x02"); EXPECT_DECODE_ULEB128_EQ(0x101u, "\x81\x02"); + EXPECT_DECODE_ULEB128_EQ(4294975616ULL, "\x80\xc1\x80\x80\x10"); // Decode ULEB128 with extra padding bytes EXPECT_DECODE_ULEB128_EQ(0u, "\x80\x00"); @@ -118,6 +119,42 @@ TEST(LEB128Test, DecodeULEB128) { #undef EXPECT_DECODE_ULEB128_EQ } +TEST(LEB128Test, DecodeSLEB128) { +#define EXPECT_DECODE_SLEB128_EQ(EXPECTED, VALUE) \ + do { \ + unsigned ActualSize = 0; \ + int64_t Actual = decodeSLEB128(reinterpret_cast<const uint8_t *>(VALUE), \ + &ActualSize); \ + EXPECT_EQ(sizeof(VALUE) - 1, ActualSize); \ + EXPECT_EQ(EXPECTED, Actual); \ + } while (0) + + // Decode SLEB128 + EXPECT_DECODE_SLEB128_EQ(0L, "\x00"); + EXPECT_DECODE_SLEB128_EQ(1L, "\x01"); + EXPECT_DECODE_SLEB128_EQ(63L, "\x3f"); + EXPECT_DECODE_SLEB128_EQ(-64L, "\x40"); + EXPECT_DECODE_SLEB128_EQ(-63L, "\x41"); + EXPECT_DECODE_SLEB128_EQ(-1L, "\x7f"); + EXPECT_DECODE_SLEB128_EQ(128L, "\x80\x01"); + EXPECT_DECODE_SLEB128_EQ(129L, "\x81\x01"); + EXPECT_DECODE_SLEB128_EQ(-129L, "\xff\x7e"); + EXPECT_DECODE_SLEB128_EQ(-128L, "\x80\x7f"); + EXPECT_DECODE_SLEB128_EQ(-127L, "\x81\x7f"); + EXPECT_DECODE_SLEB128_EQ(64L, "\xc0\x00"); + EXPECT_DECODE_SLEB128_EQ(-12345L, "\xc7\x9f\x7f"); + + // Decode unnormalized SLEB128 with extra padding bytes. + EXPECT_DECODE_SLEB128_EQ(0L, "\x80\x00"); + EXPECT_DECODE_SLEB128_EQ(0L, "\x80\x80\x00"); + EXPECT_DECODE_SLEB128_EQ(0x7fL, "\xff\x00"); + EXPECT_DECODE_SLEB128_EQ(0x7fL, "\xff\x80\x00"); + EXPECT_DECODE_SLEB128_EQ(0x80L, "\x80\x81\x00"); + EXPECT_DECODE_SLEB128_EQ(0x80L, "\x80\x81\x80\x00"); + +#undef EXPECT_DECODE_SLEB128_EQ +} + TEST(LEB128Test, SLEB128Size) { // Positive Value Testing Plan: // (1) 128 ^ n - 1 ........ need (n+1) bytes |