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2217648f91
This avoids an issue where AtEndOfStream mistakenly returns true at the /start/ of a stream. (In the rare case that the size is known and actually 0, the slow path will still handle it correctly.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221840 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
//===- BitstreamReaderTest.cpp - Tests for BitstreamReader ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Bitcode/BitstreamReader.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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TEST(BitstreamReaderTest, AtEndOfStream) {
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uint8_t Bytes[4] = {
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0x00, 0x01, 0x02, 0x03
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};
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BitstreamReader Reader(std::begin(Bytes), std::end(Bytes));
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BitstreamCursor Cursor(Reader);
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EXPECT_FALSE(Cursor.AtEndOfStream());
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(void)Cursor.Read(8);
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EXPECT_FALSE(Cursor.AtEndOfStream());
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(void)Cursor.Read(24);
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EXPECT_TRUE(Cursor.AtEndOfStream());
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Cursor.JumpToBit(0);
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EXPECT_FALSE(Cursor.AtEndOfStream());
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Cursor.JumpToBit(32);
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EXPECT_TRUE(Cursor.AtEndOfStream());
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}
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TEST(BitstreamReaderTest, AtEndOfStreamJump) {
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uint8_t Bytes[4] = {
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0x00, 0x01, 0x02, 0x03
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};
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BitstreamReader Reader(std::begin(Bytes), std::end(Bytes));
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BitstreamCursor Cursor(Reader);
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Cursor.JumpToBit(32);
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EXPECT_TRUE(Cursor.AtEndOfStream());
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}
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TEST(BitstreamReaderTest, AtEndOfStreamEmpty) {
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uint8_t Dummy = 0xFF;
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BitstreamReader Reader(&Dummy, &Dummy);
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BitstreamCursor Cursor(Reader);
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EXPECT_TRUE(Cursor.AtEndOfStream());
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}
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} // end anonymous namespace
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