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MemoryBufer: add a test: check that a file with size that is a multiple of the

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page size can be null terminated correctly by MemoryBuffer.

llvm-svn: 189965
This commit is contained in:
Dmitri Gribenko 2013-09-04 18:02:13 +00:00
parent 4038113eea
commit 22ee49cc37
1 changed files with 22 additions and 0 deletions
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22
unittests/Support/MemoryBufferTest.cpp
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@ -65,6 +65,28 @@ TEST_F(MemoryBufferTest, get) {
EXPECT_EQ("this is some data", data); EXPECT_EQ("this is some data", data);
} }
TEST_F(MemoryBufferTest, NullTerminator4K) {
// Test that a file with size that is a multiple of the page size can be null
// terminated correctly by MemoryBuffer.
int TestFD;
SmallString<64> TestPath;
sys::fs::createTemporaryFile("MemoryBufferTest_NullTerminator4K", "temp",
TestFD, TestPath);
raw_fd_ostream OF(TestFD, true, /*unbuffered=*/true);
for (unsigned i = 0; i < 4096 / 16; ++i) {
OF << "0123456789abcdef";
}
OF.close();
OwningPtr<MemoryBuffer> MB;
error_code EC = MemoryBuffer::getFile(TestPath, MB);
ASSERT_FALSE(EC);
const char *BufData = MB->getBufferStart();
EXPECT_EQ('f', BufData[4095]);
EXPECT_EQ('\0', BufData[4096]);
}
TEST_F(MemoryBufferTest, copy) { TEST_F(MemoryBufferTest, copy) {
// copy with no name // copy with no name
OwningBuffer MBC1(MemoryBuffer::getMemBufferCopy(data)); OwningBuffer MBC1(MemoryBuffer::getMemBufferCopy(data));