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99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
//===- llvm/unittest/Support/MemoryBufferTest.cpp - MemoryBuffer tests ----===//
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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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//
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// This file implements unit tests for the MemoryBuffer support class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/ADT/OwningPtr.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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class MemoryBufferTest : public testing::Test {
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protected:
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MemoryBufferTest()
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: data("this is some data")
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{ }
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virtual void SetUp() { }
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typedef OwningPtr<MemoryBuffer> OwningBuffer;
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std::string data;
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};
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namespace {
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TEST_F(MemoryBufferTest, get) {
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// Default name and null-terminator flag
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OwningBuffer MB1(MemoryBuffer::getMemBuffer(data));
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EXPECT_TRUE(0 != MB1.get());
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// RequiresNullTerminator = false
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OwningBuffer MB2(MemoryBuffer::getMemBuffer(data, "one", false));
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EXPECT_TRUE(0 != MB2.get());
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// RequiresNullTerminator = true
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OwningBuffer MB3(MemoryBuffer::getMemBuffer(data, "two", true));
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EXPECT_TRUE(0 != MB3.get());
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// verify all 3 buffers point to the same address
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EXPECT_EQ(MB1->getBufferStart(), MB2->getBufferStart());
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EXPECT_EQ(MB2->getBufferStart(), MB3->getBufferStart());
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// verify the original data is unmodified after deleting the buffers
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MB1.reset();
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MB2.reset();
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MB3.reset();
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EXPECT_EQ("this is some data", data);
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}
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TEST_F(MemoryBufferTest, copy) {
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// copy with no name
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OwningBuffer MBC1(MemoryBuffer::getMemBufferCopy(data));
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EXPECT_TRUE(0 != MBC1.get());
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// copy with a name
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OwningBuffer MBC2(MemoryBuffer::getMemBufferCopy(data, "copy"));
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EXPECT_TRUE(0 != MBC2.get());
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// verify the two copies do not point to the same place
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EXPECT_NE(MBC1->getBufferStart(), MBC2->getBufferStart());
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}
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TEST_F(MemoryBufferTest, make_new) {
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// 0-sized buffer
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OwningBuffer Zero(MemoryBuffer::getNewUninitMemBuffer(0));
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EXPECT_TRUE(0 != Zero.get());
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// uninitialized buffer with no name
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OwningBuffer One(MemoryBuffer::getNewUninitMemBuffer(321));
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EXPECT_TRUE(0 != One.get());
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// uninitialized buffer with name
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OwningBuffer Two(MemoryBuffer::getNewUninitMemBuffer(123, "bla"));
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EXPECT_TRUE(0 != Two.get());
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// 0-initialized buffer with no name
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OwningBuffer Three(MemoryBuffer::getNewMemBuffer(321, data));
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EXPECT_TRUE(0 != Three.get());
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for (size_t i = 0; i < 321; ++i)
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EXPECT_EQ(0, Three->getBufferStart()[0]);
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// 0-initialized buffer with name
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OwningBuffer Four(MemoryBuffer::getNewMemBuffer(123, "zeros"));
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EXPECT_TRUE(0 != Four.get());
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for (size_t i = 0; i < 123; ++i)
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EXPECT_EQ(0, Four->getBufferStart()[0]);
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}
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}
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