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c8213b7827
- As best I can tell, we have eliminated all the code which used to require a larger buffer size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81912 91177308-0d34-0410-b5e6-96231b3b80d8
131 lines
4.0 KiB
C++
131 lines
4.0 KiB
C++
//===- llvm/unittest/Support/raw_ostream_test.cpp - raw_ostream 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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#include "gtest/gtest.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace {
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template<typename T> std::string printToString(const T &Value) {
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std::string res;
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llvm::raw_string_ostream(res) << Value;
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return res;
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}
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/// printToString - Print the given value to a stream which only has \arg
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/// BytesLeftInBuffer bytes left in the buffer. This is useful for testing edge
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/// cases in the buffer handling logic.
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template<typename T> std::string printToString(const T &Value,
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unsigned BytesLeftInBuffer) {
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// FIXME: This is relying on internal knowledge of how raw_ostream works to
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// get the buffer position right.
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SmallString<256> SVec;
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assert(BytesLeftInBuffer < 256 && "Invalid buffer count!");
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llvm::raw_svector_ostream OS(SVec);
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unsigned StartIndex = 256 - BytesLeftInBuffer;
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for (unsigned i = 0; i != StartIndex; ++i)
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OS << '?';
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OS << Value;
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return OS.str().substr(StartIndex);
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}
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template<typename T> std::string printToStringUnbuffered(const T &Value) {
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std::string res;
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llvm::raw_string_ostream OS(res);
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OS.SetUnbuffered();
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OS << Value;
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return res;
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}
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TEST(raw_ostreamTest, Types_Buffered) {
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// Char
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EXPECT_EQ("c", printToString('c'));
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// String
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EXPECT_EQ("hello", printToString("hello"));
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EXPECT_EQ("hello", printToString(std::string("hello")));
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// Int
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EXPECT_EQ("0", printToString(0));
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EXPECT_EQ("2425", printToString(2425));
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EXPECT_EQ("-2425", printToString(-2425));
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// Long long
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EXPECT_EQ("0", printToString(0LL));
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EXPECT_EQ("257257257235709", printToString(257257257235709LL));
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EXPECT_EQ("-257257257235709", printToString(-257257257235709LL));
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// Double
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EXPECT_EQ("1.100000e+00", printToString(1.1));
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// void*
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EXPECT_EQ("0x0", printToString((void*) 0));
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EXPECT_EQ("0xbeef", printToString((void*) 0xbeef));
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EXPECT_EQ("0xdeadbeef", printToString((void*) 0xdeadbeef));
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// Min and max.
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EXPECT_EQ("18446744073709551615", printToString(UINT64_MAX));
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EXPECT_EQ("-9223372036854775808", printToString(INT64_MIN));
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}
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TEST(raw_ostreamTest, Types_Unbuffered) {
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// Char
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EXPECT_EQ("c", printToStringUnbuffered('c'));
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// String
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EXPECT_EQ("hello", printToStringUnbuffered("hello"));
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EXPECT_EQ("hello", printToStringUnbuffered(std::string("hello")));
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// Int
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EXPECT_EQ("0", printToStringUnbuffered(0));
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EXPECT_EQ("2425", printToStringUnbuffered(2425));
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EXPECT_EQ("-2425", printToStringUnbuffered(-2425));
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// Long long
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EXPECT_EQ("0", printToStringUnbuffered(0LL));
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EXPECT_EQ("257257257235709", printToStringUnbuffered(257257257235709LL));
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EXPECT_EQ("-257257257235709", printToStringUnbuffered(-257257257235709LL));
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// Double
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EXPECT_EQ("1.100000e+00", printToStringUnbuffered(1.1));
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// void*
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EXPECT_EQ("0x0", printToStringUnbuffered((void*) 0));
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EXPECT_EQ("0xbeef", printToStringUnbuffered((void*) 0xbeef));
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EXPECT_EQ("0xdeadbeef", printToStringUnbuffered((void*) 0xdeadbeef));
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// Min and max.
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EXPECT_EQ("18446744073709551615", printToStringUnbuffered(UINT64_MAX));
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EXPECT_EQ("-9223372036854775808", printToStringUnbuffered(INT64_MIN));
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}
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TEST(raw_ostreamTest, BufferEdge) {
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EXPECT_EQ("1.20", printToString(format("%.2f", 1.2), 1));
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EXPECT_EQ("1.20", printToString(format("%.2f", 1.2), 2));
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EXPECT_EQ("1.20", printToString(format("%.2f", 1.2), 3));
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EXPECT_EQ("1.20", printToString(format("%.2f", 1.2), 4));
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EXPECT_EQ("1.20", printToString(format("%.2f", 1.2), 10));
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}
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TEST(raw_ostreamTest, TinyBuffer) {
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std::string Str;
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raw_string_ostream OS(Str);
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OS.SetBufferSize(1);
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OS << "hello";
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OS << 1;
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OS << 'w' << 'o' << 'r' << 'l' << 'd';
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EXPECT_EQ("hello1world", OS.str());
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}
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}
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