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//===-- VASprintfTest.cpp -------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Utility/VASPrintf.h"
#include "llvm/ADT/SmallString.h"
#include "gtest/gtest.h"
#include <locale.h>
#if defined (_WIN32)
#define TEST_ENCODING ".932" // On Windows, test codepage 932
#else
#define TEST_ENCODING "C" // ...otherwise, any widely available uni-byte LC
#endif
using namespace lldb_private;
using namespace llvm;
static bool Sprintf(llvm::SmallVectorImpl<char> &Buffer, const char *Fmt, ...) {
va_list args;
va_start(args, Fmt);
bool Result = VASprintf(Buffer, Fmt, args);
va_end(args);
return Result;
}
TEST(VASprintfTest, NoBufferResize) {
std::string TestStr("small");
llvm::SmallString<32> BigBuffer;
ASSERT_TRUE(Sprintf(BigBuffer, "%s", TestStr.c_str()));
EXPECT_STREQ(TestStr.c_str(), BigBuffer.c_str());
EXPECT_EQ(TestStr.size(), BigBuffer.size());
}
TEST(VASprintfTest, BufferResize) {
std::string TestStr("bigger");
llvm::SmallString<4> SmallBuffer;
ASSERT_TRUE(Sprintf(SmallBuffer, "%s", TestStr.c_str()));
EXPECT_STREQ(TestStr.c_str(), SmallBuffer.c_str());
EXPECT_EQ(TestStr.size(), SmallBuffer.size());
}
TEST(VASprintfTest, EncodingError) {
// Save the current locale first.
std::string Current(::setlocale(LC_ALL, nullptr));
// Ensure tested locale is successfully set
ASSERT_TRUE(setlocale(LC_ALL, TEST_ENCODING));
wchar_t Invalid[2];
Invalid[0] = 0x100;
Invalid[1] = 0;
llvm::SmallString<32> Buffer;
EXPECT_FALSE(Sprintf(Buffer, "%ls", Invalid));
EXPECT_EQ("<Encoding error>", Buffer);
// Ensure we've restored the original locale once tested
ASSERT_TRUE(setlocale(LC_ALL, Current.c_str()));
}
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