| 1 | //===-- VASprintfTest.cpp -------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "lldb/Utility/VASPrintf.h" |
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| 10 | #include "llvm/ADT/SmallString.h" |
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| 11 | |
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| 12 | #include "gtest/gtest.h" |
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| 13 | |
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| 14 | #include <locale.h> |
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| 15 | |
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| 16 | #if defined (_WIN32) |
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| 17 | #define TEST_ENCODING ".932" // On Windows, test codepage 932 |
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| 18 | #else |
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| 19 | #define TEST_ENCODING "C" // ...otherwise, any widely available uni-byte LC |
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| 20 | #endif |
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| 21 | |
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| 22 | using namespace lldb_private; |
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| 23 | using namespace llvm; |
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| 24 | |
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| 25 | static bool Sprintf(llvm::SmallVectorImpl<char> &Buffer, const char *Fmt, ...) { |
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| 26 | va_list args; |
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| 27 | va_start(args, Fmt); |
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| 28 | bool Result = VASprintf(buf&: Buffer, fmt: Fmt, args); |
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| 29 | va_end(args); |
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| 30 | return Result; |
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| 31 | } |
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| 32 | |
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| 33 | TEST(VASprintfTest, NoBufferResize) { |
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| 34 | std::string TestStr("small" ); |
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| 35 | |
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| 36 | llvm::SmallString<32> BigBuffer; |
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| 37 | ASSERT_TRUE(Sprintf(BigBuffer, "%s" , TestStr.c_str())); |
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| 38 | EXPECT_STREQ(TestStr.c_str(), BigBuffer.c_str()); |
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| 39 | EXPECT_EQ(TestStr.size(), BigBuffer.size()); |
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| 40 | } |
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| 41 | |
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| 42 | TEST(VASprintfTest, BufferResize) { |
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| 43 | std::string TestStr("bigger" ); |
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| 44 | llvm::SmallString<4> SmallBuffer; |
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| 45 | ASSERT_TRUE(Sprintf(SmallBuffer, "%s" , TestStr.c_str())); |
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| 46 | EXPECT_STREQ(TestStr.c_str(), SmallBuffer.c_str()); |
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| 47 | EXPECT_EQ(TestStr.size(), SmallBuffer.size()); |
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| 48 | } |
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| 49 | |
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| 50 | TEST(VASprintfTest, EncodingError) { |
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| 51 | // Save the current locale first. |
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| 52 | std::string Current(::setlocale(LC_ALL, locale: nullptr)); |
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| 53 | |
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| 54 | // Ensure tested locale is successfully set |
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| 55 | ASSERT_TRUE(setlocale(LC_ALL, TEST_ENCODING)); |
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| 56 | |
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| 57 | wchar_t Invalid[2]; |
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| 58 | Invalid[0] = 0x100; |
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| 59 | Invalid[1] = 0; |
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| 60 | llvm::SmallString<32> Buffer; |
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| 61 | EXPECT_FALSE(Sprintf(Buffer, "%ls" , Invalid)); |
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| 62 | EXPECT_EQ("<Encoding error>" , Buffer); |
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| 63 | |
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| 64 | // Ensure we've restored the original locale once tested |
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| 65 | ASSERT_TRUE(setlocale(LC_ALL, Current.c_str())); |
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| 66 | } |
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| 67 | |
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