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//===- llvm/unittest/Support/raw_fd_stream_test.cpp - raw_fd_stream tests -===//
//
// 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 "llvm/ADT/SmallString.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(raw_fd_streamTest, ReadAfterWrite) {
SmallString<64> Path;
int FD;
ASSERT_FALSE(sys::fs::createTemporaryFile("foo", "bar", FD, Path));
FileRemover Cleanup(Path);
std::error_code EC;
raw_fd_stream OS(Path, EC);
EXPECT_TRUE(!EC);
char Bytes[8];
OS.write("01234567", 8);
OS.seek(3);
EXPECT_EQ(OS.read(Bytes, 2), 2);
EXPECT_EQ(Bytes[0], '3');
EXPECT_EQ(Bytes[1], '4');
OS.seek(4);
OS.write("xyz", 3);
OS.seek(0);
EXPECT_EQ(OS.read(Bytes, 8), 8);
EXPECT_EQ(Bytes[0], '0');
EXPECT_EQ(Bytes[1], '1');
EXPECT_EQ(Bytes[2], '2');
EXPECT_EQ(Bytes[3], '3');
EXPECT_EQ(Bytes[4], 'x');
EXPECT_EQ(Bytes[5], 'y');
EXPECT_EQ(Bytes[6], 'z');
EXPECT_EQ(Bytes[7], '7');
}
TEST(raw_fd_streamTest, DynCast) {
{
std::error_code EC;
raw_fd_stream OS("-", EC);
EXPECT_TRUE(dyn_cast<raw_fd_stream>(&OS));
}
{
std::error_code EC;
raw_fd_ostream OS("-", EC);
EXPECT_FALSE(dyn_cast<raw_fd_stream>(&OS));
}
}
} // namespace
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