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097ba299ca
This is used by https://reviews.llvm.org/D86905 to support bitcode writer's incremental flush.
68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
//===- llvm/unittest/Support/raw_fd_stream_test.cpp - raw_fd_stream tests -===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Config/llvm-config.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/FileUtilities.h"
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#include "llvm/Support/raw_ostream.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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TEST(raw_fd_streamTest, ReadAfterWrite) {
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SmallString<64> Path;
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int FD;
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ASSERT_FALSE(sys::fs::createTemporaryFile("foo", "bar", FD, Path));
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FileRemover Cleanup(Path);
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std::error_code EC;
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raw_fd_stream OS(Path, EC);
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EXPECT_TRUE(!EC);
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char Bytes[8];
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OS.write("01234567", 8);
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OS.seek(3);
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EXPECT_EQ(OS.read(Bytes, 2), 2);
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EXPECT_EQ(Bytes[0], '3');
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EXPECT_EQ(Bytes[1], '4');
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OS.seek(4);
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OS.write("xyz", 3);
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OS.seek(0);
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EXPECT_EQ(OS.read(Bytes, 8), 8);
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EXPECT_EQ(Bytes[0], '0');
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EXPECT_EQ(Bytes[1], '1');
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EXPECT_EQ(Bytes[2], '2');
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EXPECT_EQ(Bytes[3], '3');
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EXPECT_EQ(Bytes[4], 'x');
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EXPECT_EQ(Bytes[5], 'y');
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EXPECT_EQ(Bytes[6], 'z');
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EXPECT_EQ(Bytes[7], '7');
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}
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TEST(raw_fd_streamTest, DynCast) {
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{
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std::error_code EC;
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raw_fd_stream OS("-", EC);
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EXPECT_TRUE(dyn_cast<raw_fd_stream>(&OS));
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}
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{
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std::error_code EC;
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raw_fd_ostream OS("-", EC);
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EXPECT_FALSE(dyn_cast<raw_fd_stream>(&OS));
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}
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}
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} // namespace
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