1 | //===- llvm/unittest/Support/raw_fd_stream_test.cpp - raw_fd_stream tests -===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | #include "llvm/ADT/SmallString.h" |
10 | #include "llvm/Config/llvm-config.h" |
11 | #include "llvm/Support/Casting.h" |
12 | #include "llvm/Support/FileSystem.h" |
13 | #include "llvm/Support/FileUtilities.h" |
14 | #include "llvm/Support/raw_ostream.h" |
15 | #include "gtest/gtest.h" |
16 | |
17 | using namespace llvm; |
18 | |
19 | namespace { |
20 | |
21 | TEST(raw_fd_streamTest, ReadAfterWrite) { |
22 | SmallString<64> Path; |
23 | int FD; |
24 | ASSERT_FALSE(sys::fs::createTemporaryFile("foo" , "bar" , FD, Path)); |
25 | FileRemover Cleanup(Path); |
26 | std::error_code EC; |
27 | raw_fd_stream OS(Path, EC); |
28 | EXPECT_TRUE(!EC); |
29 | |
30 | char Bytes[8]; |
31 | |
32 | OS.write(Ptr: "01234567" , Size: 8); |
33 | |
34 | OS.seek(off: 3); |
35 | EXPECT_EQ(OS.read(Bytes, 2), 2); |
36 | EXPECT_EQ(Bytes[0], '3'); |
37 | EXPECT_EQ(Bytes[1], '4'); |
38 | |
39 | OS.seek(off: 4); |
40 | OS.write(Ptr: "xyz" , Size: 3); |
41 | |
42 | OS.seek(off: 0); |
43 | EXPECT_EQ(OS.read(Bytes, 8), 8); |
44 | EXPECT_EQ(Bytes[0], '0'); |
45 | EXPECT_EQ(Bytes[1], '1'); |
46 | EXPECT_EQ(Bytes[2], '2'); |
47 | EXPECT_EQ(Bytes[3], '3'); |
48 | EXPECT_EQ(Bytes[4], 'x'); |
49 | EXPECT_EQ(Bytes[5], 'y'); |
50 | EXPECT_EQ(Bytes[6], 'z'); |
51 | EXPECT_EQ(Bytes[7], '7'); |
52 | } |
53 | |
54 | TEST(raw_fd_streamTest, DynCast) { |
55 | { |
56 | std::error_code EC; |
57 | raw_fd_stream OS("-" , EC); |
58 | EXPECT_TRUE(dyn_cast<raw_fd_stream>(&OS)); |
59 | } |
60 | { |
61 | std::error_code EC; |
62 | raw_fd_ostream OS("-" , EC); |
63 | EXPECT_FALSE(dyn_cast<raw_fd_stream>(&OS)); |
64 | } |
65 | } |
66 | |
67 | } // namespace |
68 | |