diff options
author | Karen Arutyunov <karen@codesynthesis.com> | 2016-07-02 17:21:54 +0300 |
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committer | Karen Arutyunov <karen@codesynthesis.com> | 2016-07-07 17:39:46 +0300 |
commit | 5b1c20f2315cd7fc624ffd31abdcc03b409bfcb2 (patch) | |
tree | c5c7b76dead92292b84586bda1b1256170195c48 /tests/fdstream | |
parent | 15634965e8f0ab753898f5607ba11288556d1235 (diff) |
Add cpfile()
Diffstat (limited to 'tests/fdstream')
-rw-r--r-- | tests/fdstream/buildfile | 7 | ||||
-rw-r--r-- | tests/fdstream/driver.cxx | 135 |
2 files changed, 142 insertions, 0 deletions
diff --git a/tests/fdstream/buildfile b/tests/fdstream/buildfile new file mode 100644 index 0000000..bc4c6d2 --- /dev/null +++ b/tests/fdstream/buildfile @@ -0,0 +1,7 @@ +# file : tests/fdstream/buildfile +# copyright : Copyright (c) 2014-2016 Code Synthesis Ltd +# license : MIT; see accompanying LICENSE file + +exe{driver}: cxx{driver} ../../butl/lib{butl} + +include ../../butl/ diff --git a/tests/fdstream/driver.cxx b/tests/fdstream/driver.cxx new file mode 100644 index 0000000..3972473 --- /dev/null +++ b/tests/fdstream/driver.cxx @@ -0,0 +1,135 @@ +// file : tests/fdstream/driver.cxx -*- C++ -*- +// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd +// license : MIT; see accompanying LICENSE file + +#include <string> +#include <cassert> +#include <system_error> + +#include <butl/path> +#include <butl/fdstream> +#include <butl/filesystem> + +using namespace std; +using namespace butl; + +static const string text1 ("ABCDEF\nXYZ"); +static const string text2 ("12"); // Keep shorter than text1. +static const string text3 ("ABCDEF\r\nXYZ"); + +static string +from_file (const path& f, fdopen_mode m = fdopen_mode::none) +{ + ifdstream ifs (fdopen (f, m | fdopen_mode::in)); + ifs.exceptions (ifdstream::badbit); + + string s; + getline (ifs, s, '\0'); + return s; +} + +static void +to_file (const path& f, const string& s, fdopen_mode m = fdopen_mode::none) +{ + ofdstream ofs (fdopen (f, m | fdopen_mode::out)); + ofs.exceptions (ofdstream::badbit | ofdstream::failbit); + ofs << s; +} + +int +main () +{ + dir_path td (dir_path::temp_directory () / dir_path ("butl-fdstream")); + + // Recreate the temporary directory (that possibly exists from the previous + // faulty run) for the test files. Delete the directory only if the test + // succeeds to simplify the failure research. + // + try_rmdir_r (td); + assert (try_mkdir (td) == mkdir_status::success); + + path f (td / path ("file")); + + try + { + fdopen (f, fdopen_mode::out); // fdopen_mode::create is missed. + assert (false); + } + catch (const system_error&) + { + } + + // Read from the newly created empty file. + // + assert (from_file (f, fdopen_mode::create) == ""); + assert (try_rmfile (f) == rmfile_status::success); + + to_file (f, text1, fdopen_mode::create); + assert (from_file (f) == text1); + + // Read from the file opened in R/W mode. + // + assert (from_file (f, fdopen_mode::out) == text1); + + try + { + // Fail to create if the file already exists. + // + fdopen ( + f, fdopen_mode::out | fdopen_mode::create | fdopen_mode::exclusive); + + assert (false); + } + catch (const system_error&) + { + } + + // Write text2 over text1. + // + to_file (f, text2); + string s (text2); + s += string (text1, text2.size ()); + assert (from_file (f) == s); + + // Truncate before reading. + // + assert (from_file (f, fdopen_mode::out | fdopen_mode::truncate) == ""); + + // Append to the file. + // + to_file (f, text1, fdopen_mode::truncate); + to_file (f, text2, fdopen_mode::append); + assert (from_file (f) == text1 + text2); + +#ifndef _WIN32 + + // Fail for an existing symlink to unexistent file. + // + path link (td / path ("link")); + mksymlink (td / path ("unexistent"), link); + + try + { + fdopen ( + link, fdopen_mode::out | fdopen_mode::create | fdopen_mode::exclusive); + + assert (false); + } + catch (const system_error&) + { + } + +#else + + // Check translation modes. + // + to_file (f, text1, fdopen_mode::truncate); + assert (from_file (f, fdopen_mode::binary) == text3); + + to_file (f, text3, fdopen_mode::truncate | fdopen_mode::binary); + assert (from_file (f) == text1); + +#endif + + rmdir_r (td); +} |