klayout/src/tl/unit_tests/tlStreamTests.cc

439 lines
10 KiB
C++

/*
KLayout Layout Viewer
Copyright (C) 2006-2022 Matthias Koefferlein
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "tlStream.h"
#include "tlUnitTest.h"
#include "tlFileUtils.h"
// Secret mode switchers for testing
namespace tl
{
TL_PUBLIC void file_utils_force_windows ();
TL_PUBLIC void file_utils_force_linux ();
TL_PUBLIC void file_utils_force_reset ();
}
TEST(InputPipe1)
{
tl::InputPipe pipe ("echo HELLOWORLD");
tl::InputStream str (pipe);
tl::TextInputStream tstr (str);
EXPECT_EQ (tstr.get_line (), "HELLOWORLD");
EXPECT_EQ (pipe.wait (), 0);
}
TEST(InputPipe2)
{
tl::InputPipe pipe ("thiscommanddoesnotexistithink 2>&1");
tl::InputStream str (pipe);
tl::TextInputStream tstr (str);
tstr.get_line ();
int ret = pipe.wait ();
tl::info << "Process exit code: " << ret;
EXPECT_NE (ret, 0);
}
TEST(OutputPipe1)
{
std::string tf = tmp_file ("pipe_out");
{
tl::OutputPipe pipe ("cat >" + tf);
tl::OutputStream str (pipe);
str << "Hello, world!";
}
{
tl::InputStream is (tf);
std::string s = is.read_all ();
EXPECT_EQ (s, "Hello, world!");
}
}
TEST(TextOutputStream)
{
std::string fn = tmp_file ("test.txt");
{
tl::OutputStream os (fn, tl::OutputStream::OM_Auto, false);
os << "Hello, world!\nWith another line\n\r\r\nseparated by a LFCR and CRLF.";
}
{
tl::InputStream is (fn);
std::string s = is.read_all ();
EXPECT_EQ (s, "Hello, world!\nWith another line\n\r\r\nseparated by a LFCR and CRLF.");
}
try {
tl::file_utils_force_linux ();
{
tl::OutputStream os (fn, tl::OutputStream::OM_Auto, true);
os << "Hello, world!\nWith another line\n\r\r\nseparated by a LFCR and CRLF.";
}
tl::InputStream is (fn);
std::string s = is.read_all ();
EXPECT_EQ (s, "Hello, world!\nWith another line\n\nseparated by a LFCR and CRLF.");
tl::file_utils_force_reset ();
} catch (...) {
tl::file_utils_force_reset ();
throw;
}
try {
tl::file_utils_force_windows ();
{
tl::OutputStream os (fn, tl::OutputStream::OM_Auto, true);
os << "Hello, world!\nWith another line\n\r\r\nseparated by a LFCR and CRLF.";
}
tl::InputStream is (fn);
std::string s = is.read_all ();
EXPECT_EQ (s, "Hello, world!\r\nWith another line\r\n\r\nseparated by a LFCR and CRLF.");
tl::file_utils_force_reset ();
} catch (...) {
tl::file_utils_force_reset ();
throw;
}
}
TEST(TextInputStream)
{
std::string fn = tmp_file ("test.txt");
{
tl::OutputStream os (fn, tl::OutputStream::OM_Auto, false);
os << "Hello, world!\nWith another line\n\r\r\nseparated by a LFCR and CRLF.";
}
{
tl::InputStream is (fn);
tl::TextInputStream tis (is);
EXPECT_EQ (tis.get_line (), "Hello, world!");
EXPECT_EQ (tis.line_number (), size_t (1));
EXPECT_EQ (tis.get_line (), "With another line");
EXPECT_EQ (tis.line_number (), size_t (2));
EXPECT_EQ (tis.peek_char (), '\n');
EXPECT_EQ (tis.get_line (), "");
EXPECT_EQ (tis.line_number (), size_t (3));
EXPECT_EQ (tis.peek_char (), 's');
EXPECT_EQ (tis.get_line (), "separated by a LFCR and CRLF.");
EXPECT_EQ (tis.line_number (), size_t (4));
EXPECT_EQ (tis.at_end (), true);
}
{
tl::InputStream is (fn);
tl::TextInputStream tis (is);
EXPECT_EQ (tis.read_all (5), "Hello");
}
{
tl::InputStream is (fn);
tl::TextInputStream tis (is);
EXPECT_EQ (tis.read_all (), "Hello, world!\nWith another line\n\nseparated by a LFCR and CRLF.");
}
}
namespace
{
class BrokenOutputStream
: public tl::OutputFile
{
public:
BrokenOutputStream (const std::string &path, int keep_backups)
: tl::OutputFile (path, keep_backups)
{ }
void write_file(const char *b, size_t n)
{
for (const char *p = b; p < b + n; ++p) {
if (*p == '!') {
throw tl::Exception ("Bang!");
}
}
tl::OutputFile::write (b, n);
}
};
}
TEST(SafeOutput)
{
std::string tp = tmp_file ("x");
{
tl::OutputStream os (tp);
os << "blabla\n";
}
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::OutputStream os (tp);
EXPECT_EQ (tl::file_exists (tp + ".~backup"), true);
EXPECT_EQ (tl::file_exists (tp), true);
os << "Hello, world!\n";
}
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::InputStream is (tp);
EXPECT_EQ (is.read_all (), "Hello, world!\n");
}
try {
BrokenOutputStream broken (tp, 0);
tl::OutputStream os (broken);
EXPECT_EQ (tl::file_exists (tp + ".~backup"), true);
EXPECT_EQ (tl::file_exists (tp), true);
os << "Hi!\n";
os.flush (); // raises the exception
EXPECT_EQ (true, false);
} catch (...) {
// '!' raises an exception
}
// The original content is restored now
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::InputStream is (tp);
EXPECT_EQ (is.read_all (), "Hello, world!\n");
}
try {
BrokenOutputStream *broken = new BrokenOutputStream (tp, 0);
tl::OutputStream os (broken);
EXPECT_EQ (tl::file_exists (tp + ".~backup"), true);
EXPECT_EQ (tl::file_exists (tp), true);
os << "Hi!\n";
os.flush (); // raises the exception
EXPECT_EQ (true, false);
} catch (...) {
// '!' raises an exception
}
// The original content is restored now
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::InputStream is (tp);
EXPECT_EQ (is.read_all (), "Hello, world!\n");
}
}
TEST(SafeOutput2)
{
std::string cd = tl::current_dir ();
tl_assert (tl::chdir (tmp_file (".")));
try {
std::string tmp_path = "x";
tl::rm_dir_recursive (tmp_path);
tl::mkpath (tmp_path);
std::string tp = tl::combine_path (tmp_path, "y");
{
tl::OutputStream os (tp);
os << "blabla\n";
}
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::OutputStream os (tp);
EXPECT_EQ (tl::file_exists (tp + ".~backup"), true);
EXPECT_EQ (tl::file_exists (tp), true);
os << "Hello, world!\n";
}
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::InputStream is (tp);
EXPECT_EQ (is.read_all (), "Hello, world!\n");
}
tl::chdir (cd);
} catch (...) {
tl::chdir (cd);
throw;
}
}
TEST(Backups)
{
std::string tp = tmp_file ("x");
{
tl::OutputStream os (tp, tl::OutputStream::OM_Auto, false, 2);
os << "1\n";
}
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp + ".1"), false);
EXPECT_EQ (tl::file_exists (tp + ".2"), false);
EXPECT_EQ (tl::file_exists (tp + ".3"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::InputStream is (tp);
EXPECT_EQ (is.read_all (), "1\n");
}
{
tl::OutputStream os (tp, tl::OutputStream::OM_Auto, false, 2);
EXPECT_EQ (tl::file_exists (tp + ".~backup"), true);
EXPECT_EQ (tl::file_exists (tp), true);
os << "2\n";
}
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp + ".1"), true);
EXPECT_EQ (tl::file_exists (tp + ".2"), false);
EXPECT_EQ (tl::file_exists (tp + ".3"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::InputStream is (tp);
EXPECT_EQ (is.read_all (), "2\n");
}
{
tl::InputStream is (tp + ".1");
EXPECT_EQ (is.read_all (), "1\n");
}
{
tl::OutputStream os (tp, tl::OutputStream::OM_Auto, false, 2);
EXPECT_EQ (tl::file_exists (tp + ".~backup"), true);
EXPECT_EQ (tl::file_exists (tp), true);
os << "3\n";
}
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp + ".1"), true);
EXPECT_EQ (tl::file_exists (tp + ".2"), true);
EXPECT_EQ (tl::file_exists (tp + ".3"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::InputStream is (tp);
EXPECT_EQ (is.read_all (), "3\n");
}
{
tl::InputStream is (tp + ".1");
EXPECT_EQ (is.read_all (), "2\n");
}
{
tl::InputStream is (tp + ".2");
EXPECT_EQ (is.read_all (), "1\n");
}
{
tl::OutputStream os (tp, tl::OutputStream::OM_Auto, false, 2);
EXPECT_EQ (tl::file_exists (tp + ".~backup"), true);
EXPECT_EQ (tl::file_exists (tp), true);
os << "4\n";
}
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp + ".1"), true);
EXPECT_EQ (tl::file_exists (tp + ".2"), true);
EXPECT_EQ (tl::file_exists (tp + ".3"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::InputStream is (tp);
EXPECT_EQ (is.read_all (), "4\n");
}
{
tl::InputStream is (tp + ".1");
EXPECT_EQ (is.read_all (), "3\n");
}
{
tl::InputStream is (tp + ".2");
EXPECT_EQ (is.read_all (), "2\n");
}
try {
BrokenOutputStream broken (tp, 2);
tl::OutputStream os (broken);
EXPECT_EQ (tl::file_exists (tp + ".~backup"), true);
EXPECT_EQ (tl::file_exists (tp), true);
os << "5!\n";
os.flush (); // raises the exception
EXPECT_EQ (true, false);
} catch (...) {
// '!' raises an exception
}
EXPECT_EQ (tl::file_exists (tp + ".~backup"), false);
EXPECT_EQ (tl::file_exists (tp + ".1"), true);
EXPECT_EQ (tl::file_exists (tp + ".2"), true);
EXPECT_EQ (tl::file_exists (tp + ".3"), false);
EXPECT_EQ (tl::file_exists (tp), true);
{
tl::InputStream is (tp);
EXPECT_EQ (is.read_all (), "4\n");
}
{
tl::InputStream is (tp + ".1");
EXPECT_EQ (is.read_all (), "3\n");
}
{
tl::InputStream is (tp + ".2");
EXPECT_EQ (is.read_all (), "2\n");
}
}