klayout/src/tl/unit_tests/tlOptionalTests.cc

98 lines
2.5 KiB
C++

/*
KLayout Layout Viewer
Copyright (C) 2006-2025 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 "tlOptional.h"
#include "tlUnitTest.h"
namespace
{
TEST(1_Basic)
{
tl::optional<int> opt;
// value not set
EXPECT_EQ (opt.has_value (), false);
EXPECT_EQ (opt.operator-> (), (int *) 0);
EXPECT_EQ (((const tl::optional<int> &) opt).operator-> (), (const int *) 0);
EXPECT_EQ (tl::to_string (opt), "");
try {
opt.value (); // asserts
EXPECT_EQ (true, false);
} catch (...) {
}
// make_optional, assignment
opt = tl::make_optional (17);
// value set
EXPECT_EQ (opt.has_value (), true);
EXPECT_EQ (opt.value (), 17);
EXPECT_EQ (tl::to_string (opt), "17");
EXPECT_EQ (((const tl::optional<int> &) opt).value (), 17);
EXPECT_EQ (*opt, 17);
EXPECT_EQ (*((const tl::optional<int> &) opt), 17);
EXPECT_EQ (*(opt.operator-> ()), 17);
EXPECT_EQ (*(((const tl::optional<int> &) opt).operator-> ()), 17);
// compare operators
EXPECT_EQ (opt == tl::make_optional (-1), false);
EXPECT_EQ (opt == tl::make_optional (17), true);
EXPECT_EQ (opt == tl::optional<int> (), false);
EXPECT_EQ (opt != tl::make_optional (-1), true);
EXPECT_EQ (opt != tl::make_optional (17), false);
EXPECT_EQ (opt != tl::optional<int> (), true);
// copy ctor
tl::optional<int> opt2 (opt);
EXPECT_EQ (opt2.has_value (), true);
EXPECT_EQ (opt2.value (), 17);
// reset method
opt = tl::make_optional (17);
opt.reset ();
EXPECT_EQ (opt.has_value (), false);
EXPECT_EQ (opt == tl::optional<int> (), true);
EXPECT_EQ (opt != tl::optional<int> (), false);
// tl::nullopt tag
opt = tl::make_optional (17);
opt = tl::optional<int> (tl::nullopt);
EXPECT_EQ (opt.has_value (), false);
EXPECT_EQ (opt == tl::optional<int> (), true);
EXPECT_EQ (opt != tl::optional<int> (), false);
}
}