office-gobmx/o3tl/qa/test-span.cxx
Stephan Bergmann 73df1aea4f array_view was changed to span in upcoming C++20
...see <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0122r7.pdf>
"span: bounds-safe views for sequences of objects".  o3tl::span is still an
incomplete approximation of std::span; removed those o3tl::array_view members
that are not present in std::span (and were not used in the code).

Relies on C++17 __has_include to use standard <span> where available (e.g., in
LLVM 7 libc++).

Change-Id: I82a7e246b61b2456fa6183025d25eec4121ad3c9
Reviewed-on: https://gerrit.libreoffice.org/66215
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
2019-01-13 11:27:30 +01:00

65 lines
2.1 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <sal/config.h>
#include <utility>
#include <cppunit/TestAssert.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <o3tl/span.hxx>
namespace {
class Test: public CppUnit::TestFixture {
private:
CPPUNIT_TEST_SUITE(Test);
CPPUNIT_TEST(testOperations);
CPPUNIT_TEST_SUITE_END();
void testOperations() {
int const some_data[] { 1, 2, 3 };
o3tl::span<int const> v(some_data);
CPPUNIT_ASSERT_EQUAL(1, *v.begin());
CPPUNIT_ASSERT_EQUAL(
o3tl::span<int>::difference_type(3), v.end() - v.begin());
CPPUNIT_ASSERT_EQUAL(1, *v.cbegin());
CPPUNIT_ASSERT_EQUAL(
o3tl::span<int>::difference_type(3), v.cend() - v.cbegin());
CPPUNIT_ASSERT_EQUAL(3, *v.rbegin());
CPPUNIT_ASSERT_EQUAL(
o3tl::span<int>::difference_type(3), v.rend() - v.rbegin());
CPPUNIT_ASSERT_EQUAL(3, *v.crbegin());
CPPUNIT_ASSERT_EQUAL(
o3tl::span<int>::difference_type(3), v.crend() - v.crbegin());
CPPUNIT_ASSERT_EQUAL(o3tl::span<int>::index_type(3), v.size());
CPPUNIT_ASSERT(!v.empty());
CPPUNIT_ASSERT_EQUAL(2, v[1]);
CPPUNIT_ASSERT_EQUAL(1, *v.data());
{
int const d1[] { 1, 2 };
int const d2[] { 3, 4, 5, 6 };
o3tl::span<int const> v1( d1 );
o3tl::span<int const> v2( d2 );
std::swap(v1, v2);
CPPUNIT_ASSERT_EQUAL(o3tl::span<int>::index_type(4), v1.size());
CPPUNIT_ASSERT_EQUAL(o3tl::span<int>::index_type(2), v2.size());
}
}
};
CPPUNIT_TEST_SUITE_REGISTRATION(Test);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */