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74 lines
2.3 KiB
74 lines
2.3 KiB
5 months ago
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/* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include <gtest/gtest.h>
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#include "include/template_utils.h"
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namespace template_utils_unittest {
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class Base {
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public:
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int id() const { return 1; }
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// Needed to make compiler understand that it's a polymorphic class.
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virtual ~Base() {}
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// To silence -Wdeprecated-copy.
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Base() {}
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Base(const Base &) = default;
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};
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class Descendent : public Base {
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public:
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int id() const { return 2; }
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};
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TEST(TemplateUtilsTest, DownCastReference) {
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Descendent descendent;
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Base &baseref = descendent;
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auto descendentref = down_cast<Descendent &>(baseref);
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EXPECT_EQ(1, baseref.id());
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EXPECT_EQ(2, descendentref.id());
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}
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TEST(TemplateUtilsTest, DownCastRvalueReference) {
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Descendent descendent;
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Base &&baseref = Descendent();
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auto descendentref = down_cast<Descendent &&>(baseref);
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EXPECT_EQ(1, baseref.id());
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EXPECT_EQ(2, descendentref.id());
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}
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TEST(TemplateUtilsTest, DownCastPointer) {
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Descendent descendent;
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Base *baseref = &descendent;
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auto descendentref = down_cast<Descendent *>(baseref);
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EXPECT_EQ(1, baseref->id());
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EXPECT_EQ(2, descendentref->id());
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}
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} // namespace template_utils_unittest
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