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75 lines
1.3 KiB
C++
75 lines
1.3 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/TestSuite.h>
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#include <AK/NeverDestroyed.h>
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#include <AK/StdLibExtras.h>
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struct Counter {
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Counter() = default;
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~Counter() { ++num_destroys; }
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Counter(const Counter&)
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{
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++num_copies;
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}
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Counter(Counter&&) { ++num_moves; }
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int num_copies {};
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int num_moves {};
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int num_destroys {};
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};
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TEST_CASE(should_construct_by_copy)
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{
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Counter c {};
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AK::NeverDestroyed<Counter> n { c };
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EXPECT_EQ(1, n->num_copies);
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EXPECT_EQ(0, n->num_moves);
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}
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TEST_CASE(should_construct_by_move)
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{
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Counter c {};
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AK::NeverDestroyed<Counter> n { move(c) };
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EXPECT_EQ(0, n->num_copies);
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EXPECT_EQ(1, n->num_moves);
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}
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TEST_CASE(should_not_destroy)
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{
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Counter* c = nullptr;
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{
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AK::NeverDestroyed<Counter> n {};
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c = &n.get();
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}
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EXPECT_EQ(0, c->num_destroys);
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}
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TEST_CASE(should_provide_dereference_operator)
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{
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AK::NeverDestroyed<Counter> n {};
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EXPECT_EQ(0, n->num_destroys);
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}
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TEST_CASE(should_provide_indirection_operator)
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{
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AK::NeverDestroyed<Counter> n {};
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EXPECT_EQ(0, (*n).num_destroys);
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}
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TEST_CASE(should_provide_basic_getter)
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{
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AK::NeverDestroyed<Counter> n {};
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EXPECT_EQ(0, n.get().num_destroys);
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}
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TEST_MAIN(NeverDestroyed)
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