| 1 | #include "shared_ptr.h" |
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| 2 | #include "UnitTest++.h" |
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| 3 | #include <stdexcept> |
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| 4 | #include <vector> |
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| 5 | |
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| 6 | class Foo { |
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| 7 | private: |
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| 8 | int x; |
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| 9 | |
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| 10 | public: |
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| 11 | Foo ( int x ) : x ( x ) { } |
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| 12 | |
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| 13 | int get_x() const { |
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| 14 | return x; |
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| 15 | } |
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| 16 | |
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| 17 | void set_x ( int nx ) { |
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| 18 | x = nx; |
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| 19 | } |
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| 20 | }; |
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| 21 | |
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| 22 | typedef std::vector<bdm::shared_ptr<Foo> > TFooVector; |
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| 23 | |
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| 24 | typedef std::vector<bdm::shared_ptr<const Foo> > TConstFooVector; |
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| 25 | |
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| 26 | TEST ( test_shared_ptr ) { |
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| 27 | TFooVector v; |
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| 28 | |
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| 29 | bdm::shared_ptr<Foo> zero; |
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| 30 | CHECK_EQUAL ( 0l, zero.use_count() ); |
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| 31 | bdm::shared_ptr<Foo> z2 ( zero ); |
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| 32 | CHECK_EQUAL ( 0l, z2.use_count() ); |
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| 33 | |
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| 34 | bdm::shared_ptr<Foo> one ( new Foo ( 1 ) ); |
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| 35 | v.push_back ( one ); |
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| 36 | CHECK ( !one.unique() ); |
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| 37 | |
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| 38 | v.push_back ( one ); |
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| 39 | v.push_back ( bdm::shared_ptr<Foo> ( new Foo ( 2 ) ) ); |
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| 40 | CHECK_EQUAL ( static_cast<TFooVector::size_type> ( 3 ), v.size() ); |
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| 41 | |
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| 42 | CHECK ( v[0] == v[1] ); |
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| 43 | CHECK ( v[1] != v[2] ); |
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| 44 | |
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| 45 | Foo c ( * ( v[0] ) ); |
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| 46 | CHECK_EQUAL ( 1, c.get_x() ); |
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| 47 | |
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| 48 | Foo *p = v[1].get(); |
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| 49 | CHECK_EQUAL ( 1, p->get_x() ); |
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| 50 | p->set_x ( 12 ); |
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| 51 | CHECK_EQUAL ( 12, one->get_x() ); |
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| 52 | |
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| 53 | CHECK ( v[2].unique() ); |
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| 54 | CHECK_EQUAL ( 2, v[2]->get_x() ); |
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| 55 | } |
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| 56 | |
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| 57 | TEST ( test_shared_ptr_const ) { |
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| 58 | TConstFooVector v; |
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| 59 | |
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| 60 | bdm::shared_ptr<const Foo> zero; |
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| 61 | CHECK_EQUAL ( 0l, zero.use_count() ); |
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| 62 | bdm::shared_ptr<const Foo> z2 ( zero ); |
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| 63 | CHECK_EQUAL ( 0l, z2.use_count() ); |
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| 64 | |
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| 65 | bdm::shared_ptr<const Foo> one ( new Foo ( 1 ) ); |
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| 66 | v.push_back ( one ); |
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| 67 | CHECK ( !one.unique() ); |
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| 68 | |
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| 69 | v.push_back ( one ); |
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| 70 | v.push_back ( bdm::shared_ptr<const Foo> ( new Foo ( 2 ) ) ); |
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| 71 | CHECK_EQUAL ( static_cast<TConstFooVector::size_type> ( 3 ), v.size() ); |
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| 72 | |
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| 73 | CHECK ( v[0] == v[1] ); |
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| 74 | CHECK ( v[1] != v[2] ); |
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| 75 | |
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| 76 | Foo c ( * ( v[0] ) ); |
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| 77 | CHECK_EQUAL ( 1, c.get_x() ); |
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| 78 | |
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| 79 | const Foo *p = v[1].get(); |
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| 80 | CHECK_EQUAL ( 1, p->get_x() ); |
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| 81 | |
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| 82 | CHECK ( v[2].unique() ); |
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| 83 | CHECK_EQUAL ( 2, v[2]->get_x() ); |
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| 84 | |
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| 85 | bdm::shared_ptr<Foo> non_const; |
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| 86 | bdm::shared_ptr<const Foo> another ( non_const ); |
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| 87 | CHECK ( !non_const.unique() ); |
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| 88 | } |
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| 89 | |
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| 90 | // tested runtime check is only in debug version |
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| 91 | #ifndef NDEBUG |
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| 92 | TEST ( test_shared_ptr_error ) { |
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| 93 | bdm::shared_ptr<Foo> empty; |
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| 94 | try { |
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| 95 | Foo x(*empty); |
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| 96 | CHECK ( false ); |
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| 97 | } catch ( std::runtime_error &exc ) { |
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| 98 | CHECK ( exc.what() ); |
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| 99 | } |
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| 100 | } |
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| 101 | #endif |
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