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path: root/util/generic/deque_ut.cpp
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#include "deque.h" 
 
#include <library/cpp/testing/unittest/registar.h>
 
#include <utility>
#include "yexception.h" 
 
class TDequeTest: public TTestBase { 
    UNIT_TEST_SUITE(TDequeTest); 
    UNIT_TEST(TestConstructorsAndAssignments); 
    UNIT_TEST(TestDeque1); 
    UNIT_TEST(TestAt); 
    UNIT_TEST(TestInsert); 
    UNIT_TEST(TestErase); 
    UNIT_TEST(TestAutoRef); 
    UNIT_TEST_SUITE_END(); 
 
protected: 
    void TestConstructorsAndAssignments(); 
    void TestDeque1(); 
    void TestInsert(); 
    void TestErase(); 
    void TestAt(); 
    void TestAutoRef(); 
}; 
 
UNIT_TEST_SUITE_REGISTRATION(TDequeTest); 
 
void TDequeTest::TestConstructorsAndAssignments() {
    using container = TDeque<int>;

    container c1;
    c1.push_back(100);
    c1.push_back(200);

    container c2(c1);

    UNIT_ASSERT_VALUES_EQUAL(2, c1.size());
    UNIT_ASSERT_VALUES_EQUAL(2, c2.size());
    UNIT_ASSERT_VALUES_EQUAL(100, c1.at(0));
    UNIT_ASSERT_VALUES_EQUAL(200, c2.at(1));

    container c3(std::move(c1));

    UNIT_ASSERT_VALUES_EQUAL(0, c1.size());
    UNIT_ASSERT_VALUES_EQUAL(2, c3.size());
    UNIT_ASSERT_VALUES_EQUAL(100, c3.at(0));

    c2.push_back(300);
    c3 = c2;

    UNIT_ASSERT_VALUES_EQUAL(3, c2.size());
    UNIT_ASSERT_VALUES_EQUAL(3, c3.size());
    UNIT_ASSERT_VALUES_EQUAL(300, c3.at(2));

    c2.push_back(400);
    c3 = std::move(c2);

    UNIT_ASSERT_VALUES_EQUAL(0, c2.size());
    UNIT_ASSERT_VALUES_EQUAL(4, c3.size());
    UNIT_ASSERT_VALUES_EQUAL(400, c3.at(3));

    int array[] = {2, 3, 4};
    container c4 = {2, 3, 4};
    UNIT_ASSERT_VALUES_EQUAL(c4, container(std::begin(array), std::end(array)));
}

void TDequeTest::TestDeque1() { 
    TDeque<int> d;
    UNIT_ASSERT(!d);

    d.push_back(4); 
    d.push_back(9); 
    d.push_back(16); 
    d.push_front(1); 
 
    UNIT_ASSERT(d);

    UNIT_ASSERT(d[0] == 1); 
    UNIT_ASSERT(d[1] == 4); 
    UNIT_ASSERT(d[2] == 9); 
    UNIT_ASSERT(d[3] == 16); 
 
    d.pop_front(); 
    d[2] = 25; 
 
    UNIT_ASSERT(d[0] == 4); 
    UNIT_ASSERT(d[1] == 9); 
    UNIT_ASSERT(d[2] == 25); 
 
    //Some compile time tests: 
    TDeque<int>::iterator dit = d.begin();
    TDeque<int>::const_iterator cdit(d.begin());
 
    UNIT_ASSERT((dit - cdit) == 0); 
    UNIT_ASSERT((cdit - dit) == 0); 
    UNIT_ASSERT((dit - dit) == 0); 
    UNIT_ASSERT((cdit - cdit) == 0); 
    UNIT_ASSERT(!((dit < cdit) || (dit > cdit) || (dit != cdit) || !(dit <= cdit) || !(dit >= cdit))); 
} 
 
void TDequeTest::TestInsert() { 
    TDeque<int> d;
    d.push_back(0); 
    d.push_back(1); 
    d.push_back(2); 
 
    UNIT_ASSERT(d.size() == 3); 
 
    TDeque<int>::iterator dit;
 
    //Insertion before begin: 
    dit = d.insert(d.begin(), 3); 
    UNIT_ASSERT(dit != d.end()); 
    UNIT_ASSERT(*dit == 3); 
    UNIT_ASSERT(d.size() == 4); 
    UNIT_ASSERT(d[0] == 3); 
 
    //Insertion after begin: 
    dit = d.insert(d.begin() + 1, 4); 
    UNIT_ASSERT(dit != d.end()); 
    UNIT_ASSERT(*dit == 4); 
    UNIT_ASSERT(d.size() == 5); 
    UNIT_ASSERT(d[1] == 4); 
 
    //Insertion at end: 
    dit = d.insert(d.end(), 5); 
    UNIT_ASSERT(dit != d.end()); 
    UNIT_ASSERT(*dit == 5); 
    UNIT_ASSERT(d.size() == 6); 
    UNIT_ASSERT(d[5] == 5); 
 
    //Insertion before last element: 
    dit = d.insert(d.end() - 1, 6); 
    UNIT_ASSERT(dit != d.end()); 
    UNIT_ASSERT(*dit == 6); 
    UNIT_ASSERT(d.size() == 7); 
    UNIT_ASSERT(d[5] == 6); 
 
    //Insertion of several elements before begin 
    d.insert(d.begin(), 2, 7); 
    UNIT_ASSERT(d.size() == 9); 
    UNIT_ASSERT(d[0] == 7); 
    UNIT_ASSERT(d[1] == 7); 
 
    //Insertion of several elements after begin 
    //There is more elements to insert than elements before insertion position 
    d.insert(d.begin() + 1, 2, 8); 
    UNIT_ASSERT(d.size() == 11); 
    UNIT_ASSERT(d[1] == 8); 
    UNIT_ASSERT(d[2] == 8); 
 
    //There is less elements to insert than elements before insertion position 
    d.insert(d.begin() + 3, 2, 9); 
    UNIT_ASSERT(d.size() == 13); 
    UNIT_ASSERT(d[3] == 9); 
    UNIT_ASSERT(d[4] == 9); 
 
    //Insertion of several elements at end: 
    d.insert(d.end(), 2, 10); 
    UNIT_ASSERT(d.size() == 15); 
    UNIT_ASSERT(d[14] == 10); 
    UNIT_ASSERT(d[13] == 10); 
 
    //Insertion of several elements before last: 
    //There is more elements to insert than elements after insertion position 
    d.insert(d.end() - 1, 2, 11); 
    UNIT_ASSERT(d.size() == 17); 
    UNIT_ASSERT(d[15] == 11); 
    UNIT_ASSERT(d[14] == 11); 
 
    //There is less elements to insert than elements after insertion position 
    d.insert(d.end() - 3, 2, 12); 
    UNIT_ASSERT(d.size() == 19); 
    UNIT_ASSERT(d[15] == 12); 
    UNIT_ASSERT(d[14] == 12); 
} 
 
void TDequeTest::TestAt() { 
    TDeque<int> d;
    TDeque<int> const& cd = d;
 
    d.push_back(10); 
    UNIT_ASSERT(d.at(0) == 10); 
    d.at(0) = 20; 
    UNIT_ASSERT(cd.at(0) == 20); 
 
    for (;;) { 
        try { 
            d.at(1) = 20; 
            UNIT_ASSERT(false); 
        } catch (...) { 
            return; 
        } 
    } 
} 
 
void TDequeTest::TestAutoRef() { 
    int i; 
    TDeque<int> ref;
    for (i = 0; i < 5; ++i) { 
        ref.push_back(i); 
    } 
 
    TDeque<TDeque<int>> d_d_int(1, ref);
    d_d_int.push_back(d_d_int[0]); 
    d_d_int.push_back(ref); 
    d_d_int.push_back(d_d_int[0]); 
    d_d_int.push_back(d_d_int[0]); 
    d_d_int.push_back(ref); 
 
    for (i = 0; i < 5; ++i) { 
        UNIT_ASSERT(d_d_int[i] == ref); 
    } 
} 
 
void TDequeTest::TestErase() { 
    TDeque<int> dint;
    dint.push_back(3); 
    dint.push_front(2); 
    dint.push_back(4); 
    dint.push_front(1); 
    dint.push_back(5); 
    dint.push_front(0); 
    dint.push_back(6); 
 
    TDeque<int>::iterator it(dint.begin() + 1);
    UNIT_ASSERT(*it == 1); 
 
    dint.erase(dint.begin()); 
    UNIT_ASSERT(*it == 1); 
 
    it = dint.end() - 2; 
    UNIT_ASSERT(*it == 5); 
 
    dint.erase(dint.end() - 1); 
    UNIT_ASSERT(*it == 5); 
 
    dint.push_back(6); 
    dint.push_front(0); 
 
    it = dint.begin() + 2; 
    UNIT_ASSERT(*it == 2); 
 
    dint.erase(dint.begin(), dint.begin() + 2); 
    UNIT_ASSERT(*it == 2); 
 
    it = dint.end() - 3; 
    UNIT_ASSERT(*it == 4); 
 
    dint.erase(dint.end() - 2, dint.end()); 
    UNIT_ASSERT(*it == 4); 
}