LinqTest.cpp 7.08 KB
Newer Older
k06a's avatar
k06a committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
#include <list>
#include <deque>
#include <vector>
#include <string>

#include <gtest/gtest.h>

#include "boolinq.h"

using namespace boolinq;

// Where Tests

TEST(Linq, WhereOdd)
{
    std::vector<int> src;
    src.push_back(1);
    src.push_back(2);
    src.push_back(3);
    src.push_back(4);
    src.push_back(5);
    src.push_back(6);

    auto rng = from(src).where([](int a){return a%2 == 1;});

    for (int i = 1; i <= 5; i+=2)
    {
Anton Bukov's avatar
Anton Bukov committed
28
        EXPECT_EQ(i, rng.nextObject());
k06a's avatar
k06a committed
29 30
    }

Anton Bukov's avatar
Anton Bukov committed
31
    EXPECT_THROW(rng.nextObject(), EnumeratorEndException);
k06a's avatar
k06a committed
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
}

TEST(Linq, WhereOdd_WhereLess)
{
    std::vector<int> src;
    src.push_back(1);
    src.push_back(2);
    src.push_back(3);
    src.push_back(4);
    src.push_back(5);
    src.push_back(6);
    src.push_back(7);
    src.push_back(8);

    auto rng = from(src).where([](int a){return a%2 == 1;})
                        .where([](int a){return a < 4;});

    for (int i = 1; i <= 3; i+=2)
    {
Anton Bukov's avatar
Anton Bukov committed
51
        EXPECT_EQ(i, rng.nextObject());
k06a's avatar
k06a committed
52 53
    }

Anton Bukov's avatar
Anton Bukov committed
54
    EXPECT_THROW(rng.nextObject(), EnumeratorEndException);
k06a's avatar
k06a committed
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
}

TEST(Linq, WhereLess_WhereOdd)
{
    std::vector<int> src;
    src.push_back(1);
    src.push_back(2);
    src.push_back(3);
    src.push_back(4);
    src.push_back(5);
    src.push_back(6);
    src.push_back(7);
    src.push_back(8);

    auto rng = from(src).where([](int a){return a < 4;})
Anton Bukov's avatar
Anton Bukov committed
70 71
                        .where([](int a){return a%2 == 1;})
                        .toVector();
k06a's avatar
k06a committed
72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93

    std::vector<int> ans;
    ans.push_back(1);
    ans.push_back(3);

    EXPECT_EQ(ans,rng);
}

TEST(Linq, WhereLess_WhereOdd_OrderByDesc)
{
    std::vector<int> src;
    src.push_back(1);
    src.push_back(2);
    src.push_back(3);
    src.push_back(4);
    src.push_back(5);
    src.push_back(6);
    src.push_back(7);
    src.push_back(8);

    auto rng = from(src).where([](int a){return a < 6;})
                        .where([](int a){return a%2 == 1;})
Anton Bukov's avatar
Anton Bukov committed
94 95
                        .orderBy([](int a){return -a;})
                        .toVector();
k06a's avatar
k06a committed
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116

    std::vector<int> ans;
    ans.push_back(5);
    ans.push_back(3);
    ans.push_back(1);

    EXPECT_EQ(ans,rng);
}

TEST(Linq, WhereOdd_ToVector)
{
    std::vector<int> src;
    src.push_back(1);
    src.push_back(2);
    src.push_back(3);
    src.push_back(4);
    src.push_back(5);
    src.push_back(6);
    src.push_back(7);
    src.push_back(8);

Anton Bukov's avatar
Anton Bukov committed
117 118
    auto dst = from(src).where([](int a){return a%2 == 1;})
                        .toVector();
k06a's avatar
k06a committed
119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210

    std::vector<int> ans;
    ans.push_back(1);
    ans.push_back(3);
    ans.push_back(5);
    ans.push_back(7);
    
    EXPECT_EQ(ans,dst);
}

TEST(Linq, WhereOdd_WhereLess_SelectMul2_ToVector)
{
    std::vector<int> src;
    src.push_back(1);
    src.push_back(2);
    src.push_back(3);
    src.push_back(4);
    src.push_back(5);
    src.push_back(6);
    src.push_back(7);
    src.push_back(8);

    auto dst = from(src).where([](int a){return a%2 == 1;})
                        .where([](int a){return a < 6;})
                        .select([](int a){return a*2;})
                        .toVector();

    std::vector<int> ans;
    ans.push_back(2);
    ans.push_back(6);
    ans.push_back(10);

    EXPECT_EQ(ans,dst);
}

TEST(Linq, WhereOdd_WhereLess_SelectMul2_Reverse_ToVector)
{
    std::vector<int> src;
    src.push_back(1);
    src.push_back(2);
    src.push_back(3);
    src.push_back(4);
    src.push_back(5);
    src.push_back(6);
    src.push_back(7);
    src.push_back(8);

    auto dst = from(src).where([](int a){return a%2 == 1;})
        .where([](int a){return a < 6;})
        .select([](int a){return a*2;})
        .reverse()
        .toVector();

    std::vector<int> ans;
    ans.push_back(10);
    ans.push_back(6);
    ans.push_back(2);

    EXPECT_EQ(ans,dst);
}

TEST(Linq, WhereOdd_Reverse_Reverse)
{
    std::vector<int> src;
    src.push_back(1);
    src.push_back(2);
    src.push_back(3);
    src.push_back(4);
    src.push_back(5);
    src.push_back(6);
    src.push_back(7);
    src.push_back(8);

    auto dst = from(src).where([](int a){return a%2 == 1;})
                        .reverse()
                        .where([](int a){return a < 4;})
                        .reverse()
                        .toVector();

    std::vector<int> ans;
    ans.push_back(1);
    ans.push_back(3);
    
    EXPECT_EQ(ans,dst);
}

//////////////////////////////////////////////////////////////////////////

TEST(Linq, Pointer_Front)
{
    int src[] = {1,2,3,4,5};

211
    auto dst = from<int>(static_cast<int *>(src), static_cast<int *>(src) + 5);
k06a's avatar
k06a committed
212 213 214

    for(int i = 1; i <= 5; i++)
    {
Anton Bukov's avatar
Anton Bukov committed
215
        EXPECT_EQ(i, dst.nextObject());
k06a's avatar
k06a committed
216 217
    }

Anton Bukov's avatar
Anton Bukov committed
218
    EXPECT_THROW(dst.nextObject(), EnumeratorEndException);
k06a's avatar
k06a committed
219 220 221 222 223 224 225 226 227 228 229 230 231
}


//////////////////////////////////////////////////////////////////////////

TEST(Linq, Array_Front)
{
    int src[] = {1,2,3,4,5};

    auto dst = from(src);

    for(int i = 1; i <= 5; i++)
    {
Anton Bukov's avatar
Anton Bukov committed
232
        EXPECT_EQ(i, dst.nextObject());
k06a's avatar
k06a committed
233 234
    }

Anton Bukov's avatar
Anton Bukov committed
235
    EXPECT_THROW(dst.nextObject(), EnumeratorEndException);
k06a's avatar
k06a committed
236 237 238 239 240 241 242 243 244 245 246 247 248
}

//////////////////////////////////////////////////////////////////////////

TEST(Linq, Creations)
{
    std::vector<int> vec;
    vec.push_back(1);
    vec.push_back(2);
    vec.push_back(3);
    vec.push_back(4);
    vec.push_back(5);
    int arr[] = {1,2,3,4,5};
Anton Bukov's avatar
Anton Bukov committed
249
    //const int carr[] = {1,2,3,4,5};
250
    int * ptr = static_cast<int *>(arr);
Anton Bukov's avatar
Anton Bukov committed
251
    //const int * cptr = const_cast<int *>(arr);
k06a's avatar
k06a committed
252 253 254

    auto dst_vec = from(vec);
    auto dst_arr = from(arr);
Anton Bukov's avatar
Anton Bukov committed
255
    //auto dst_carr = from(carr);
Anton Bukov's avatar
Anton Bukov committed
256
    auto dst_ptr = from<int>(ptr, ptr+5);
Anton Bukov's avatar
Anton Bukov committed
257
    //auto dst_cptr = from<const int>(cptr, cptr+5);
Anton Bukov's avatar
Anton Bukov committed
258
    auto dst_ptr_length = from<int>(ptr, 5);
Anton Bukov's avatar
Anton Bukov committed
259
    //auto dst_cptr_length = from<const int>(cptr, 5);
Anton Bukov's avatar
Anton Bukov committed
260
    auto dst_vec_iter = from<int>(vec.begin(), vec.end());
Anton Bukov's avatar
Anton Bukov committed
261
    //auto dst_vec_citer = from<const int>(vec.cbegin(), vec.cend());
k06a's avatar
k06a committed
262 263 264 265 266 267 268 269 270 271 272
}

//////////////////////////////////////////////////////////////////////////

TEST(Linq, MessagesCountUniqueContacts)
{
    struct Message
    {
        std::string PhoneA;
        std::string PhoneB;
        std::string Text;
Anton Bukov's avatar
Anton Bukov committed
273 274 275 276

        bool operator < (const Message & rhs) const
        {
            return (PhoneA < rhs.PhoneA)
277 278
                || ((PhoneA == rhs.PhoneA) && (PhoneB < rhs.PhoneB))
                || ((PhoneA == rhs.PhoneA) && (PhoneB == rhs.PhoneB) && (Text < rhs.Text));
Anton Bukov's avatar
Anton Bukov committed
279
        }
k06a's avatar
k06a committed
280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303
    };

    Message messages[] =
    {
        {"Anton","Denis","Hello, friend!"},
        {"Denis","Write","OLOLO"},
        {"Anton","Papay","WTF?"},
        {"Denis","Maloy","How r u?"},
        {"Denis","Write","Param-pareram!"},
    };

    int DenisUniqueContactCount = from(messages)
        .where(   [](const Message & msg){return msg.PhoneA == "Denis";})
        .distinct([](const Message & msg){return msg.PhoneB;})
        .count();

    EXPECT_EQ(2, DenisUniqueContactCount);
}

//////////////////////////////////////////////////////////////////////////

TEST(Linq, ForwardIterating)
{
    std::stringstream stream("0123456789");
Anton Bukov's avatar
Anton Bukov committed
304 305
    auto dst = from<char>(std::istream_iterator<char>(stream),
                          std::istream_iterator<char>())
k06a's avatar
k06a committed
306 307 308 309 310 311
               .where( [](char a){return a % 2 == 0;})
               .select([](char a){return std::string(1,a);})
               .sum();

    EXPECT_EQ("02468", dst);
}