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45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
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#include "test.h"
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#include <gtest/gtest.h>
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#include <game/prng.h>
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// From https://www.mscs.dal.ca/~selinger/random/, 2020-05-25
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static const int NUM_RANDOM_INTEGERS = 60;
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static const int GLIBC_SEED_1_RANDOM_INTEGERS[NUM_RANDOM_INTEGERS] = {
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1804289383, 846930886, 1681692777, 1714636915, 1957747793,
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424238335, 719885386, 1649760492, 596516649, 1189641421,
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1025202362, 1350490027, 783368690, 1102520059, 2044897763,
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1967513926, 1365180540, 1540383426, 304089172, 1303455736,
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35005211, 521595368, 294702567, 1726956429, 336465782,
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861021530, 278722862, 233665123, 2145174067, 468703135,
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1101513929, 1801979802, 1315634022, 635723058, 1369133069,
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1125898167, 1059961393, 2089018456, 628175011, 1656478042,
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1131176229, 1653377373, 859484421, 1914544919, 608413784,
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756898537, 1734575198, 1973594324, 149798315, 2038664370,
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1129566413, 184803526, 412776091, 1424268980, 1911759956,
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749241873, 137806862, 42999170, 982906996, 135497281,
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};
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TEST(Prng, EqualsGlibc)
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{
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const int *EXPECTED = GLIBC_SEED_1_RANDOM_INTEGERS;
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CPrng Prng;
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Prng.Seed(1);
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for(int i = 0; i < NUM_RANDOM_INTEGERS; i++)
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{
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EXPECT_EQ(Prng.RandomInt(), EXPECTED[i]);
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}
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}
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TEST(Prng, Description)
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{
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CPrng Prng;
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EXPECT_STREQ(Prng.Description(), "glibc-rand-emu:unseeded");
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Prng.Seed(0x01234567);
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EXPECT_STREQ(Prng.Description(), "glibc-rand-emu:01234567");
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Prng.Seed(0xfedbca98);
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EXPECT_STREQ(Prng.Description(), "glibc-rand-emu:fedbca98");
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}
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