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#include "fast.h"
#include <library/cpp/testing/unittest/registar.h>
Y_UNIT_TEST_SUITE(TTestFastRng) {
Y_UNIT_TEST(Test1) {
TFastRng32 rng1(17, 0);
TReallyFastRng32 rng2(17);
for (size_t i = 0; i < 1000; ++i) {
UNIT_ASSERT_VALUES_EQUAL(rng1.GenRand(), rng2.GenRand());
}
}
static ui64 R1[] = {
37,
43,
76,
17,
12,
87,
60,
4,
83,
47,
57,
81,
28,
45,
66,
74,
18,
17,
18,
75,
};
Y_UNIT_TEST(Test2) {
TFastRng64 rng(0, 1, 2, 3);
for (auto& i : R1) {
UNIT_ASSERT_VALUES_EQUAL(rng.Uniform(100u), i);
}
}
Y_UNIT_TEST(TestAdvance) {
TReallyFastRng32 rng1(17);
TReallyFastRng32 rng2(17);
for (size_t i = 0; i < 100; i++) {
rng1.GenRand();
}
rng2.Advance(100);
UNIT_ASSERT_VALUES_EQUAL(rng1.GenRand(), rng2.GenRand());
TFastRng64 rng3(0, 1, 2, 3);
TFastRng64 rng4(0, 1, 2, 3);
for (size_t i = 0; i < 100; i++) {
rng3.GenRand();
}
rng4.Advance(100);
UNIT_ASSERT_VALUES_EQUAL(rng3.GenRand(), rng4.GenRand());
}
Y_UNIT_TEST(TestAdvanceBoundaries) {
TReallyFastRng32 rng1(17);
TReallyFastRng32 rng2(17);
TReallyFastRng32 rng3(17);
rng2.Advance(0);
rng3.Advance(1);
UNIT_ASSERT_VALUES_EQUAL(rng1.GenRand(), rng2.GenRand());
UNIT_ASSERT_VALUES_EQUAL(rng1.GenRand(), rng3.GenRand());
}
Y_UNIT_TEST(TestCopy) {
TReallyFastRng32 r1(1);
TReallyFastRng32 r2(2);
UNIT_ASSERT_VALUES_UNEQUAL(r1.GenRand(), r2.GenRand());
r2 = r1;
UNIT_ASSERT_VALUES_EQUAL(r1.GenRand(), r2.GenRand());
}
Y_UNIT_TEST(Test3) {
TFastRng64 rng(17);
UNIT_ASSERT_VALUES_EQUAL(rng.GenRand(), ULL(14895365814383052362));
}
Y_UNIT_TEST(TestCompile) {
TFastRng<ui32> rng1(1);
TFastRng<ui64> rng2(2);
TFastRng<size_t> rng3(3);
rng1.GenRand();
rng2.GenRand();
rng3.GenRand();
}
const char* RNG_DATA = "At the top of the department store I,"
"I bought a fur coat with fur I"
"But apparently I made a blunder here -"
"Doha does not warm ... Absolutely.";
Y_UNIT_TEST(TestStreamCtor1) {
TMemoryInput mi(RNG_DATA, strlen(RNG_DATA));
TFastRng<ui32> rng(mi);
UNIT_ASSERT_VALUES_EQUAL(rng.GenRand(), 1449109131u);
}
Y_UNIT_TEST(TestStreamCtor2) {
TMemoryInput mi(RNG_DATA, strlen(RNG_DATA));
TFastRng<ui64> rng(mi);
UNIT_ASSERT_VALUES_EQUAL(rng.GenRand(), ULL(6223876579076085114));
}
}
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