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#include "random.h"
#include <library/cpp/testing/unittest/registar.h>
#include <util/generic/ylimits.h>
template <class T>
static inline void AssertRange(T v, T r1, T r2) {
UNIT_ASSERT(v >= r1);
UNIT_ASSERT(v < r2);
}
Y_UNIT_TEST_SUITE(TRandomNumberTest) {
template <typename T>
void TestAll(T n) {
for (T i = 0; i < n; ++i) {
while (RandomNumber<T>(n) != i) {
}
}
}
template <typename T>
void TestSome(T n) {
for (int i = 0; i < 100; ++i) {
UNIT_ASSERT(RandomNumber<T>(n) < n);
}
}
template <typename T>
void TestType() {
TestAll<T>(1);
TestAll<T>(2);
TestAll<T>(3);
TestAll<T>(4);
TestAll<T>(5);
TestAll<T>(6);
TestAll<T>(9);
TestAll<T>(15);
TestAll<T>(16);
TestSome<T>(Max<T>());
TestSome<T>(Max<T>() - 1);
TestSome<T>(Max<T>() - 2);
TestSome<T>(Max<T>() - 3);
TestSome<T>(Max<T>() - 4);
TestSome<T>(Max<T>() - 5);
TestSome<T>(Max<T>() - 7);
TestSome<T>(Max<T>() - 8);
TestSome<T>(Max<T>() - 2222);
TestSome<T>(Max<T>() - 22222);
}
Y_UNIT_TEST(TestWithLimit) {
TestType<unsigned short>();
TestType<unsigned int>();
TestType<unsigned long>();
TestType<unsigned long long>();
}
Y_UNIT_TEST(TestRandomNumberFloat) {
for (size_t i = 0; i < 1000; ++i) {
AssertRange<float>(RandomNumber<float>(), 0.0, 1.0);
}
}
Y_UNIT_TEST(TestRandomNumberDouble) {
for (size_t i = 0; i < 1000; ++i) {
AssertRange<double>(RandomNumber<double>(), 0.0, 1.0);
}
}
Y_UNIT_TEST(TestRandomNumberLongDouble) {
for (size_t i = 0; i < 1000; ++i) {
AssertRange<long double>(RandomNumber<long double>(), 0.0, 1.0);
}
}
Y_UNIT_TEST(TestBoolean) {
while (RandomNumber<bool>()) {
}
while (!RandomNumber<bool>()) {
}
}
Y_UNIT_TEST(TestResetSeed) {
SetRandomSeed(42);
for (const ui32 el : {
102,
179,
92,
14,
106,
71,
188,
20,
102,
121,
210,
214,
74,
202,
87,
116,
99,
103,
151,
130,
149,
52,
1,
87,
235,
157,
37,
129,
191,
187,
20,
160,
203,
57,
21,
252,
235,
88,
48,
218,
58,
254,
169,
255,
219,
187,
207,
14,
189,
189,
174,
189,
50,
107,
54,
243,
63,
248,
130,
228,
50,
134,
20,
72,
}) {
UNIT_ASSERT_EQUAL(RandomNumber<ui32>(1 << 8), el);
}
}
}
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