#include "utils.h"

#include <catch2/catch.hpp>

#include "faasm/random.h"

using namespace faasm;

namespace tests {

TEST_CASE("Test random integer", "[random]")

{

// Slightly sketch to be testing a random number like this but probably a

// necessary evil.

int topEnd = 1000;

int a = randomInteger(10, topEnd);

int b = randomInteger(30, topEnd);

int c = randomInteger(100, topEnd);

REQUIRE(a >= 10);

REQUIRE(a <= topEnd);

REQUIRE(b >= 30);

REQUIRE(b <= topEnd);

REQUIRE(c >= 100);

REQUIRE(c <= topEnd);

bool allUnequal = (a != b) & (b != c);

REQUIRE(allUnequal);

}

TEST_CASE("Test array shuffling", "[random]")

{

std::vector<int> arrayIn = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

std::vector<int> arrayInCopy = arrayIn;

shuffleArray(arrayIn.data(), arrayIn.size());

REQUIRE(arrayIn != arrayInCopy);

}

TEST_CASE("Test random int range", "[random]")

{

int* actual = randomIntRange(20);

// Check all integers are present

std::vector<int> actualVec(actual, actual + 20);

for (int i = 0; i < 20; i++) {

bool isPresent =

std::find(actualVec.begin(), actualVec.end(), i) != actualVec.end();

REQUIRE(isPresent);

}

}

}