#include "catch.hpp"
#include "CircularFifo.h"
#include <vector>

TEST_CASE("Empty buffer"){
    CircularFifo<char> fifo(0);

    //Since the fifo can hold zero elements
    //its both empty and full
    CHECK(fifo.isEmpty()== true);
    CHECK(fifo.isFull()== true);


    //push fails
    char* c = new char;
    *c = 'h';
    CHECK(fifo.push(c, true) == false);

    //pop fails
    CHECK(fifo.pop(c, true) == false);

    delete c;

}

TEST_CASE("Push pop"){
    CircularFifo<int> fifo(5);

    std::vector<int> vec{3,7,12,3,4};
    int* p = &vec[0];

    for(size_t i =0; i!=vec.size(); ++i){
        fifo.push(p);
        ++p;
        CHECK(fifo.getDataValue() == i+1);
        CHECK(fifo.getFreeValue() == 4-i);
    }
    
    CHECK(fifo.isEmpty()== false);
    CHECK(fifo.isFull()== true);

    for(size_t i = 0; i!= vec.size(); ++i){
        fifo.pop(p);
        CHECK(*p == vec[i]);
        CHECK(fifo.getDataValue() == 4-i);
        CHECK(fifo.getFreeValue() == i+1);
    }

    CHECK(fifo.isEmpty()== true);
    CHECK(fifo.isFull()== false);

}