// stacktest.cpp: code to test sstack implementation

#include "sstack.h"
#include <string>
#include <iostream>
#include <cassert>

using namespace std;

void test_basic_operation() {
    StringStack stk;
    stk.push("work at library");
    stk.push("rest");
    stk.push("attend csc2210");
    stk.push("eat lunch");
    stk.push("go to lab");
    stk.push("eat breakfast");

    // check pops work
    assert(!stk.empty());
    assert(stk.pop() == "eat breakfast");
    assert(stk.pop() == "go to lab");
    assert(stk.pop() == "eat lunch");
    assert(stk.pop() == "attend csc2210");
    assert(stk.pop() == "rest");
    assert(stk.pop() == "work at library");
    assert(stk.empty());
}

void test_push_and_pop() {
    StringStack s;
    s.push("a");
    s.push("b");
    s.push("c");
    assert(s.pop() == "c");
    assert(s.pop() == "b");
    assert(s.pop() == "a");
    assert(s.empty());
    s.push("d");
    s.push("e");
    s.push("f");
    assert(!s.empty());
    assert(s.pop() == "f");
    assert(s.pop() == "e");
    s.push("g");
    assert(s.pop() == "g");
    assert(s.pop() == "d");
    assert(s.empty());
}

void test_clear() {
    StringStack s;
    s.push("one");
    assert(!s.empty());
    s.clear();
    assert(s.empty());
}

int main() {
    test_basic_operation();
    test_push_and_pop();
    test_clear();
    cout << "All tests pass." << endl;
    return 0;
}