etl/test/test_stack.cpp

/******************************************************************************
The MIT License(MIT)

Embedded Template Library.

Copyright(c) 2014 jwellbelove

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#include <UnitTest++/UnitTest++.h>

#include "../stack.h"

namespace
{		
  SUITE(TestStack)
  {
    //*************************************************************************
    TEST(Size)
    {
      etl::stack<int, 4> stack;

      stack.push(1);
      stack.push(2);
      stack.push(3);

      CHECK_EQUAL(3, stack.size());
    }

    //*************************************************************************
    TEST(Capacity)
    {
      etl::stack<int, 4> stack;

      CHECK_EQUAL(4, stack.capacity());
    }

    //*************************************************************************
    TEST(Clear)
    {
      etl::stack<int, 4> stack;

      stack.push(1);
      stack.push(2);
      stack.clear();
      CHECK_EQUAL(0, stack.size());
    }

    //*************************************************************************
    TEST(Empty)
    {
      etl::stack<int, 4> stack;

      CHECK(stack.empty());

      stack.push(1);

      CHECK(!stack.empty());
    }

    //*************************************************************************
    TEST(Full)
    {
      etl::stack<int, 4> stack;

      CHECK(!stack.full());

      stack.push(1);
      stack.push(2);
      stack.push(3);
      stack.push(4);

      CHECK(stack.full());
    }

    //*************************************************************************
    TEST(Push)
    {
      etl::stack<int, 4> stack;

      stack.push(1);
      CHECK_EQUAL(1, stack.size());

      stack.push(2);
      CHECK_EQUAL(2, stack.size());

      CHECK_EQUAL(2, stack.top());

      stack.pop();
      CHECK_EQUAL(1, stack.top());
    }

    //*************************************************************************
    TEST(PushVoid)
    {
      etl::stack<int, 4> stack;

      stack.push() = 1;
      CHECK_EQUAL(1, stack.size());

      stack.push() = 2;
      CHECK_EQUAL(2, stack.size());

      CHECK_EQUAL(2, stack.top());

      stack.pop();
      CHECK_EQUAL(1, stack.top());
    }

    //*************************************************************************
    TEST(PushExcess)
    {
      etl::stack<int, 4> stack;

      for (size_t i = 0; i < stack.capacity(); ++i)
      {
        stack.push(1);
      }

      CHECK_THROW(stack.push(1), etl::stack_full);
    }

    //*************************************************************************
    TEST(Pop)
    {
      etl::stack<int, 4> stack;

      stack.push(1);
      stack.push(2);
      stack.pop();
      CHECK_EQUAL(1, stack.size());
    }

    //*************************************************************************
    TEST(Top)
    {
      etl::stack<int, 4> stack;

      stack.push(1);
      stack.push(2);
      stack.push(3);

      CHECK_EQUAL(3, stack.top());

      stack.pop();
      CHECK_EQUAL(2, stack.top());

      stack.pop();
      CHECK_EQUAL(1, stack.top());
    }

    //*************************************************************************
    TEST(TopConst)
    {
      etl::stack<int, 4> stack;
      const etl::stack<int, 4>& constQueue = stack;

      stack.push(1);
      stack.push(2);
      stack.push(3);

      CHECK_EQUAL(3, constQueue.top());

      stack.pop();
      CHECK_EQUAL(2, constQueue.top());

      stack.pop();
      CHECK_EQUAL(1, constQueue.top());
    }

    //*************************************************************************
    TEST(TopException)
    {
      etl::stack<int, 4> stack;

      CHECK_THROW(stack.top(), etl::stack_empty);
    }

    //*************************************************************************
    TEST(CheckMultiplePush)
    {
      etl::stack<int, 4> stack;

      stack.push(1);
      stack.push(2);
      stack.push(3);

      bool pass = true;

      if (stack.top() != 3)
      {
        pass = false;
      }

      stack.pop();

      if (stack.top() != 2)
      {
        pass = false;
      }

      stack.pop();

      if (stack.top() != 1)
      {
        pass = false;
      }

      CHECK(pass);
    }

    //*************************************************************************
    TEST(CheckMultiplePushVoid)
    {
      etl::stack<int, 4> stack;

      stack.push() = 1;
      stack.push() = 2;
      stack.push() = 3;

      bool pass = true;

      if (stack.top() != 3)
      {
        pass = false;
      }

      stack.pop();

      if (stack.top() != 2)
      {
        pass = false;
      }

      stack.pop();

      if (stack.top() != 1)
      {
        pass = false;
      }

      CHECK(pass);
    }
  };
}