fsfw/contrib/fsfw_contrib/etl-20.39.4/test/test_intrusive_stack.cpp

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

Embedded Template Library.
https://github.com/ETLCPP/etl
https://www.etlcpp.com

Copyright(c) 2016 John Wellbelove

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******************************************************************************/

#include "unit_test_framework.h"

#include "etl/intrusive_stack.h"
#include "etl/intrusive_links.h"

#include <vector>

namespace
{
  typedef etl::forward_link<0>       link0;
  typedef etl::bidirectional_link<1> link1;

  struct Data : public link0, public link1
  {
    Data(int i_)
      : i(i_)
    {

    }

    int i;
  };

  bool operator ==(const Data& lhs, const Data& rhs)
  {
    return lhs.i == rhs.i;
  }

  std::ostream& operator << (std::ostream& os, const Data& data)
  {
    os << data.i;
    return os;
  }

  std::vector<Data> data =
  {
    Data(1), Data(2), Data(3), Data(4), Data(5), Data(6), Data(7), Data(8)
  };

  SUITE(test_intrusive_stack)
  {
    //*************************************************************************
    TEST(test_constructor)
    {
      etl::intrusive_stack<Data, link0> stackD;
      etl::intrusive_stack<Data, link1> stackC;

      CHECK(stackD.empty());
      CHECK(stackC.empty());

      CHECK_EQUAL(0U, stackD.size());
      CHECK_EQUAL(0U, stackC.size());
    }

    //*************************************************************************
    TEST(test_empty)
    {
      Data data1(1);
      Data data2(2);

      etl::intrusive_stack<Data, link0> stackD;
      etl::intrusive_stack<Data, link1> stackC;

      CHECK(stackD.empty());
      CHECK(stackC.empty());

      stackD.push(data1);
      stackC.push(data2);

      CHECK(!stackD.empty());
      CHECK(!stackC.empty());
    }

    //*************************************************************************
    TEST(test_size)
    {
      Data data1(1);
      Data data2(2);
      Data data3(3);

      etl::intrusive_stack<Data, link0> stackD;
      etl::intrusive_stack<Data, link1> stackC;

      stackD.push(data1);
      stackD.push(data2);
      stackD.push(data3);

      stackC.push(data1);
      stackC.push(data2);

      CHECK_EQUAL(3U, stackD.size());
      CHECK_EQUAL(2U, stackC.size());
    }

    //*************************************************************************
    TEST(test_clear)
    {
      Data data1(1);
      Data data2(2);
      Data data3(3);

      etl::intrusive_stack<Data, link0> stackD;
      etl::intrusive_stack<Data, link1> stackC;

      stackD.push(data1);
      stackD.push(data2);
      stackD.push(data3);

      stackC.push(data1);
      stackC.push(data2);

      stackD.clear();

      CHECK_TRUE(stackD.empty());
      CHECK_FALSE(stackC.empty());

      CHECK_FALSE(etl::is_linked<link0>(data1));
      CHECK_FALSE(etl::is_linked<link0>(data2));
      CHECK_FALSE(etl::is_linked<link0>(data3));

      CHECK_TRUE(etl::is_linked<link1>(data1));
      CHECK_TRUE(etl::is_linked<link1>(data2));
      CHECK_FALSE(etl::is_linked<link1>(data3));

      stackC.clear();

      CHECK_FALSE(etl::is_linked<link0>(data1));
      CHECK_FALSE(etl::is_linked<link0>(data2));
      CHECK_FALSE(etl::is_linked<link0>(data3));

      CHECK_FALSE(etl::is_linked<link1>(data1));
      CHECK_FALSE(etl::is_linked<link1>(data2));
      CHECK_FALSE(etl::is_linked<link1>(data3));

      CHECK_TRUE(stackD.empty());
      CHECK_TRUE(stackC.empty());
    }

    //*************************************************************************
    TEST(test_push)
    {
      Data data1(1);
      Data data2(2);
      Data data3(3);

      etl::intrusive_stack<Data, link0> stackD;
      etl::intrusive_stack<Data, link1> stackC;

      stackD.push(data1);
      CHECK_EQUAL(stackD.top(), data1);

      stackD.push(data2);
      CHECK_EQUAL(stackD.top(), data2);

      stackD.push(data3);
      CHECK_EQUAL(stackD.top(), data3);

      stackC.push(data1);
      CHECK_EQUAL(stackC.top(), data1);

      stackC.push(data2);
      CHECK_EQUAL(stackC.top(), data2);
    }

    //*************************************************************************
    TEST(test_pop)
    {
      Data data1(1);
      Data data2(2);
      Data data3(3);

      etl::intrusive_stack<Data, link0> stackD;
      etl::intrusive_stack<Data, link1> stackC;

      stackD.push(data1);
      stackD.push(data2);
      stackD.push(data3);

      stackC.push(data1);
      stackC.push(data2);

      CHECK_EQUAL(stackD.top(), data3);
      stackD.pop();
      CHECK_EQUAL(stackD.top(), data2);
      stackD.pop();
      CHECK_EQUAL(stackD.top(), data1);
      stackD.pop();
      CHECK(stackD.empty());

      CHECK_EQUAL(stackC.top(), data2);
      stackC.pop();
      CHECK_EQUAL(stackC.top(), data1);
      stackC.pop();
      CHECK(stackC.empty());
    }

    //*************************************************************************
    TEST(test_pop_into)
    {
      Data data1(1);
      Data data2(2);
      Data data3(3);

      etl::intrusive_stack<Data, link0> stack1;
      etl::intrusive_stack<Data, link0> stack2;

      stack1.push(data1);
      stack1.push(data2);
      stack1.push(data3);

      stack1.pop_into(stack2);
      CHECK_EQUAL(2U, stack1.size());
      CHECK_EQUAL(data2, stack1.top());

      CHECK_EQUAL(1U, stack2.size());
      CHECK_EQUAL(data3, stack2.top());

      stack1.pop_into(stack2);
      CHECK_EQUAL(1U, stack1.size());
      CHECK_EQUAL(data1, stack1.top());

      CHECK_EQUAL(2U, stack2.size());
      CHECK_EQUAL(data2, stack2.top());

      stack1.pop_into(stack2);
      CHECK_EQUAL(0U, stack1.size());

      CHECK_EQUAL(3U, stack2.size());
      CHECK_EQUAL(data1, stack2.top());
    }

    //*************************************************************************
    TEST(test_top_const)
    {
      Data data1(1);
      Data data2(2);
      Data data3(3);

      etl::intrusive_stack<Data, link0> stackD;
      const etl::intrusive_stack<Data, link0>& stackDR = stackD;

      stackD.push(data1);
      stackD.push(data2);
      stackD.push(data3);

      CHECK_EQUAL(stackD.top(), stackDR.top());
      stackD.pop();
      CHECK_EQUAL(stackD.top(), stackDR.top());
      stackD.pop();
      CHECK_EQUAL(stackD.top(), stackDR.top());
    }

    //*************************************************************************
    TEST(test_reverse1)
    {
      Data data1(1);

      etl::intrusive_stack<Data, link0> stack;

      stack.push(data1);

      stack.reverse();

      CHECK_EQUAL(1U, stack.size());
      CHECK_EQUAL(stack.top(), data1);
    }

    //*************************************************************************
    TEST(test_reverse5)
    {
      Data data1(1);
      Data data2(2);
      Data data3(3);
      Data data4(4);
      Data data5(5);

      etl::intrusive_stack<Data, link0> stack;

      stack.push(data1);
      stack.push(data2);
      stack.push(data3);
      stack.push(data4);
      stack.push(data5);

      stack.reverse();

      CHECK_EQUAL(5U, stack.size());

      CHECK_EQUAL(stack.top(), data1);
      stack.pop();

      CHECK_EQUAL(stack.top(), data2);
      stack.pop();

      CHECK_EQUAL(stack.top(), data3);
      stack.pop();

      CHECK_EQUAL(stack.top(), data4);
      stack.pop();

      CHECK_EQUAL(stack.top(), data5);
    }
  };
}