dynliststack.cc

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/*
                          Aleph_w
 
  Data structures & Algorithms
  version 2.0.0b
  https://github.com/lrleon/Aleph-w
 
  This file is part of Aleph-w library
 
  Copyright (c) 2002-2026 Leandro Rabindranath Leon
 
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
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  copies of the Software, and to permit persons to whom the Software is
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  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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*/
 
 
 
 
# include <gtest/gtest.h>
 
# include <tpl_dynListStack.H>
 
using namespace std;
using namespace testing;
using namespace Aleph;
 
constexpr size_t N = 17;
 
struct SimpleStack : public Test
{
  size_t n = 0;
  DynListStack<int> s;
  SimpleStack()
  {
    for (size_t i = 0; i < N; ++i, ++n)
      s.push(i);
  }
};
 
struct ComplexStack : public Test
{
  size_t n = 0;
  DynListStack<DynList<int>> s;
  ComplexStack()
  {
    for (size_t i = 0; i < N; ++i, ++n)
      s.push({ int(i), 0, 1, 2, int(i) });
  }
};
 
TEST(DynListStack, empty_stack)
{
  DynListStack<int> s;
  EXPECT_TRUE(s.is_empty());
  EXPECT_EQ(s.size(), 0);
  EXPECT_THROW(s.top(), underflow_error);
}
 
TEST_F(SimpleStack, push_pop)
{
  EXPECT_FALSE(s.is_empty());
  EXPECT_EQ(s.size(), n);
  EXPECT_EQ(s.top(), n - 1);
 
  const size_t m = 100;
  for (size_t i = 0; i < m; ++i)
    ASSERT_EQ(s.push(i), i);
  EXPECT_EQ(s.size(), n + m);
 
  for (size_t i = 0; i < m; ++i)
    ASSERT_EQ(s.pop(), m - i - 1);
 
  EXPECT_EQ(s.size(), n);
 
  for (size_t i = 0; i < m; ++i)
    ASSERT_EQ(s.push(i), i);
  EXPECT_EQ(s.size(), n + m);
 
  for (size_t i = 0; i < m; ++i)
    ASSERT_EQ(s.pop(), m - i - 1);
  EXPECT_FALSE(s.is_empty());
  EXPECT_EQ(s.size(), n);
 
  s.empty();
  EXPECT_TRUE(s.is_empty());
  EXPECT_EQ(s.size(), 0);
}
 
TEST_F(ComplexStack, push_pop)
{
  EXPECT_FALSE(s.is_empty());
  EXPECT_EQ(s.size(), n);
  EXPECT_EQ(s.top().get_first(), n - 1);
 
  const size_t m = 100;
  for (size_t i = 0; i < m; ++i)
    {
      ASSERT_EQ(s.push({int(i), 0, 1, int(i)}).get_first(), i);
      ASSERT_EQ(s.top().get_first(), i);
      ASSERT_EQ(s.top().get_last(), i);
      ASSERT_EQ(s.top().nth(1), 0);
      ASSERT_EQ(s.top().nth(2), 1);
    }
  EXPECT_EQ(s.size(), n + m);
 
  for (size_t i = 0; i < m; ++i)
    {
      auto l = s.pop();
      ASSERT_EQ(l.get_first(), m - i - 1);      
      ASSERT_EQ(l.get_last(), m - i - 1);
      ASSERT_EQ(l.nth(1), 0);
      ASSERT_EQ(l.nth(2), 1);
    }
 
  EXPECT_EQ(s.size(), n);
 
  for (size_t i = 0; i < m; ++i)
    {
      auto & l = s.push({ int(i), 0, 1, int(i) });
      ASSERT_EQ(l.get_first(), i);
      ASSERT_EQ(l.get_last(), i);
      ASSERT_EQ(l.nth(1), 0);
      ASSERT_EQ(l.nth(2), 1);
    }
  EXPECT_EQ(s.size(), n + m);
 
  for (size_t i = 0; i < m; ++i)
    {
      auto l = s.pop();
      ASSERT_EQ(l.get_first(), m - i - 1);
      ASSERT_EQ(l.get_last(), m - i - 1);
      ASSERT_EQ(l.nth(1), 0);
      ASSERT_EQ(l.nth(2), 1);
    }
  EXPECT_EQ(s.size(), n);
  
  for (size_t i = 0; i < n; ++i)
    {
      auto l = s.pop();
      ASSERT_EQ(l.get_first(), n - i - 1);
      ASSERT_EQ(l.get_last(), n - i - 1);
      ASSERT_EQ(l.nth(1), 0);
      ASSERT_EQ(l.nth(2), 1);
    }
  EXPECT_TRUE(s.is_empty());
  EXPECT_EQ(s.size(), 0);
 
  EXPECT_TRUE(s.is_empty());
  EXPECT_EQ(s.size(), 0);
 
  for (size_t i = 0; i < m; ++i)
    {
      auto & l = s.push({ int(i), 0, 1, int(i) });
      ASSERT_EQ(l.get_first(), i);
      ASSERT_EQ(l.get_last(), i);
      ASSERT_EQ(l.nth(1), 0);
      ASSERT_EQ(l.nth(2), 1);
    }
  EXPECT_EQ(s.size(), m);
 
  s.empty();
  EXPECT_TRUE(s.is_empty());
  EXPECT_EQ(s.size(), 0);
}
 
TEST(DynListStack, Iterator_on_empty_stack)
{
  DynListStack<int> s;
  auto it = s.get_it();
  EXPECT_FALSE(it.has_curr());
  EXPECT_THROW(it.get_curr(), overflow_error);
  EXPECT_THROW(it.next(), overflow_error);
}
 
TEST_F(SimpleStack, Iterator)
{
  auto it = s.get_it(); 
  for (size_t i = 0; it.has_curr(); it.next(), ++i)
    ASSERT_EQ(it.get_curr(), n - i - 1);
}
 
TEST_F(ComplexStack, Iterator)
{
  auto it = s.get_it(); 
  for (size_t i = 0; it.has_curr(); it.next(), ++i)
    {
      ASSERT_EQ(it.get_curr().get_first(), n - i -1);
      ASSERT_EQ(it.get_curr().get_last(), n - i - 1);
      ASSERT_EQ(it.get_curr().nth(1), 0);
      ASSERT_EQ(it.get_curr().nth(2), 1);
    }
}
 
TEST_F(SimpleStack, copy_operations)
{
  { // test copy ctor
    DynListStack<int> sc = s;
    EXPECT_FALSE(sc.is_empty());
    EXPECT_EQ(sc.size(), n);
    EXPECT_EQ(s.size(), sc.size());
    int i = 0;
    for (; i < n; ++i)
      ASSERT_EQ(sc.pop(), n - i - 1);
    EXPECT_EQ(i, n);
  }
  
  { // test copy assignment 
    DynListStack<int> sc;
    sc = s;
    EXPECT_FALSE(sc.is_empty());
    EXPECT_EQ(s.size(), sc.size());
    int i = 0;
    for (; i < n; ++i)
      ASSERT_EQ(sc.pop(), n - i - 1);
    EXPECT_EQ(i, s.size());
  }
 
  // test move ctor
  DynListStack<int> sc(move(s));
  EXPECT_FALSE(sc.is_empty());
  EXPECT_EQ(sc.size(), n);
  EXPECT_EQ(s.size(), 0);
  EXPECT_TRUE(s.is_empty());
  int i = 0;
  for (; i < n; ++i)
    {
      s.push(sc.pop());
      ASSERT_EQ(s.top(), n - i - 1);
    }
  EXPECT_EQ(i, n);
  EXPECT_EQ(s.size(), n);
  EXPECT_TRUE(sc.is_empty());
 
  sc = move(s);
  EXPECT_FALSE(sc.is_empty());
  EXPECT_EQ(sc.size(), n);
  EXPECT_TRUE(s.is_empty());
  i = 0;
  for (; i < n; ++i)
    {
      s.push(sc.pop());
      ASSERT_EQ(s.top(), i);
    }
  EXPECT_EQ(i, n);
  EXPECT_EQ(s.size(), n);
  EXPECT_TRUE(sc.is_empty());
}
 
TEST_F(ComplexStack, copy_operations)
{
  { // test copy ctor
    DynListStack<DynList<int>> sc = s;
    ASSERT_FALSE(sc.is_empty());
    ASSERT_EQ(s.size(), sc.size());
    ASSERT_TRUE(eq(s.top(), sc.top()));
  }
  
  { // test copy assignment 
    DynListStack<DynList<int>> sc;
    sc = s;
    ASSERT_FALSE(sc.is_empty());
    ASSERT_EQ(s.size(), sc.size());
    ASSERT_TRUE(eq(s.top(), sc.top()));
  }
 
  // test move ctor
  DynListStack<DynList<int>> sc(move(s));
  EXPECT_FALSE(sc.is_empty());
  EXPECT_EQ(sc.size(), n);
  EXPECT_EQ(s.size(), 0);
  EXPECT_TRUE(s.is_empty());
 
  EXPECT_EQ(sc.top().get_first(), n - 1);
  EXPECT_EQ(sc.top().get_last(), n - 1);
  EXPECT_EQ(sc.top().nth(1), 0);
  EXPECT_EQ(sc.top().nth(2), 1);
 
  s = move(sc);
  EXPECT_FALSE(s.is_empty());
  EXPECT_EQ(s.size(), n);
  EXPECT_TRUE(sc.is_empty());
 
  EXPECT_EQ(s.top().get_first(), n - 1);
  EXPECT_EQ(s.top().get_last(), n - 1);
  EXPECT_EQ(s.top().nth(1), 0);
  EXPECT_EQ(s.top().nth(2), 1);
}
 
TEST_F(SimpleStack, traverse)
{
  size_t i = 0;
  bool ret = s.traverse([&i, N = n] (int k) { return (k == N - i++ - 1); });
  EXPECT_TRUE(ret);
  EXPECT_EQ(i, n);
}
 
TEST_F(ComplexStack, traverse)
{
  int i = 0;
  auto ret = s.traverse([&i, N = n] (const DynList<int> & l)
      {
        return l.get_first() == N - i - 1 and
        l.get_last() == N - i++ - 1 and
        l.nth(1) == 0 and l.nth(2) == 1;
      });
  EXPECT_TRUE(ret);
  EXPECT_EQ(i, n);
}