Echo Writes Code

test_memory.cpp

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#include "crucible/core.hpp"
#include "crucible/test.hpp"

#include <cstddef>

namespace crucible
{
  constexpr auto immutable_view_is_constexpr() -> bool
  {
    int const sample_data[] { 1, 2, 3 };
    auto const view { make_immutable_view(sample_data) };
    return view == sample_data;
  }

  static_assert(immutable_view_is_constexpr());

  constexpr auto mutable_view_is_constexpr() -> bool
  {
    int sample_data[] { 1, 2, 3, };
    auto view { make_mutable_view(sample_data) };
    view[1] = 5;
    return sample_data[1] == 5;
  }

  static_assert(mutable_view_is_constexpr());

  constexpr auto heap_buffer_is_constexpr() -> bool
  {
    heap_buffer<int> array;
    array.push(1);
    array.push(2);
    array.push(3);

    int expected_data[] { 1, 2, 3 };
    return array == expected_data;
  }

  static_assert(heap_buffer_is_constexpr());

  CRUCIBLE_TEST_SCENARIO(immutable_view_is_empty)
  {
    auto const immutable_view { make_immutable_view<std::byte>(nullptr, 0) };
    CRUCIBLE_ASSERT(immutable_view.is_empty());
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_take_first)
  {
    int const sample_data[] { 1, 2, 3 };

    auto const s1 { make_immutable_view(sample_data) };
    auto const s2 { s1.take_first(2) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 2);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[0]);
    CRUCIBLE_ASSERT_EQ(s2[1], sample_data[1]);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_take_first_at_most)
  {
    int const sample_data[] { 1, 2, 3 };
    auto const s1 { make_immutable_view(sample_data) };

    auto const s2 { s1.take_first_at_most(2) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 2);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[0]);
    CRUCIBLE_ASSERT_EQ(s2[1], sample_data[1]);

    auto const s3 { s1.take_first_at_most(3) };
    CRUCIBLE_ASSERT_EQ(s3.size(), 3);
    CRUCIBLE_ASSERT_EQ(s3[0], sample_data[0]);
    CRUCIBLE_ASSERT_EQ(s3[1], sample_data[1]);
    CRUCIBLE_ASSERT_EQ(s3[2], sample_data[2]);

    auto const s4 { s1.take_first_at_most(1000) };
    CRUCIBLE_ASSERT_EQ(s4.size(), 3);
    CRUCIBLE_ASSERT_EQ(s4[0], sample_data[0]);
    CRUCIBLE_ASSERT_EQ(s4[1], sample_data[1]);
    CRUCIBLE_ASSERT_EQ(s4[2], sample_data[2]);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_take_last)
  {
    int const sample_data[] { 1, 2, 3 };

    auto const s1 { make_immutable_view(sample_data) };
    auto const s2 { s1.take_last(2) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 2);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[1]);
    CRUCIBLE_ASSERT_EQ(s2[1], sample_data[2]);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_take_from)
  {
    int const sample_data[] { 1, 2, 3 };

    auto const s1 { make_immutable_view(sample_data) };
    auto const s2 { s1.take_from(1) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 2);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[1]);
    CRUCIBLE_ASSERT_EQ(s2[1], sample_data[2]);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_take_to)
  {
    int const sample_data[] { 1, 2, 3 };

    auto const s1 { make_immutable_view(sample_data) };
    auto const s2 { s1.take_to(1) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 1);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[0]);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_iterate)
  {
    int const sample_data[] { 1, 2, 3 };
    auto const immutable_view { make_immutable_view(sample_data) };
    auto iterator { immutable_view.iterate() };

    auto next_element { iterator.advance() };
    CRUCIBLE_ASSERT(next_element.has_value());
    CRUCIBLE_ASSERT_EQ(next_element.value(), 1);

    next_element = iterator.advance();
    CRUCIBLE_ASSERT(next_element.has_value());
    CRUCIBLE_ASSERT_EQ(next_element.value(), 2);

    next_element = iterator.advance();
    CRUCIBLE_ASSERT(next_element.has_value());
    CRUCIBLE_ASSERT_EQ(next_element.value(), 3);

    next_element = iterator.advance();
    CRUCIBLE_ASSERT(!next_element.has_value());
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_is_empty)
  {
    auto const mutable_view { make_mutable_view<std::byte>(nullptr, 0) };
    CRUCIBLE_ASSERT(mutable_view.is_empty());
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_take_first)
  {
    int sample_data[] { 1, 2, 3 };

    auto s1 { make_mutable_view(sample_data) };
    auto s2 { s1.take_first(2) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 2);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[0]);
    CRUCIBLE_ASSERT_EQ(s2[1], sample_data[1]);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_take_first_at_most)
  {
    int sample_data[] { 1, 2, 3 };
    auto const s1 { make_mutable_view(sample_data) };

    auto const s2 { s1.take_first_at_most(2) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 2);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[0]);
    CRUCIBLE_ASSERT_EQ(s2[1], sample_data[1]);

    auto const s3 { s1.take_first_at_most(3) };
    CRUCIBLE_ASSERT_EQ(s3.size(), 3);
    CRUCIBLE_ASSERT_EQ(s3[0], sample_data[0]);
    CRUCIBLE_ASSERT_EQ(s3[1], sample_data[1]);
    CRUCIBLE_ASSERT_EQ(s3[2], sample_data[2]);

    auto const s4 { s1.take_first_at_most(1000) };
    CRUCIBLE_ASSERT_EQ(s4.size(), 3);
    CRUCIBLE_ASSERT_EQ(s4[0], sample_data[0]);
    CRUCIBLE_ASSERT_EQ(s4[1], sample_data[1]);
    CRUCIBLE_ASSERT_EQ(s4[2], sample_data[2]);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_take_last)
  {
    int sample_data[] { 1, 2, 3 };

    auto s1 { make_mutable_view(sample_data) };
    auto s2 { s1.take_last(2) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 2);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[1]);
    CRUCIBLE_ASSERT_EQ(s2[1], sample_data[2]);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_take_from)
  {
    int sample_data[] { 1, 2, 3 };

    auto s1 { make_mutable_view(sample_data) };
    auto s2 { s1.take_from(1) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 2);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[1]);
    CRUCIBLE_ASSERT_EQ(s2[1], sample_data[2]);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_take_to)
  {
    int sample_data[] { 1, 2, 3 };

    auto s1 { make_mutable_view(sample_data) };
    auto s2 { s1.take_to(1) };
    CRUCIBLE_ASSERT_EQ(s2.size(), 1);
    CRUCIBLE_ASSERT_EQ(s2[0], sample_data[0]);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_iterate)
  {
    int sample_data[] { 1, 2, 3 };
    auto const mutable_view { make_mutable_view(sample_data) };
    auto iterator { mutable_view.iterate() };

    auto next_element { iterator.advance() };
    CRUCIBLE_ASSERT(next_element.has_value());
    CRUCIBLE_ASSERT_EQ(next_element.value(), 1);

    next_element = iterator.advance();
    CRUCIBLE_ASSERT(next_element.has_value());
    CRUCIBLE_ASSERT_EQ(next_element.value(), 2);

    next_element = iterator.advance();
    CRUCIBLE_ASSERT(next_element.has_value());
    CRUCIBLE_ASSERT_EQ(next_element.value(), 3);

    next_element = iterator.advance();
    CRUCIBLE_ASSERT(!next_element.has_value());
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_concatenate_with_lvalue)
  {
    auto const lhs { make_heap_buffer<int>({ 0, 1, 2 }) };
    auto const rhs { make_heap_buffer<int>({ 3, 4, 5 }) };

    auto buffer { lhs };
    buffer += rhs;

    CRUCIBLE_ASSERT_EQ(buffer.size(), 6);
    CRUCIBLE_ASSERT_EQ(buffer[0], 0);
    CRUCIBLE_ASSERT_EQ(buffer[1], 1);
    CRUCIBLE_ASSERT_EQ(buffer[2], 2);
    CRUCIBLE_ASSERT_EQ(buffer[3], 3);
    CRUCIBLE_ASSERT_EQ(buffer[4], 4);
    CRUCIBLE_ASSERT_EQ(buffer[5], 5);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_concatenate_with_lvalue_self)
  {
    auto buffer { make_heap_buffer<int>({ 0, 1, 2 }) };
    buffer += buffer;

    CRUCIBLE_ASSERT_EQ(buffer.size(), 6);
    CRUCIBLE_ASSERT_EQ(buffer[0], 0);
    CRUCIBLE_ASSERT_EQ(buffer[1], 1);
    CRUCIBLE_ASSERT_EQ(buffer[2], 2);
    CRUCIBLE_ASSERT_EQ(buffer[3], 0);
    CRUCIBLE_ASSERT_EQ(buffer[4], 1);
    CRUCIBLE_ASSERT_EQ(buffer[5], 2);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_concatenate_with_rvalue)
  {
    auto const lhs { make_heap_buffer<int>({ 0, 1, 2 }) };
    auto rhs { make_heap_buffer<int>({ 3, 4, 5 }) };

    auto buffer { lhs };
    buffer += std::move(rhs);

    CRUCIBLE_ASSERT_EQ(buffer.size(), 6);
    CRUCIBLE_ASSERT_EQ(buffer[0], 0);
    CRUCIBLE_ASSERT_EQ(buffer[1], 1);
    CRUCIBLE_ASSERT_EQ(buffer[2], 2);
    CRUCIBLE_ASSERT_EQ(buffer[3], 3);
    CRUCIBLE_ASSERT_EQ(buffer[4], 4);
    CRUCIBLE_ASSERT_EQ(buffer[5], 5);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_concatenate_with_immutable_view)
  {
    int const rhs_data[] { 3, 4, 5 };

    auto const lhs { make_heap_buffer<int>({ 0, 1, 2 }) };
    auto rhs { make_immutable_view(rhs_data) };

    auto buffer { lhs };
    buffer += rhs;

    CRUCIBLE_ASSERT_EQ(buffer.size(), 6);
    CRUCIBLE_ASSERT_EQ(buffer[0], 0);
    CRUCIBLE_ASSERT_EQ(buffer[1], 1);
    CRUCIBLE_ASSERT_EQ(buffer[2], 2);
    CRUCIBLE_ASSERT_EQ(buffer[3], 3);
    CRUCIBLE_ASSERT_EQ(buffer[4], 4);
    CRUCIBLE_ASSERT_EQ(buffer[5], 5);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_concatenate_with_immutable_view_on_self)
  {
    auto const lhs { make_heap_buffer<int>({ 0, 1, 2 }) };
    auto rhs { lhs.view().take_from(1) };

    auto buffer { lhs };
    buffer += rhs;

    CRUCIBLE_ASSERT_EQ(buffer.size(), 5);
    CRUCIBLE_ASSERT_EQ(buffer[0], 0);
    CRUCIBLE_ASSERT_EQ(buffer[1], 1);
    CRUCIBLE_ASSERT_EQ(buffer[2], 2);
    CRUCIBLE_ASSERT_EQ(buffer[3], 1);
    CRUCIBLE_ASSERT_EQ(buffer[4], 2);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_concatenate_lvalue_lvalue)
  {
    auto const lhs { make_heap_buffer<int>({ 0, 1, 2 }) };
    auto const rhs { make_heap_buffer<int>({ 3, 4, 5 }) };
    auto const buffer { lhs + rhs };

    CRUCIBLE_ASSERT_EQ(buffer.size(), 6);
    CRUCIBLE_ASSERT_EQ(buffer[0], 0);
    CRUCIBLE_ASSERT_EQ(buffer[1], 1);
    CRUCIBLE_ASSERT_EQ(buffer[2], 2);
    CRUCIBLE_ASSERT_EQ(buffer[3], 3);
    CRUCIBLE_ASSERT_EQ(buffer[4], 4);
    CRUCIBLE_ASSERT_EQ(buffer[5], 5);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_concatenate_rvalue_rvalue)
  {
    auto lhs { make_heap_buffer<int>({ 0, 1, 2 }) };
    auto rhs { make_heap_buffer<int>({ 3, 4, 5 }) };
    auto const buffer { std::move(lhs) + std::move(rhs) };

    CRUCIBLE_ASSERT_EQ(buffer.size(), 6);
    CRUCIBLE_ASSERT_EQ(buffer[0], 0);
    CRUCIBLE_ASSERT_EQ(buffer[1], 1);
    CRUCIBLE_ASSERT_EQ(buffer[2], 2);
    CRUCIBLE_ASSERT_EQ(buffer[3], 3);
    CRUCIBLE_ASSERT_EQ(buffer[4], 4);
    CRUCIBLE_ASSERT_EQ(buffer[5], 5);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_concatenate_lvalue_rvalue)
  {
    auto const lhs { make_heap_buffer<int>({ 0, 1, 2 }) };
    auto rhs { make_heap_buffer<int>({ 3, 4, 5 }) };
    auto const buffer { lhs + std::move(rhs) };

    CRUCIBLE_ASSERT_EQ(buffer.size(), 6);
    CRUCIBLE_ASSERT_EQ(buffer[0], 0);
    CRUCIBLE_ASSERT_EQ(buffer[1], 1);
    CRUCIBLE_ASSERT_EQ(buffer[2], 2);
    CRUCIBLE_ASSERT_EQ(buffer[3], 3);
    CRUCIBLE_ASSERT_EQ(buffer[4], 4);
    CRUCIBLE_ASSERT_EQ(buffer[5], 5);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_concatenate_rvalue_lvalue)
  {
    auto lhs { make_heap_buffer<int>({ 0, 1, 2 }) };
    auto const rhs { make_heap_buffer<int>({ 3, 4, 5 }) };
    auto const buffer { std::move(lhs) + rhs };

    CRUCIBLE_ASSERT_EQ(buffer.size(), 6);
    CRUCIBLE_ASSERT_EQ(buffer[0], 0);
    CRUCIBLE_ASSERT_EQ(buffer[1], 1);
    CRUCIBLE_ASSERT_EQ(buffer[2], 2);
    CRUCIBLE_ASSERT_EQ(buffer[3], 3);
    CRUCIBLE_ASSERT_EQ(buffer[4], 4);
    CRUCIBLE_ASSERT_EQ(buffer[5], 5);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_immutable_view)
  {
    auto const array { make_heap_buffer<int>({ 1, 2, 3 }) };
    int const expected_data[] { 1, 2, 3 };

    CRUCIBLE_ASSERT_EQ(array.view(), expected_data);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_mutable_view)
  {
    auto array { make_heap_buffer<int>({ 1, 2, 3 }) };
    int const expected_data[] { 1, 2, 3 };

    CRUCIBLE_ASSERT_EQ(array.view(), expected_data);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_iterate)
  {
    auto const array { make_heap_buffer<int>({ 1, 2, 3 }) };
    auto iterator { array.iterate() };

    auto next_element { iterator.advance() };
    CRUCIBLE_ASSERT(next_element.has_value());
    CRUCIBLE_ASSERT_EQ(next_element.value(), 1);

    next_element = iterator.advance();
    CRUCIBLE_ASSERT(next_element.has_value());
    CRUCIBLE_ASSERT_EQ(next_element.value(), 2);

    next_element = iterator.advance();
    CRUCIBLE_ASSERT(next_element.has_value());
    CRUCIBLE_ASSERT_EQ(next_element.value(), 3);

    next_element = iterator.advance();
    CRUCIBLE_ASSERT(!next_element.has_value());
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_push)
  {
    {
      heap_buffer<int> array {};
      array.push(4);

      CRUCIBLE_ASSERT_EQ(array.size(), 1);
      CRUCIBLE_ASSERT_EQ(array[0], 4);
    }

    {
      auto array { make_heap_buffer<int>({ 1, 2, 3 }) };
      array.push(4);

      CRUCIBLE_ASSERT_EQ(array.size(), 4);
      CRUCIBLE_ASSERT_EQ(array[0], 1);
      CRUCIBLE_ASSERT_EQ(array[1], 2);
      CRUCIBLE_ASSERT_EQ(array[2], 3);
      CRUCIBLE_ASSERT_EQ(array[3], 4);
    }
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_eq_immutable_view)
  {
    int const sample_data[] { 1, 2, 3 };

    auto const s1 { make_immutable_view(sample_data) };
    auto const s2 { make_immutable_view(sample_data) };

    CRUCIBLE_ASSERT_EQ(s1, s2);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_ne_immutable_view)
  {
    int const sample_data[] { 1, 2, 3 };

    auto const s1 { make_immutable_view(sample_data).take_first(2) };
    auto const s2 { make_immutable_view(sample_data).take_last(2) };
    CRUCIBLE_ASSERT_NE(s1, s2);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_eq_carray)
  {
    int const sample_data[] { 1, 2, 3 };

    auto const immutable_view { make_immutable_view(sample_data) };
    CRUCIBLE_ASSERT_EQ(immutable_view, sample_data);
    CRUCIBLE_ASSERT_EQ(sample_data, immutable_view);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_ne_carray)
  {
    int const sample_data[] { 1, 2, 3 };

    auto const immutable_view { make_immutable_view(sample_data).take_last(2) };
    CRUCIBLE_ASSERT_NE(immutable_view, sample_data);
    CRUCIBLE_ASSERT_NE(sample_data, immutable_view);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_eq_mutable_view)
  {
    int sample_data[] { 1, 2, 3 };

    auto s1 { make_mutable_view(sample_data) };
    auto s2 { make_mutable_view(sample_data) };

    CRUCIBLE_ASSERT_EQ(s1, s2);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_ne_mutable_view)
  {
    int sample_data[] { 1, 2, 3 };

    auto s1 { make_mutable_view(sample_data).take_first(2) };
    auto s2 { make_mutable_view(sample_data).take_last(2) };
    CRUCIBLE_ASSERT_NE(s1, s2);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_eq_carray)
  {
    int sample_data[] { 1, 2, 3 };

    auto mutable_view { make_mutable_view(sample_data) };
    CRUCIBLE_ASSERT_EQ(mutable_view, sample_data);
    CRUCIBLE_ASSERT_EQ(sample_data, mutable_view);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_ne_carray)
  {
    int sample_data[] { 1, 2, 3 };

    auto mutable_view { make_mutable_view(sample_data).take_last(2) };
    CRUCIBLE_ASSERT_NE(mutable_view, sample_data);
    CRUCIBLE_ASSERT_NE(sample_data, mutable_view);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_eq_heap_buffer)
  {
    auto const a1 { make_heap_buffer<int>({ 1, 2, 3 }) };
    auto const a2 { make_heap_buffer<int>({ 1, 2, 3 }) };
    CRUCIBLE_ASSERT_EQ(a1, a2);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_ne_heap_buffer)
  {
    auto const a1 { make_heap_buffer<int>({ 1, 2, 3 }) };
    auto const a2 { make_heap_buffer<int>({ 4, 5, 6 }) };
    CRUCIBLE_ASSERT_NE(a1, a2);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_eq_carray)
  {
    auto array { make_heap_buffer({ 1, 2, 3 }) };
    int expected_data[] { 1, 2, 3 };

    CRUCIBLE_ASSERT_EQ(array, expected_data);
    CRUCIBLE_ASSERT_EQ(expected_data, array);
  }

  CRUCIBLE_TEST_SCENARIO(heap_buffer_ne_carray)
  {
    auto array { make_heap_buffer({ 1, 2, 3, 4 }) };
    int expected_data[] { 1, 2, 3 };

    CRUCIBLE_ASSERT_NE(array, expected_data);
    CRUCIBLE_ASSERT_NE(expected_data, array);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_eq_mutable_view)
  {
    int sample_data[] { 1, 2, 3 };

    auto immutable_view { make_immutable_view(sample_data) };
    auto mutable_view { make_mutable_view(sample_data) };

    CRUCIBLE_ASSERT_EQ(immutable_view, mutable_view);
    CRUCIBLE_ASSERT_EQ(mutable_view, immutable_view);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_ne_mutable_view)
  {
    int sample_data[] { 1, 2, 3 };

    auto immutable_view { make_immutable_view(sample_data) };
    auto mutable_view { make_mutable_view(sample_data).take_from(1) };

    CRUCIBLE_ASSERT_NE(immutable_view, mutable_view);
    CRUCIBLE_ASSERT_NE(mutable_view, immutable_view);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_eq_heap_buffer)
  {
    auto const array { make_heap_buffer<int>({ 1, 2, 3 }) };
    auto const immutable_view { array.view() };
    CRUCIBLE_ASSERT_EQ(immutable_view, array);
    CRUCIBLE_ASSERT_EQ(array, immutable_view);
  }

  CRUCIBLE_TEST_SCENARIO(immutable_view_ne_heap_buffer)
  {
    auto const array { make_heap_buffer<int>({ 1, 2, 3 }) };
    auto const immutable_view { array.view().take_to(1) };
    CRUCIBLE_ASSERT_NE(immutable_view, array);
    CRUCIBLE_ASSERT_NE(array, immutable_view);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_eq_heap_buffer)
  {
    auto array { make_heap_buffer<int>({ 1, 2, 3 }) };
    auto mutable_view { array.view() };
    CRUCIBLE_ASSERT_EQ(mutable_view, array);
    CRUCIBLE_ASSERT_EQ(array, mutable_view);
  }

  CRUCIBLE_TEST_SCENARIO(mutable_view_ne_heap_buffer)
  {
    auto array { make_heap_buffer<int>({ 1, 2, 3 }) };
    auto mutable_view { array.view().take_to(1) };
    CRUCIBLE_ASSERT_NE(mutable_view, array);
    CRUCIBLE_ASSERT_NE(array, mutable_view);
  }

  // CONSTRUCTORS

  CRUCIBLE_TEST_SCENARIO(make_heap_buffer)
  {
    heap_buffer<int> const array;
    CRUCIBLE_ASSERT(array.is_empty());
    CRUCIBLE_ASSERT_EQ(array.size(), 0);
  }

  CRUCIBLE_TEST_SCENARIO(make_heap_buffer_with_elements)
  {
    auto const array { make_heap_buffer<std::byte>({ std::byte { 0x11 }, std::byte { 0x22 }, std::byte { 0x33 } }) };

    CRUCIBLE_ASSERT(!array.is_empty());
    CRUCIBLE_ASSERT_EQ(array.size(), 3);
    CRUCIBLE_ASSERT_EQ(array[0], std::byte { 0x11 });
    CRUCIBLE_ASSERT_EQ(array[1], std::byte { 0x22 });
    CRUCIBLE_ASSERT_EQ(array[2], std::byte { 0x33 });
  }

  CRUCIBLE_TEST_SCENARIO(make_heap_buffer_from_pointer_and_size)
  {
    std::byte const sample_data[] { std::byte { 0xab }, std::byte { 0xcd }, std::byte { 0xef } };
    heap_buffer<std::byte> const array { sample_data, 3 };

    CRUCIBLE_ASSERT(!array.is_empty());
    CRUCIBLE_ASSERT_EQ(array.size(), 3);
    CRUCIBLE_ASSERT_EQ(array[0], sample_data[0]);
    CRUCIBLE_ASSERT_EQ(array[1], sample_data[1]);
    CRUCIBLE_ASSERT_EQ(array[2], sample_data[2]);
  }

  CRUCIBLE_TEST_SCENARIO(make_heap_buffer_with_size)
  {
    auto const array { make_heap_buffer<string>(3) };

    CRUCIBLE_ASSERT(!array.is_empty());
    CRUCIBLE_ASSERT_EQ(array.size(), 3);
    CRUCIBLE_ASSERT_EQ(array[0], "");
    CRUCIBLE_ASSERT_EQ(array[1], "");
    CRUCIBLE_ASSERT_EQ(array[2], "");
  }
}

CRUCIBLE_TEST_MAIN