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Copilot AI commented Jan 18, 2026

The ring buffer implementation has separate code paths for trivially copyable types (using memcpy/std::swap) and non-trivially copyable types (using move construction), but existing tests only exercised the trivial path with int.

Changes

  • Added tests for move construction, move assignment, and swap operations using std::string and std::vector<int>
  • Tests verify the std::false_type specializations of move_impl and swap_impl work correctly
TEST(RingBufferTest, MoveConstructionWithNonTriviallyCopyableType) {
    ring_buffer<std::string, 4> b1;
    b1.push_back("hello");
    b1.push_back("world");
    // ... verify move semantics work correctly
}
  • Updated .gitignore to exclude CodeQL build artifacts

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Important

Add tests for move and swap operations with non-trivially copyable types in test_main.cpp and update .gitignore.

  • Tests:
    • Add tests for move construction, move assignment, and swap operations with std::string and std::vector<int> in test_main.cpp.
    • Verify std::false_type specializations of move_impl and swap_impl.
  • Misc:
    • Update .gitignore to exclude CodeQL build artifacts.

This description was created by Ellipsis for cf5f003. You can customize this summary. It will automatically update as commits are pushed.

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Copilot AI and others added 3 commits January 18, 2026 10:01
Co-authored-by: bugparty <1510776+bugparty@users.noreply.github.com>
Co-authored-by: bugparty <1510776+bugparty@users.noreply.github.com>
Co-authored-by: bugparty <1510776+bugparty@users.noreply.github.com>
Copilot AI changed the title [WIP] Update ring buffer implementation based on feedback Add test coverage for move/swap operations with non-trivially copyable types Jan 18, 2026
Copilot AI requested a review from bugparty January 18, 2026 10:04
@bugparty bugparty marked this pull request as ready for review January 18, 2026 10:06
Copilot AI review requested due to automatic review settings January 18, 2026 10:06
@bugparty bugparty merged commit 235c9ce into improvement Jan 18, 2026
1 check was pending
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Important

Looks good to me! 👍

Reviewed everything up to cf5f003 in 33 seconds. Click for details.
  • Reviewed 89 lines of code in 2 files
  • Skipped 1 files when reviewing.
  • Skipped posting 5 draft comments. View those below.
  • Modify your settings and rules to customize what types of comments Ellipsis leaves. And don't forget to react with 👍 or 👎 to teach Ellipsis.
1. _codeql_detected_source_root:1
  • Draft comment:
    Add a trailing newline for consistency.
  • Reason this comment was not posted:
    Confidence changes required: 0% <= threshold 50% None
2. test_main.cpp:339
  • Draft comment:
    Comprehensive tests for non-trivially copyable types (move/swap) are added—good coverage.
  • Reason this comment was not posted:
    Confidence changes required: 0% <= threshold 50% None
3. test_main.cpp:350
  • Draft comment:
    Ensure move constructor leaves the source buffer in an empty state as expected by the test.
  • Reason this comment was not posted:
    Confidence changes required: 0% <= threshold 50% None
4. test_main.cpp:365
  • Draft comment:
    Verify that move assignment resets the source buffer; test correctly expects an empty source.
  • Reason this comment was not posted:
    Confidence changes required: 0% <= threshold 50% None
5. test_main.cpp:399
  • Draft comment:
    Nice use of ADL with 'using std::swap' for non-member swap in non-trivially copyable type test.
  • Reason this comment was not posted:
    Confidence changes required: 0% <= threshold 50% None

Workflow ID: wflow_3geD5LMhX96z5LTd

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Pull request overview

This PR adds comprehensive test coverage for move and swap operations with non-trivially copyable types to ensure the ring buffer implementation correctly handles types that require move construction rather than memcpy operations.

Changes:

  • Added four new test cases using std::string and std::vector<int> to verify move construction, move assignment, member swap, and non-member swap operations work correctly with non-trivially copyable types
  • Updated .gitignore to exclude CodeQL build artifacts

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File Description
test_main.cpp Added four test cases for move/swap operations with std::string and std::vector<int> to verify non-trivial type handling
.gitignore Added _codeql_build_dir to ignore CodeQL build artifacts
_codeql_detected_source_root CodeQL configuration file indicating source root directory

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2 participants