tui-textarea/bench

Benchmarks for tui-textarea using Criterion.rs.

Running all benchmarks (Rust runner — recommended)

The Rust runner executes every benchmark target sequentially and prints per-target start time, exit status, and wall duration.

cargo run -p tui-textarea-bench --bin runner

Example output:

[1/12] START insert_append at 2026-02-18T12:00:00Z
[1/12] DONE  insert_append status=ok duration=42.31s
[2/12] START insert_random at 2026-02-18T12:00:42Z
...
All 14 benchmark targets completed successfully.

Running a single benchmark target

cargo bench -p tui-textarea-bench --bench insert_append

Available targets:

Target	What it measures
insert_append	Appending lorem lines sequentially
insert_random	Inserting lorem lines at random positions
insert_long	Typing a long line without newlines
search_forward	Forward regex search
search_backward	Backward regex search
cursor_char	Character-level cursor movement
cursor_word	Word-level cursor movement
cursor_paragraph	Paragraph-level cursor movement
cursor_edge	Head/end and top/bottom jumps
delete_char	Deleting one character at a time
delete_word	Deleting one word at a time
delete_line	Deleting to line head
wrap_render	Rendering with Word/Glyph/WordOrGlyph wrap modes
undo_redo	Undo and redo traversal at varying history depths

Filtering within a target

Pass a filter string after -- to run only matching cases:

cargo bench -p tui-textarea-bench --bench insert_append -- append::10_lorem

Comparing branches with critcmp

git checkout main
cargo bench -p tui-textarea-bench -- --save-baseline base

git checkout your-feature
cargo bench -p tui-textarea-bench -- --save-baseline change

critcmp base change

Note on cargo test -p tui-textarea-bench

Running cargo test on this package is a smoke test only — it verifies that the benchmark code compiles and runs without panicking, but produces no timing data. Use cargo bench or the Rust runner for real measurements.