Organize tests by type and function

[ynqa]

Summary

Reorganize tests so their module paths reflect the production type and function or method under test.

• Standardize outer inline test modules as tests
• Nest tests by production type and function or method
• Rename generic test / test_* cases to describe the expected behavior
• Split cases that covered multiple methods into focused tests
• Align JSON/YAML integration test names with the behavior-oriented convention
• Document the test organization rules in AGENTS.md

This makes test ownership clearer and produces more descriptive paths in cargo test output.

Scope

This is a test-organization refactor. No production API or runtime behavior changes are intended.

Verification

• cargo fmt --all -- --check
• cargo clippy
• cargo test -- --nocapture --format pretty

[Copilot]

Pull request overview

This PR refactors the repository’s test organization so module paths reflect the production type and the function/method under test, improving cargo test output readability and test ownership clarity without intending to change runtime behavior.

Changes:

• Re-names and re-nests unit tests into tests -> <type> -> <function/method> module hierarchies across crates.
• Renames behavior-ambiguous test functions (e.g., test, test_*) to behavior-oriented names.
• Documents the test-organization convention in AGENTS.md.

Reviewed changes

Copilot reviewed 47 out of 47 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
promkit/src/terminal_session.rs	Reorganizes TerminalSession tests into nested modules by method/behavior.
promkit-widgets/tests/yamlz/multi_documents.rs	Renames YAML integration test to behavior-oriented name.
promkit-widgets/tests/jsonz/up.rs	Renames JSON navigation test to behavior-oriented name.
promkit-widgets/tests/jsonz/toggle.rs	Renames JSON toggle tests to behavior-oriented names.
promkit-widgets/tests/jsonz/tail.rs	Renames tail/JSONL tests to behavior-oriented names.
promkit-widgets/tests/jsonz/set_rows_visibility.rs	Renames visibility test to behavior-oriented name.
promkit-widgets/tests/jsonz/render_pretty.rs	Renames pretty-render test to behavior-oriented name.
promkit-widgets/tests/jsonz/multi_documents.rs	Renames multi-document tests to behavior-oriented names.
promkit-widgets/tests/jsonz/head.rs	Renames head/JSONL tests to behavior-oriented names.
promkit-widgets/tests/jsonz/get_all_paths.rs	Renames path-extraction tests to behavior-oriented names.
promkit-widgets/tests/jsonz/extract.rs	Renames extraction tests to behavior-oriented names.
promkit-widgets/tests/jsonz/down.rs	Renames JSON navigation tests to behavior-oriented names.
promkit-widgets/tests/jsonz/create_rows.rs	Renames row-creation tests to behavior-oriented names.
promkit-widgets/src/text/text.rs	Restructures Text tests into per-method modules and splits navigation coverage.
promkit-widgets/src/text/config.rs	Renames serde test module/test to behavior-oriented names.
promkit-widgets/src/text.rs	Restructures State::hit_at tests into tests -> state -> hit_at.
promkit-widgets/src/text_editor/text_editor.rs	Large re-org of TextEditor tests into nested per-method modules with clearer names.
promkit-widgets/src/text_editor/history.rs	Splits history navigation tests into backward/forward modules with clearer names.
promkit-widgets/src/text_editor/config.rs	Renames serde test module/test to behavior-oriented names.
promkit-widgets/src/text_editor.rs	Restructures State::hit_at tests into nested modules by method.
promkit-widgets/src/table.rs	Restructures Document and State tests into nested modules by type/method.
promkit-widgets/src/structured/yaml/document.rs	Reorganizes YAML document parsing tests into from_str / from_reader modules.
promkit-widgets/src/structured/yaml/config.rs	Wraps config tests under config and nests render_terminal_rows.
promkit-widgets/src/structured/yaml.rs	Reorganizes YAML widget State tests into nested modules by method.
promkit-widgets/src/structured/tree/treez.rs	Reorganizes tree adapter/row-op tests into nested modules by behavior.
promkit-widgets/src/structured/tree/config.rs	Renames serde test module/test to behavior-oriented names.
promkit-widgets/src/structured/tree.rs	Reorganizes tree widget State tests into nested modules by method.
promkit-widgets/src/structured/json/document.rs	Reorganizes JSON document parsing tests into from_str / from_reader modules.
promkit-widgets/src/structured/json/config.rs	Reorganizes config tests into config modules; renames serde tests for clarity.
promkit-widgets/src/structured/json.rs	Reorganizes JSON widget State tests into nested modules by method.
promkit-widgets/src/prefix_search/prefix_search.rs	Splits PrefixSearch tests by method (search, backward, forward, etc.).
promkit-widgets/src/prefix_search/config.rs	Renames serde test module/test to behavior-oriented names.
promkit-widgets/src/prefix_search.rs	Reorganizes State::create_graphemes tests into nested modules.
promkit-widgets/src/listbox/listbox.rs	Splits Listbox tests by method with behavior-oriented names.
promkit-widgets/src/listbox/config.rs	Renames serde test module/test to behavior-oriented names.
promkit-widgets/src/listbox.rs	Reorganizes State::hit_at tests into nested modules.
promkit-widgets/src/checkbox/config.rs	Renames serde test module/test to behavior-oriented names.
promkit-widgets/src/checkbox/checkbox.rs	Reorganizes checkbox tests into per-method modules; renames generic test names.
promkit-widgets/src/checkbox.rs	Reorganizes State::hit_at tests into nested modules.
promkit-core/src/widget.rs	Reorganizes WidgetViewport tests into nested modules by method.
promkit-core/src/terminal.rs	Reorganizes Terminal tests into nested modules by type/method.
promkit-core/src/render/layout.rs	Reorganizes layout tests into nested modules by function/type.
promkit-core/src/render.rs	Reorganizes renderer hit-test test into nested module.
promkit-core/src/grapheme.rs	Renames/restructures StyledGraphemes tests into nested modules with clearer names.
examples/repl/src/repl.rs	Reorganizes repl example tests into nested modules by function/behavior.
examples/csv/src/csv.rs	Reorganizes csv example tests into nested modules by type/function.
AGENTS.md	Documents the test-organization convention and example structure.

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