datasette/tests
Alex Garcia 745b7872b8 Remove the hand-rolled tracer now that OpenTelemetry covers the same ground
Datasette had two tracing systems since the OpenTelemetry spans landed. The
hand-rolled one measures the wrong thing - issue 1730, open since 2022, is
about exactly that - and it cannot be rebuilt on top of the new spans without
core owning a TracerProvider, which is the one thing the OTel design refuses
to do. Rather than carry duplicate instrumentation on the db.execute() hot
path indefinitely, the old system goes.

Deleted: datasette/tracer.py, the trace_debug setting, the AsgiTracer
response-rewriting middleware and the ?_trace=1 query-string argument.

- datasette/database.py: the four `with trace(...)` wrappers PR 1 deliberately
  nested the OTel spans inside are removed and the bodies dedented. That also
  retires the `# noqa: SIM117` comments those wrappers required - a leftover
  unnecessary noqa trips ruff's RUF100 - and `kwargs["count"] = count` in
  execute_write_many, which fed the old tracer only. `git diff -w` on this file
  shows nothing but the deleted lines.
- datasette/views/base.py: stream_csv() still read ?_trace=1 to wrap CSV output
  in an HTML <textarea> debug page. That whole branch, including the
  EscapeHtmlWriter selection and the conditional content-type, is gone. The
  EscapeHtmlWriter class itself stays in datasette.utils - it is an importable
  public name and removing it would widen the API break.
- .github/workflows/deploy-latest.yml no longer passes --setting trace_debug 1.
  Worth stating precisely, because the ticket claimed otherwise: this would not
  have broken the deploy. Setting.convert() in cli.py only rewrites a bare name
  to settings.<name> for *known* settings, so `--setting trace_debug 1` would
  have been silently accepted as a meaningless top-level config key. The flag is
  removed because it is dead, not because it errors.

Tests. tests/test_tracer.py is deleted outright (6 items). Four other tests used
?_trace=1 as an assertion instrument rather than testing tracing:

- test_csv_trace tested the trace mechanism itself - deleted.
- test_table_csv_stream_does_not_calculate_facets,
  test_table_csv_stream_does_not_calculate_counts and
  test_nocount_nofacet_if_shape_is_object test real behaviour, and are rebuilt
  against captured spans. All three had silently stopped being able to fail: the
  facets test looked for "select content, count(*) as n", which facet suggestion
  has not emitted since it moved to a `with limited as (...)` CTE, and none of
  the three requested the count or facet work whose suppression they claim to
  check. The rebuilt versions ask for it explicitly, match strings the current
  SQL contains, and carry a guard assertion so an empty span list cannot
  masquerade as a pass. Each was confirmed to fail with the covered code broken.
- test_trace_correctly_escaped is kept, renamed test_query_page_escapes_sql,
  with ?_trace=1 dropped. It ran against ds_client, which has no trace_debug, so
  it never exercised the tracer - what it actually covered is the query page
  echoing user SQL into HTML, the surface of the two reflected-XSS advisories in
  issue 1360, and nothing else in the suite covers it. Deleting it would have
  quietly dropped that.

tests/test_utils.py's pairs_to_nested_config case used settings.trace_debug to
check that a later key overrides an earlier one; it now uses template_debug
rather than losing the case.

Docs: the datasette.tracer section of internals.rst, the trace_debug section of
settings.rst, the ?_trace=1 entries in json_api.rst and introspection.rst, and
the regenerated cli-reference.rst. changelog.rst gets a breaking-change entry
and keeps all its historical ?_trace=1 entries - two of them had to lose a
:ref: role pointing at a label this commit deletes, or Sphinx warns on every
build.

2368 passed, 39 skipped, 6 xfailed, 15 xpassed, 140 subtests, against 2375 /
141 before. Net -7 tests, fully accounted for: -6 test_tracer.py, -1
test_csv_trace, -1 test_trace_correctly_escaped, +1 test_query_page_escapes_sql.
The lost subtest is the per-setting case trace_debug generated in
test_settings_are_documented.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-01 16:24:35 -07:00
..
plugins Remove the hand-rolled tracer now that OpenTelemetry covers the same ground 2026-09-01 16:24:35 -07:00
test_templates Fix handling of nested custom page wildcard paths, closes #996 2020-10-07 15:51:11 -07:00
__init__.py Broke up test_app into test_api and test_html 2017-12-15 04:08:24 -08:00
build_small_spatialite_db.py New run_sanity_checks mechanism, for SpatiLite 2019-05-11 15:55:30 -07:00
conftest.py Remove the hand-rolled tracer now that OpenTelemetry covers the same ground 2026-09-01 16:24:35 -07:00
ext.c Add new entrypoint option to --load-extensions. (#1789) 2022-08-23 11:34:30 -07:00
fixtures.py Remove the hand-rolled tracer now that OpenTelemetry covers the same ground 2026-09-01 16:24:35 -07:00
spatialite.db New run_sanity_checks mechanism, for SpatiLite 2019-05-11 15:55:30 -07:00
test-datasette-load-plugins.sh fix (typo): Corrected spelling of 'environments' (#2268) 2024-02-19 14:41:32 -08:00
test_actions_sql.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_actor_restriction_bug.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_allowed_many.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_allowed_resources.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_api.py Remove the hand-rolled tracer now that OpenTelemetry covers the same ground 2026-09-01 16:24:35 -07:00
test_api_write.py disable_fts() before dropping table 2026-08-10 15:03:29 -07:00
test_auth.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_autocomplete.py Add "ok": true to every JSON object success response 2026-07-04 13:40:05 +00:00
test_base_view.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_cli.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_cli_serve_get.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_cli_serve_server.py Run datasette serve startup and uvicorn on a single event loop (#2886) 2026-09-01 09:32:37 -07:00
test_column_types.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_config_dir.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_config_permission_rules.py Run black formatter 2025-10-25 15:38:07 -07:00
test_crossdb.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_csrf_middleware.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_csv.py Remove the hand-rolled tracer now that OpenTelemetry covers the same ground 2026-09-01 16:24:35 -07:00
test_custom_pages.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_datasette_https_server.sh More robust test_datasette_https_server.sh test 2026-06-22 10:11:56 -07:00
test_debug_autocomplete.py Autocomplete widget and /-/debug/autocomplete test page 2026-06-13 22:59:37 -07:00
test_default_deny.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_docs.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_docs_plugins.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_error_shape.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_extras.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_facets.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_fd_leak.py FD-leak regression test for Datasette.close() 2026-04-16 20:18:05 -07:00
test_filters.py Fix for SQL injection issue in table filters, refs #2868 2026-08-06 11:19:50 -07:00
test_fixtures.py datasette.fixtures module, closes #2733 2026-05-21 23:05:37 -07:00
test_html.py Remove the hand-rolled tracer now that OpenTelemetry covers the same ground 2026-09-01 16:24:35 -07:00
test_http_span.py Name the request span after the route it matched 2026-09-01 16:24:35 -07:00
test_internal_db.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_internals_database.py Propagate otel context across the thread boundaries 2026-09-01 16:24:35 -07:00
test_internals_datasette.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_internals_datasette_client.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_internals_request.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_internals_response.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_internals_urls.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_jump.py Autocomplete widget and /-/debug/autocomplete test page 2026-06-13 22:59:37 -07:00
test_label_column_for_table.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_lifespan.py Run startup via ASGI lifespan instead of waiting for the first request (#2887) 2026-09-01 09:39:25 -07:00
test_load_extensions.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_messages.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_multipart.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_package.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_permission_endpoints.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_permissions.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_playwright.py Make binary playwright test more robust 2026-07-05 22:46:00 -07:00
test_plugins.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_publish_cloudrun.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_publish_heroku.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_pytest_autoclose_plugin.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_queries.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_restriction_sql.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_routes.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_schema_endpoints.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_search_tables.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_spatialite.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_stored_queries.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_success_envelope.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_table_api.py Remove the hand-rolled tracer now that OpenTelemetry covers the same ground 2026-09-01 16:24:35 -07:00
test_table_html.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_telemetry.py Stop marking a deliberately-short query budget as a span error 2026-09-01 16:24:35 -07:00
test_telemetry_registry.py Name the request span after the route it matched 2026-09-01 16:24:35 -07:00
test_template_context.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_token_handler.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_utils.py Remove the hand-rolled tracer now that OpenTelemetry covers the same ground 2026-09-01 16:24:35 -07:00
test_utils_check_callable.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_utils_permissions.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_utils_sql_analysis.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
test_write_sql_operation_decisions.py Refactored write decision tests 2026-05-28 12:09:20 -07:00
test_write_wrapper.py Upgrade to ruff>=0.16.0 (#2857) 2026-07-25 15:47:08 -07:00
utils.py From 409 warnings down to 52 warnings. 2026-04-14 18:46:47 -07:00