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influxdb/query_tests
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Sam Arnold 03f456d8fd
fix: optimize tag_keys to go only to schema when predicate is empty (#4985) 
* docs: fix comment

* test: add test for delete behaviour

* fix: tag_keys optimization for empty predicate

Also need to eliminate 'true' predicates from simplified predicate so
is_empty works correctly.

* refactor: use lit instead of spelling out literal true

Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>

Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
 		2022-07-05 12:45:25 +00:00
..
cases chore: Update datafusion (#5020) 2022-07-01 19:59:41 +00:00
generate fix: ensure querier cache is refreshed for partition sort key (#4660) 2022-05-25 10:44:42 +00:00
src fix: optimize tag_keys to go only to schema when predicate is empty (#4985) 2022-07-05 12:45:25 +00:00
Cargo.toml chore(deps): Bump once_cell from 1.12.0 to 1.13.0 (#5033) 2022-07-05 08:54:51 +00:00
README.md fix: Remove db crate from query_tests 2022-05-06 11:30:36 -04:00

README.md

This crate contains "integration" tests for the query engine. Specifically, it runs queries against a fully created database instance, records the output, and compares it to expected output.

Some tests simply have their inputs and outputs hard coded into #[test] annotated tests as is Rust's norm.

The tests in src/runner are driven somewhat more dynamically based on input files.

Cookbook: Adding a new Test

How to make a new test:

  1. Add a new file .sql to the cases/in directory
  2. Regenerate file: (cd generate && cargo run)
  3. Run the tests `` cargo test -p query_tests`
  4. You will get a failure message that contains examples of how to update the files

Example output

Possibly helpful commands:
  # See diff
  diff -du "/Users/alamb/Software/influxdb_iox/query_tests/cases/in/pushdown.expected" "/Users/alamb/Software/influxdb_iox/query_tests/cases/out/pushdown.out"
  # Update expected
  cp -f "/Users/alamb/Software/influxdb_iox/query_tests/cases/in/pushdown.out" "/Users/alamb/Software/influxdb_iox/query_tests/cases/out/pushdown.expected"

Cookbook: Adding a new test scenario

Each test can be defined in terms of a "setup" (a set of actions taken to prepare the state of database).

In the future, we envision more fine grained control of these setups (by implementing some of the database commands as IOX_TEST commands), but for now they are hard coded.

The SQL files refer to the setups with a specially formatted comment:

-- IOX_SETUP: OneMeasurementFourChunksWithDuplicates

To add a new setup, follow the pattern in scenario.rs of get_all_setups.