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Quidem UT

Enables to write sql level tests easily. Can be used to write tests against existing test backends (ComponentSupplier) - by doing so the testcases can be moved closer to the exercised codes.

Usage

Install java&maven (if needed)

If you don't have java&maven - one way to set that up is by using sdkman like this:

# install sdkman
curl -s "https://get.sdkman.io" | bash
# at the end of installation either open a new terminal; or follow the instructions at the end

# install java&maven
sdk install java 11.0.23-zulu
sdk install maven

# run mvn to see if it works
mvn --version

# download druid sources
git clone https://github.com/apache/druid

Running these tests

CI execution happens by a standard JUnit test QTest in this module
the dev/quidem script can be used to run these tests (after the project is built)

Launching a test generating broker

make sure to build the project first; one way to do that is:

mvn install -pl quidem-ut/ -am -DskipTests -Pskip-static-checks

launch the broker instance with:
```
mvn exec:exec -pl quidem-ut -Dquidem.record.autostart=true
```
- the broker will be running at http://localhost:12345
- the used test configuration backend can configured by supplying quidem.uri
```
mvn exec:exec -pl quidem-ut -Dquidem.uri=druidtest:///?componentSupplier=ThetaSketchComponentSupplier
```
- new record files can be started by calling http://localhost:12345/quidem/start
  - if quidem.record.autostart is omitted recording will not start
after finished with the usage of the broker ; a new record-123.iq file will be in the project's worktree - it will contain all the executed statements
- running dev/quidem -Dquidem.overwrite updates the resultsets of all iq files around there
- rename the testfile to have a more descriptive name

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