Paul Rogers created DRILL-5318:
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Summary: Create a sub-operator test framework
Key: DRILL-5318
URL: https://issues.apache.org/jira/browse/DRILL-5318
Project: Apache Drill
Issue Type: Improvement
Components: Tools, Build & Test
Affects Versions: 1.10.0
Reporter: Paul Rogers
Assignee: Paul Rogers
Fix For: Future
Drill provides two unit test frameworks for whole-server, SQL-based testing:
the original {{BaseTestQuery}} and the newer {{ClusterFixture}}. Both use the
{{TestBuilder}} mechanism to build system-level functional tests that run
queries and check results.
Jason provided an operator-level test framework based, in part on mocks:
As Drill operators become more complex, we have a crying need for true
unit-level tests at a level below the whole system and below operators. That
is, we need to test the individual pieces that, together, form the operator.
This umbrella ticket includes a number of tasks needed to create the
sub-operator framework. Our intention is that, over time, as we find the need
to revisit existing operators, or create new ones, we can employ the
sub-operator test framework to exercise code at a finer granularity than is
possible prior to this framework.
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