MINOR: Add note about sqllogictest to contributor guide (#4469)

* docs: Add note about sqllogictest to contributor guide * Update docs/source/contributor-guide/index.md
apache · Dec 2, 2022 · 5d69fa3 · 5d69fa3
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diff --git a/docs/source/contributor-guide/index.md b/docs/source/contributor-guide/index.md
@@ -134,6 +134,13 @@ cargo test -p datafusion --tests sql_integration
 
 One very important test is the [sql_integration](../../../datafusion/core/tests/sql_integration.rs) test which validates DataFusion's ability to run a large assortment of SQL queries against an assortment of data setups.
 
+### sqllogictests Tests
+
+The [sqllogictests](../../../datafusion/core/tests/sqllogictests) also validate DataFusion SQL against an assortment of data setups.
+
+Data Driven tests have many benefits including being easier to write and maintain. We are in the process of [migrating sql_integration tests](https://github.com/apache/arrow-datafusion/issues/4460) and encourage
+you to add new tests using sqllogictests if possible.
+
 ### SQL / Postgres Integration Tests
 
 The [integration-tests](../../../integration-tests) directory contains a harness that runs certain queries against both postgres and datafusion and compares results