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• Independent components can be exercised by instantiating them independently in a test.

• Unit tests for SQL functionality can be exercised via the SQL logic test framework (see pkg/sql/logictest and dev testlogic)

• Other unit tests that needs a functional SQL or KV layer can use TestServer and TestCluster.

  • Conversely, avoid using TestServer/TestCluster in unit tests that do not need a full SQL/KV layer. This will make the test run faster.

Integration testing

Integration tests are valuable to exercise a product journey as experienced by an end-user.

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