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Kenneth Knowles updated BEAM-3159: ---------------------------------- Issue Type: Sub-task (was: Bug) Parent: BEAM-3650 > DoFnTester should be deprecated in favor of TestPipeline > -------------------------------------------------------- > > Key: BEAM-3159 > URL: https://issues.apache.org/jira/browse/BEAM-3159 > Project: Beam > Issue Type: Sub-task > Components: sdk-java-core > Reporter: Ben Chambers > Assignee: Kenneth Knowles > Priority: Minor > Fix For: 2.4.0 > > Time Spent: 20m > Remaining Estimate: 0h > > Reasons: > 1. The logical unit within a Beam pipeline is a transform. Either a small > transform like a ParDo or a larger composite transform. Unit tests should > focus on these units, rather than probing specific behaviors of the > user-defined functions. > 2. The way that a runner interacts with a user-defined function is not > necessarily obvious. DoFnTester allows testing non-sensical cases that > wouldn't arise in practice, since it allows low-level interactions with the > actual UDFs. > Instead, we should encourage the use of TestPipeline with the direct runner. > This allows testing a single transform (such as a ParDo running a UDF) in > context. It also makes it easier to test things like side-inputs and multiple > outputs, since you use the same techniques in the test as you would in a real > pipeline, rather than requiring a whole new API. -- This message was sent by Atlassian JIRA (v7.6.3#76005)