object TestProjection
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- TestProjection.scala
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- def apply[Offset, Envelope](projectionId: ProjectionId, sourceProvider: SourceProvider[Offset, Envelope], handler: () => Handler[Envelope]): TestProjection[Offset, Envelope]
Create a TestProjection that can be used to assert a akka.projection.scaladsl.Handler implementation.
Create a TestProjection that can be used to assert a akka.projection.scaladsl.Handler implementation.
The TestProjection allows the user to test their akka.projection.scaladsl.Handler implementation in isolation, without requiring the Projection implementation (i.e. a database) to exist at test runtime.
The akka.projection.scaladsl.SourceProvider can be a concrete implementation, or a TestSourceProvider to provide further test isolation.
The TestProjection uses an at-least-once offset saving strategy where an offset is saved for each element.
The TestProjection does not support grouping, at least once offset batching, or restart backoff strategies.
- projectionId
- a Projection ID
- sourceProvider
- a akka.projection.scaladsl.SourceProvider to supply envelopes to the Projection
- handler
- a user-defined akka.projection.scaladsl.Handler to run within the Projection
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