Add EmptyCollectionWriter for MultipartFormContentProcessor #99
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This PR adds an
EmptyCollectionWritertoMultipartFormContentProcessorinSpringFormEncoder. ThisWriteris a no-op.This is related to spring-cloud/spring-cloud-openfeign#352. Although the problem could have been fixed in spring-cloud-openfeign, it was agreed that doing it upstream here would be better.
In
spring-cloud-openfeign,SpringFormEncoderis a "delegate" ofSpringEncoder, while in this repository (feign-form-spring's unit tests), (an older version of)SpringEncoderis a delegate ofSpringFormEncoder. What this means is that the unit tests in feign-form-spring do not exactly reflect the actual use in spring-cloud-openfeign, so it is not meaningful to add a unit test in this PR as it would pass even without theEmptyCollectionWriter.