Hi, Just filed JIRA https://issues.apache.org/jira/browse/BEAM-2644
Many transforms that take ValueProvider's have different codepaths for when the provider is accessible or not. However, as far as I can tell, there is no good way to construct a pipeline with PipelineOptions containing an inaccessible ValueProvider, and then test how it would run as a template invocation with an actual value supplied. The only way I could come up with is mimicking https://github.com/apache/beam/blob/master/sdks/java/core/src/test/java/org/apache/beam/sdk/options/ValueProviderTest.java#L202 , which is very ugly. Am I missing something? Is there already a good way to do this?
