[Test Coverage] Multiline YAML strings not accounted for in pipelines

[andrewkroh]

When pipeline YAML source lines are associated to a specific processor, our code does not account for YAML blocks that may span multiple lines. In this case, a script processor that uses a multiline source shows only the line containing the source: as covered but not the entire value.

References

• Add related.entity to cloudtrail integration integrations#11115 (comment)

[jsoriano]

@haetamoudi is working on this issue in #2063