Projection positional operator $ should not return error for no match #3053
Open
Description
What should be done?
Target returns error when compat does not. See issue link added by PR #3052
=== RUN TestQueryProjectionPositionalOperatorCompat/PartialProjection/TestQueryProjectionPositionalOperatorCompat_ArrayAndDocuments
query_projection_compat_test.go:347: Target error: (Location51246) Executor error during find command :: caused by :: positional operator '.$' couldn't find a matching element in the array
query_projection_compat_test.go:347: Compat error: <nil>
query_projection_compat_test.go:347:
Error Trace: /home/chi/go/src/github.com/chilagrow/FerretDB/integration/helpers.go:199
/home/chi/go/src/github.com/chilagrow/FerretDB/integration/query_compat_test.go:148
Error: Should be true
Test: TestQueryProjectionPositionalOperatorCompat/PartialProjection/TestQueryProjectionPositionalOperatorCompat_ArrayAndDocuments
Messages: expected is <nil>, not mongo.CommandError
--- FAIL: TestQueryProjectionPositionalOperatorCompat/PartialProjection/TestQueryProjectionPositionalOperatorCompat_ArrayAndDocuments (0.08s)
Where?
https://github.com/FerretDB/FerretDB/blob/main/integration/query_projection_compat_test.go
https://github.com/FerretDB/FerretDB/blob/main/internal/handlers/common/projection.go
Definition of Done
- all handlers updated;
- integration/compatibility tests added/updated;
- spot refactorings done;