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Support for sparse collections in query params #1513
base: series/0.19
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Support for sparse collections in query params #1513
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import smithy4s.example.{ServiceWithSparseQueryParams, SparseQueryOutput} | ||
import weaver._ | ||
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object SparseQueryParametersSuite extends SimpleIOSuite with CirceInstances { |
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I'd rather not have a bespoke http4s test for this. I'd rather the test was encoded as a compliance test in alloy instead, but that could happen in later PR
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I tried adding a compliance test in disneystreaming/alloy#172 , but for some reason that I can't comprehend it fails:
[info] [http4s] smithy4s.http4s.SimpleRestJsonComplianceSuite
...
[info] [http4s] + alloy.test#SparseQueryParam(client|Request): SparseQueryParam 676ms
[info] [http4s] - alloy.test#SparseQueryParam(server|Request): SparseQueryParam 202ms
[info] [http4s] *************FAILURES**************
[info] [http4s] smithy4s.http4s.SimpleRestJsonComplianceSuite
[error] [http4s] - alloy.test#SparseQueryParam(server|Request): SparseQueryParam 202ms
[error] [http4s] the result value: Array(List(Some(value = "bar"), Some(value = ""), Some(value = "baz"), Some(value = ""))) was not equal to the expected TestCase value Array(List(Some(value = "bar"), None, Some(value = "baz"), Some(value = ""))). (modules/tests/src/smithy4s/tests/ProtocolComplianceSuite.scala:183)
The client part passes, but the server one doesn't and I just can't wrap my head around why 🤯
val expectedQueryParams: Vector[(String, Option[String])] = | ||
parseQueryParams(testCase.queryParams) | ||
.foldLeft[ListMap[String, Vector[Option[String]]]](ListMap.empty) { | ||
case (acc, (k, v)) => | ||
acc.get(k) match { | ||
case Some(value) => acc + (k -> (value :+ v)) | ||
case None => acc + (k -> Vector(v)) | ||
} | ||
} | ||
.map { | ||
// FIXME: replacing single query parameter without value with empty string | ||
// to make sure that https://github.com/smithy-lang/smithy/blob/6c42bc9d60a681e63c66f4cde33d7a189a1ff9a6/smithy-aws-protocol-tests/model/restJson1/http-query.smithy#L476-L489 | ||
// passes. | ||
// Previously this was done in `parseQueryParams`. | ||
case (k, Vector(None)) => k -> Vector(Some("")) | ||
case kv => kv | ||
} | ||
.toVector | ||
.flatMap { case (k, v) => | ||
v.map(k -> _) | ||
} | ||
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This is a bit of a hack to get the compliance tests passing, but will require some discussion.
As far as I can tell, this aws restJson compliance test expects a query of example.com/?foo
to be treated as foo=Some("")
instead of foo=None
which is a bit problematic for this change.
Closes #1490
PR Checklist (not all items are relevant to all PRs)