fix: Don't generate smoke tests for any streaming operation (#1001)

Author: jbelkins

smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/integration/SmokeTestGenerator.kt

@@ -1,17 +1,22 @@
 package software.amazon.smithy.swift.codegen.integration
 
 import software.amazon.smithy.model.node.ObjectNode
+import software.amazon.smithy.model.shapes.MemberShape
 import software.amazon.smithy.model.shapes.ShapeId
+import software.amazon.smithy.model.shapes.StructureShape
+import software.amazon.smithy.model.traits.StreamingTrait
 import software.amazon.smithy.smoketests.traits.SmokeTestCase
 import software.amazon.smithy.smoketests.traits.SmokeTestsTrait
 import software.amazon.smithy.swift.codegen.ShapeValueGenerator
 import software.amazon.smithy.swift.codegen.SwiftWriter
+import software.amazon.smithy.swift.codegen.model.expectShape
 import software.amazon.smithy.swift.codegen.model.expectTrait
 import software.amazon.smithy.swift.codegen.model.hasTrait
 import software.amazon.smithy.swift.codegen.swiftmodules.ClientRuntimeTypes
 import software.amazon.smithy.swift.codegen.swiftmodules.FoundationTypes
 import software.amazon.smithy.swift.codegen.utils.toLowerCamelCase
 import software.amazon.smithy.swift.codegen.utils.toUpperCamelCase
+import kotlin.jvm.optionals.getOrNull
 
 open class SmokeTestGenerator(
     private val ctx: ProtocolGenerator.GenerationContext,
@@ -55,7 +60,13 @@ open class SmokeTestGenerator(
     private fun getOperationShapeIdToTestCasesMapping(serviceName: String): Map<ShapeId, List<SmokeTestCase>> {
         val operationShapeIdToTestCases = mutableMapOf<ShapeId, List<SmokeTestCase>>()
         ctx.model.operationShapes.forEach { op ->
-            if (ctx.model.expectShape(op.id).hasTrait<SmokeTestsTrait>()) {
+            val input = op.input.getOrNull()?.let { ctx.model.expectShape<StructureShape>(it) }
+            val output = op.output.getOrNull()?.let { ctx.model.expectShape<StructureShape>(it) }
+            val operationHasEventStreams =
+                ((input?.members() ?: listOf<MemberShape>()) + (output?.members() ?: listOf())).any { member ->
+                    ctx.model.expectShape(member.target).hasTrait<StreamingTrait>()
+                }
+            if (op.hasTrait<SmokeTestsTrait>() && !operationHasEventStreams) {
                 val testCases = mutableListOf<SmokeTestCase>()
                 val smokeTestTrait = ctx.model.expectShape(op.id).expectTrait<SmokeTestsTrait>()
                 smokeTestTrait.testCases.forEach { testCase ->