fix delegation test

Author: apcha-oai

openai-java-core/src/main/kotlin/com/openai/models/chat/completions/StructuredChatCompletionCreateParams.kt

@@ -9,6 +9,7 @@ import com.openai.core.http.QueryParams
 import com.openai.core.responseFormatFromClass
 import com.openai.models.ChatModel
 import com.openai.models.ReasoningEffort
+import com.openai.models.ResponseFormatJsonSchema
 import java.util.Objects
 import java.util.Optional
 
@@ -442,6 +443,11 @@ internal constructor(
             paramsBuilder.safetyIdentifier(safetyIdentifier)
         }
 
+        /** @see ChatCompletionCreateParams.Builder.jsonSchemaResponseFormat */
+        fun jsonSchemaResponseFormat(jsonSchema: ResponseFormatJsonSchema.JsonSchema) = apply {
+            paramsBuilder.jsonSchemaResponseFormat(jsonSchema)
+        }
+
         /**
          * Sets the response format to a JSON schema derived from the structure of the given class.
          *

openai-java-core/src/test/kotlin/com/openai/models/chat/completions/StructuredChatCompletionCreateParamsTest.kt

@@ -27,6 +27,7 @@ import com.openai.core.http.QueryParams
 import com.openai.core.responseFormatFromClass
 import com.openai.models.ChatModel
 import com.openai.models.FunctionDefinition
+import com.openai.models.ResponseFormatJsonSchema
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.params.ParameterizedTest
 import org.junit.jupiter.params.provider.MethodSource
@@ -118,6 +119,8 @@ internal class StructuredChatCompletionCreateParamsTest {
             ChatCompletionCustomTool.Custom.builder().name(STRING).build()
         private val FUNCTION_TOOL =
             ChatCompletionFunctionTool.builder().function(FUNCTION_DEFINITION).build()
+        private val RESPONSE_FORMAT_JSON_SCHEMA =
+            ResponseFormatJsonSchema.JsonSchema.builder().name("json_schema").build()
         private val ALLOWED_TOOL_CHOICE =
             ChatCompletionAllowedToolChoice.builder()
                 .allowedTools(
@@ -224,6 +227,7 @@ internal class StructuredChatCompletionCreateParamsTest {
                 DelegationWriteTestCase("reasoningEffort", NULLABLE),
                 DelegationWriteTestCase("reasoningEffort", OPTIONAL),
                 DelegationWriteTestCase("reasoningEffort", JSON_FIELD),
+                DelegationWriteTestCase("jsonSchemaResponseFormat", RESPONSE_FORMAT_JSON_SCHEMA),
                 // `responseFormat()` is a special case and has its own unit test.
                 DelegationWriteTestCase("safetyIdentifier", STRING),
                 DelegationWriteTestCase("safetyIdentifier", JSON_FIELD),