Fix FunctionCallbackKotlinIT.kt

 - Update to use ToolCallingChatOptions as functionOptions

Author: ilayaperumalg

spring-ai-spring-boot-autoconfigure/src/test/kotlin/org/springframework/ai/autoconfigure/ollama/tool/FunctionCallbackKotlinIT.kt

@@ -20,19 +20,18 @@ import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.BeforeAll
 import org.junit.jupiter.api.Test
 import org.slf4j.LoggerFactory
-
 import org.springframework.ai.autoconfigure.ollama.BaseOllamaIT
 import org.springframework.ai.autoconfigure.ollama.OllamaAutoConfiguration
 import org.springframework.ai.chat.messages.UserMessage
 import org.springframework.ai.chat.prompt.Prompt
-import org.springframework.ai.model.function.FunctionCallback
-import org.springframework.ai.model.function.FunctionCallingOptions
+import org.springframework.ai.model.tool.ToolCallingChatOptions
 import org.springframework.ai.ollama.OllamaChatModel
-import org.springframework.ai.ollama.api.OllamaOptions
 import org.springframework.boot.autoconfigure.AutoConfigurations
 import org.springframework.boot.test.context.runner.ApplicationContextRunner
 import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
+import org.springframework.context.annotation.Description
+
 
 class FunctionCallbackKotlinIT : BaseOllamaIT() {
 
@@ -68,8 +67,10 @@ class FunctionCallbackKotlinIT : BaseOllamaIT() {
 			val userMessage = UserMessage(
 				"What are the weather conditions in San Francisco, Tokyo, and Paris? Find the temperature in Celsius for each of the three locations.")
 
+			val functionOptions = ToolCallingChatOptions.builder().toolNames("weatherInfo").build()
+
 			val response = chatModel
-					.call(Prompt(listOf(userMessage), OllamaOptions.builder().function("WeatherInfo").build()))
+					.call(Prompt(listOf(userMessage), functionOptions))
 
 			logger.info("Response: $response")
 
@@ -87,9 +88,7 @@ class FunctionCallbackKotlinIT : BaseOllamaIT() {
 			val userMessage = UserMessage(
 				"What are the weather conditions in San Francisco, Tokyo, and Paris? Find the temperature in Celsius for each of the three locations.")
 
-			val functionOptions = FunctionCallingOptions.builder()
-				.function("WeatherInfo")
-				.build()
+			val functionOptions = ToolCallingChatOptions.builder().toolNames("weatherInfo").build()
 
 			val response = chatModel.call(Prompt(listOf(userMessage), functionOptions));
 			val output = response.getResult().output.text
@@ -103,14 +102,9 @@ class FunctionCallbackKotlinIT : BaseOllamaIT() {
 	open class Config {
 
 		@Bean
-		open fun weatherFunctionInfo(): FunctionCallback {
-			return FunctionCallback.builder()
-				.function("WeatherInfo", MockKotlinWeatherService())
-				.description(
-					"Find the weather conditions, forecasts, and temperatures for a location, like a city or state."
-				)
-				.inputType(KotlinRequest::class.java)
-				.build()
+		@Description("Find the weather conditions, forecasts, and temperatures for a location, like a city or state.")
+		open fun weatherInfo(): Function1<KotlinRequest, KotlinResponse> {
+			return MockKotlinWeatherService()
 		}
 
 	}