added IT for ChatMemory with prototype scope

Author: dliubarskyi

langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withChatMemory/AiServiceWithChatMemoryProviderIT.java renamed to langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withChatMemory/AiServiceWithChatMemoryIT.java

@@ -8,7 +8,7 @@
 import static dev.langchain4j.service.spring.mode.ApiKeys.OPENAI_API_KEY;
 import static org.assertj.core.api.Assertions.assertThat;
 
-class AiServiceWithChatMemoryProviderIT {
+class AiServiceWithChatMemoryIT {
 
     ApplicationContextRunner contextRunner = new ApplicationContextRunner()
             .withConfiguration(AutoConfigurations.of(AiServicesAutoConfig.class));

langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withChatMemoryPrototype/AiServiceWithChatMemoryPrototype1.java

@@ -0,0 +1,9 @@
+package dev.langchain4j.service.spring.mode.automatic.withChatMemoryPrototype;
+
+import dev.langchain4j.service.spring.AiService;
+
+@AiService
+interface AiServiceWithChatMemoryPrototype1 {
+
+    String chat(String userMessage);
+}

langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withChatMemoryPrototype/AiServiceWithChatMemoryPrototype2.java

@@ -0,0 +1,9 @@
+package dev.langchain4j.service.spring.mode.automatic.withChatMemoryPrototype;
+
+import dev.langchain4j.service.spring.AiService;
+
+@AiService
+interface AiServiceWithChatMemoryPrototype2 {
+
+    String chat(String userMessage);
+}

langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withChatMemoryPrototype/AiServiceWithChatMemoryPrototypeApplication.java

@@ -0,0 +1,22 @@
+package dev.langchain4j.service.spring.mode.automatic.withChatMemoryPrototype;
+
+import dev.langchain4j.memory.ChatMemory;
+import dev.langchain4j.memory.chat.MessageWindowChatMemory;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Scope;
+
+@SpringBootApplication
+class AiServiceWithChatMemoryPrototypeApplication {
+
+    @Bean
+    @Scope("prototype")
+    ChatMemory chatMemory() {
+        return MessageWindowChatMemory.withMaxMessages(10);
+    }
+
+    public static void main(String[] args) {
+        SpringApplication.run(AiServiceWithChatMemoryPrototypeApplication.class, args);
+    }
+}

langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withChatMemoryPrototype/AiServiceWithChatMemoryPrototypeProviderIT.java

@@ -0,0 +1,45 @@
+package dev.langchain4j.service.spring.mode.automatic.withChatMemoryPrototype;
+
+import dev.langchain4j.service.spring.AiServicesAutoConfig;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+
+import static dev.langchain4j.service.spring.mode.ApiKeys.OPENAI_API_KEY;
+import static org.assertj.core.api.Assertions.assertThat;
+
+class AiServiceWithChatMemoryPrototypeProviderIT {
+
+    ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+            .withConfiguration(AutoConfigurations.of(AiServicesAutoConfig.class));
+
+    @Test
+    void should_create_AI_services_with_separate_chat_memories() {
+        contextRunner
+                .withPropertyValues(
+                        "langchain4j.open-ai.chat-model.api-key=" + OPENAI_API_KEY,
+                        "langchain4j.open-ai.chat-model.model-name=gpt-4o-mini",
+                        "langchain4j.open-ai.chat-model.temperature=0.0",
+                        "langchain4j.open-ai.chat-model.max-tokens=20"
+                )
+                .withUserConfiguration(AiServiceWithChatMemoryPrototypeApplication.class)
+                .run(context -> {
+
+                    // given
+                    AiServiceWithChatMemoryPrototype1 aiService1 = context.getBean(AiServiceWithChatMemoryPrototype1.class);
+                    aiService1.chat("My name is Klaus");
+                    // when
+                    String answer = aiService1.chat("What is my name?");
+                    // then
+                    assertThat(answer).containsIgnoringCase("Klaus");
+
+
+                    // given
+                    AiServiceWithChatMemoryPrototype2 aiService2 = context.getBean(AiServiceWithChatMemoryPrototype2.class);
+                    // when
+                    String answer2 = aiService2.chat("What is my name?");
+                    // then
+                    assertThat(answer2).doesNotContainIgnoringCase("Klaus");
+                });
+    }
+}