#BAEL-9291: add test configuration and test class

Author: hmdrzsharifi

spring-ai-3/src/test/java/com/baeldung/springai/docker/modelrunner/ModelRunnerApplicationTest.java

@@ -0,0 +1,46 @@
+package com.baeldung.springai.docker.modelrunner;
+
+import static org.assertj.core.api.AssertionsForInterfaceTypes.assertThat;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.boot.test.web.server.LocalServerPort;
+import org.springframework.context.annotation.Import;
+import org.springframework.http.ResponseEntity;
+
+
+@Import(TestcontainersConfiguration.class)
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+class ModelRunnerApplicationTest {
+
+	@LocalServerPort
+	private int port;
+
+	@Autowired
+	private TestRestTemplate restTemplate;
+
+	private String baseUrl;
+
+	@BeforeEach
+	void setUp() {
+		baseUrl = "http://localhost:" + port;
+	}
+
+	@Test
+	void givenMessage_whenCallChatController_thenSuccess() {
+		// given
+		String userMessage = "Hello, how are you?";
+
+		// when
+		ResponseEntity<String> response = restTemplate.getForEntity(
+		  baseUrl + "/chat?message=" + userMessage, String.class);
+
+		// then
+		assertThat(response.getStatusCode().is2xxSuccessful()).isTrue();
+		assertThat(response.getBody()).isNotEmpty();
+	}
+
+}

spring-ai-3/src/test/java/com/baeldung/springai/docker/modelrunner/TestcontainersConfiguration.java

@@ -0,0 +1,24 @@
+package com.baeldung.springai.docker.modelrunner;
+
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.test.context.DynamicPropertyRegistrar;
+import org.testcontainers.containers.DockerModelRunnerContainer;
+
+@TestConfiguration(proxyBeanMethods = false)
+class TestcontainersConfiguration {
+
+    @Bean
+    DockerModelRunnerContainer socat() {
+        return new DockerModelRunnerContainer("alpine/socat:1.8.0.1");
+    }
+
+    @Bean
+    DynamicPropertyRegistrar properties(DockerModelRunnerContainer dmr) {
+        return (registrar) -> {
+          registrar.add("spring.ai.openai.base-url", dmr::getOpenAIEndpoint);
+          registrar.add("spring.ai.openai.api-key", () -> "test-api-key");
+          registrar.add("spring.ai.openai.chat.options.model", () -> "ai/gemma3");
+        };
+    }
+}