add OpenAiApi tests

models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiApi.java

@@ -66,7 +66,17 @@ public class OpenAiApi {
 	 * @param openAiToken OpenAI apiKey.
 	 */
 	public OpenAiApi(String openAiToken) {
-		this(DEFAULT_BASE_URL, openAiToken, RestClient.builder());
+		this(DEFAULT_BASE_URL, openAiToken);
+	}
+
+	/**
+	 * Create a new chat completion api.
+	 *
+	 * @param baseUrl api base URL.
+	 * @param openAiToken OpenAI apiKey.
+	 */
+	public OpenAiApi(String baseUrl, String openAiToken) {
+		this(baseUrl, openAiToken, RestClient.builder());
 	}
 
 	/**

models/spring-ai-openai/src/test/java/org/springframework/ai/openai/chat/api/OpenAiApiIT.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.ai.openai.chat.api;
+
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable;
+import reactor.core.publisher.Flux;
+
+import org.springframework.ai.openai.api.OpenAiApi;
+import org.springframework.ai.openai.api.OpenAiApi.ChatCompletion;
+import org.springframework.ai.openai.api.OpenAiApi.ChatCompletionChunk;
+import org.springframework.ai.openai.api.OpenAiApi.ChatCompletionMessage;
+import org.springframework.ai.openai.api.OpenAiApi.ChatCompletionMessage.Role;
+import org.springframework.ai.openai.api.OpenAiApi.ChatCompletionRequest;
+import org.springframework.ai.openai.api.OpenAiApi.Embedding;
+import org.springframework.ai.openai.api.OpenAiApi.EmbeddingList;
+import org.springframework.http.ResponseEntity;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Christian Tzolov
+ */
+@EnabledIfEnvironmentVariable(named = "OPENAI_API_KEY", matches = ".+")
+public class OpenAiApiIT {
+
+	OpenAiApi openAiApi = new OpenAiApi(System.getenv("OPENAI_API_KEY"));
+
+	@Test
+	void chatCompletionEntity() {
+		ChatCompletionMessage chatCompletionMessage = new ChatCompletionMessage("Hello world", Role.USER);
+		ResponseEntity<ChatCompletion> response = openAiApi.chatCompletionEntity(
+				new ChatCompletionRequest(List.of(chatCompletionMessage), "gpt-3.5-turbo", 0.8f, false));
+
+		assertThat(response).isNotNull();
+		assertThat(response.getBody()).isNotNull();
+	}
+
+	@Test
+	void chatCompletionStream() {
+		ChatCompletionMessage chatCompletionMessage = new ChatCompletionMessage("Hello world", Role.USER);
+		Flux<ChatCompletionChunk> response = openAiApi.chatCompletionStream(
+				new ChatCompletionRequest(List.of(chatCompletionMessage), "gpt-3.5-turbo", 0.8f, true));
+
+		assertThat(response).isNotNull();
+		assertThat(response.collectList().block()).isNotNull();
+	}
+
+	@Test
+	void embeddings() {
+		ResponseEntity<EmbeddingList<Embedding>> response = openAiApi
+			.embeddings(new OpenAiApi.EmbeddingRequest<String>("Hello world"));
+
+		assertThat(response).isNotNull();
+		assertThat(response.getBody().data()).hasSize(1);
+		assertThat(response.getBody().data().get(0).embedding()).hasSize(1536);
+	}
+
+}

models/spring-ai-openai/src/test/java/org/springframework/ai/openai/chat/api/RestClientBuilderTests.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.ai.openai.chat.api;
+
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
+import org.springframework.http.client.SimpleClientHttpRequestFactory;
+import org.springframework.web.client.RestClient;
+import org.springframework.web.client.RestClient.Builder;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.DefaultUriBuilderFactory;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Christian Tzolov
+ */
+public class RestClientBuilderTests {
+
+	public static final String BASE_URL = "https://dog.ceo";
+
+	@Test
+	public void test1() {
+		test(RestClient.builder(), BASE_URL);
+	}
+
+	@Test
+	@Disabled("RestClient.builder(restTemplate) bug: https://github.com/spring-projects/spring-framework/issues/32180")
+	public void test2() {
+		RestTemplate restTemplate = new RestTemplate();
+		test(RestClient.builder(restTemplate), BASE_URL);
+	}
+
+	@Test
+	public void test3() {
+		RestTemplate restTemplate = new RestTemplate();
+		restTemplate.setUriTemplateHandler(new DefaultUriBuilderFactory(BASE_URL));
+		test(RestClient.builder(restTemplate), BASE_URL);
+	}
+
+	@Test
+	public void test4() {
+		var clientHttpRequestFactory = new SimpleClientHttpRequestFactory();
+		clientHttpRequestFactory.setConnectTimeout(5000);
+		// clientHttpRequestFactory.setProxy(new Proxy(Type.HTTP,
+		// InetSocketAddress.createUnresolved("localhost", 80)));
+		RestClient.Builder builder = RestClient.builder().requestFactory(clientHttpRequestFactory);
+		test(builder, BASE_URL);
+	}
+
+	private void test(Builder restClientBuilder, String baseUrl) {
+		var restClient = restClientBuilder.baseUrl(baseUrl).build();
+		String res = restClient.get().uri("/api/breeds/list/all").retrieve().body(String.class);
+
+		assertThat(res).isNotNull();
+	}
+
+}