ChenSongJavaCoder
diff --git a/‎service/src/main/java/com/theokanning/openai/service/OpenAiService.java
Copy file name to clipboardExpand all lines: service/src/main/java/com/theokanning/openai/service/OpenAiService.java
+2Lines changed: 2 additions & 0 deletions b/‎service/src/main/java/com/theokanning/openai/service/OpenAiService.java
Copy file name to clipboardExpand all lines: service/src/main/java/com/theokanning/openai/service/OpenAiService.java
+2Lines changed: 2 additions & 0 deletions
diff --git a/‎service/src/test/java/com/theokanning/openai/service/OpenAiServiceTest.java
Copy file name to clipboardExpand all lines: service/src/test/java/com/theokanning/openai/service/OpenAiServiceTest.java
+6Lines changed: 6 additions & 0 deletions b/‎service/src/test/java/com/theokanning/openai/service/OpenAiServiceTest.java
Copy file name to clipboardExpand all lines: service/src/test/java/com/theokanning/openai/service/OpenAiServiceTest.java
+6Lines changed: 6 additions & 0 deletions
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.time.Duration;
 import java.util.List;
+import java.util.Objects;
 import java.util.concurrent.TimeUnit;
 
 public class OpenAiService {
@@ -232,6 +233,7 @@ public static <T> T execute(Single<T> apiCall) {
     }
 
     public static OpenAiApi buildApi(String token, Duration timeout) {
+        Objects.requireNonNull(token, "OpenAI token required");
         ObjectMapper mapper = defaultObjectMapper();
         OkHttpClient client = defaultClient(token, timeout);
         Retrofit retrofit = defaultRetrofit(client, mapper);
 
@@ -15,6 +15,12 @@
 
 public class OpenAiServiceTest {
 
+    @Test
+    void assertTokenNotNull() {
+        String token = null;
+        assertThrows(NullPointerException.class, () -> new OpenAiService(token));
+    }
+
     @Test
     void executeHappyPath() {
         CompletionResult expected = new CompletionResult();