fix: user-agent should use identifier/version (#1425)

* fix: user-agent should use identifier/version

* test: inline USER_AGENT_SUFFIX in test

Author: chingor13

google-api-client/src/main/java/com/google/api/client/googleapis/services/AbstractGoogleClientRequest.java

@@ -126,9 +126,10 @@ protected AbstractGoogleClientRequest(AbstractGoogleClient abstractGoogleClient,
     // application name
     String applicationName = abstractGoogleClient.getApplicationName();
     if (applicationName != null) {
-      requestHeaders.setUserAgent(applicationName + " " + USER_AGENT_SUFFIX);
+      requestHeaders.setUserAgent(applicationName + " " + USER_AGENT_SUFFIX + "/"
+              + GoogleUtils.VERSION);
     } else {
-      requestHeaders.setUserAgent(USER_AGENT_SUFFIX);
+      requestHeaders.setUserAgent(USER_AGENT_SUFFIX + "/" + GoogleUtils.VERSION);
     }
     // Set the header for the Api Client version (Java and OS version)
     requestHeaders.set(API_VERSION_HEADER, ApiClientVersion.DEFAULT_VERSION);

google-api-client/src/test/java/com/google/api/client/googleapis/services/AbstractGoogleClientRequestTest.java

@@ -12,6 +12,7 @@
 
 package com.google.api.client.googleapis.services;
 
+import com.google.api.client.googleapis.GoogleUtils;
 import com.google.api.client.googleapis.services.AbstractGoogleClientRequest.ApiClientVersion;
 import com.google.api.client.googleapis.testing.services.MockGoogleClient;
 import com.google.api.client.googleapis.testing.services.MockGoogleClientRequest;
@@ -203,7 +204,7 @@ public void testUserAgentSuffix() throws Exception {
     // Specify an Application Name.
     String applicationName = "Test Application";
     transport.expectedUserAgent = applicationName + " "
-        + AbstractGoogleClientRequest.USER_AGENT_SUFFIX + " "
+        + "Google-API-Java-Client/" + GoogleUtils.VERSION + " "
         + HttpRequest.USER_AGENT_SUFFIX;
     MockGoogleClient client = new MockGoogleClient.Builder(
         transport, ROOT_URL, SERVICE_PATH, JSON_OBJECT_PARSER, null).setApplicationName(
@@ -215,7 +216,8 @@ public void testUserAgentSuffix() throws Exception {
 
   public void testUserAgent() throws IOException {
     AssertUserAgentTransport transport = new AssertUserAgentTransport();
-    transport.expectedUserAgent = AbstractGoogleClientRequest.USER_AGENT_SUFFIX + " " + HttpRequest.USER_AGENT_SUFFIX;
+    transport.expectedUserAgent = "Google-API-Java-Client/" + GoogleUtils.VERSION + " "
+        + HttpRequest.USER_AGENT_SUFFIX;
     // Don't specify an Application Name.
     MockGoogleClient client = new MockGoogleClient.Builder(
         transport, ROOT_URL, SERVICE_PATH, JSON_OBJECT_PARSER, null).build();