Fixed some issues with the tests

src/node/interop/interop_client.js

@@ -44,8 +44,14 @@ var GoogleAuth = require('google-auth-library');
 
 var assert = require('assert');
 
-var SERVICE_ACCOUNT_EMAIL = require(
+var SERVICE_ACCOUNT_EMAIL;
+try {
+  SERVICE_ACCOUNT_EMAIL = require(
       process.env.GOOGLE_APPLICATION_CREDENTIALS).client_email;
+} catch (e) {
+  // This will cause the tests to fail if they need that string
+  SERVICE_ACCOUNT_EMAIL = null;
+}
 
 var ECHO_INITIAL_KEY = 'x-grpc-test-echo-initial';
 var ECHO_TRAILING_KEY = 'x-grpc-test-echo-trailing-bin';
@@ -346,20 +352,20 @@ function statusCodeAndMessage(client, done) {
   var arg = {
     response_status: {
       code: 2,
-      message: "test status message"
+      message: 'test status message'
     }
   };
   client.unaryCall(arg, function(err, resp) {
     assert(err);
     assert.strictEqual(err.code, 2);
-    assert.strictEqual(err.message, "test status message");
+    assert.strictEqual(err.message, 'test status message');
     done();
   });
   var duplex = client.fullDuplexCall();
   duplex.on('status', function(status) {
     assert(status);
     assert.strictEqual(status.code, 2);
-    assert.strictEqual(status.details, "test status message");
+    assert.strictEqual(status.details, 'test status message');
     done();
   });
   duplex.on('error', function(){});

src/node/test/async_test.js

@@ -57,7 +57,7 @@ describe('Async functionality', function() {
                                grpc.ServerCredentials.createInsecure());
     server.start();
     math_client = new math.Math('localhost:' + port_num,
-                                grpc.Credentials.createInsecure());
+                                grpc.credentials.createInsecure());
     done();
   });
   after(function() {

src/node/test/channel_test.js

@@ -149,7 +149,7 @@ describe('channel', function() {
     afterEach(function() {
       channel.close();
     });
-    it.only('should time out if called alone', function(done) {
+    it('should time out if called alone', function(done) {
       var old_state = channel.getConnectivityState();
       var deadline = new Date();
       deadline.setSeconds(deadline.getSeconds() + 1);

src/node/test/credentials_test.js

@@ -130,8 +130,8 @@ describe('client credentials', function() {
       callback(null, metadata);
     };
     var creds = grpc.credentials.createFromMetadataGenerator(metadataUpdater);
-    var combined_creds = grpc.credentials.combineCredentials(client_ssl_creds,
+    var combined_creds = grpc.credentials.combineChannelCredentials(
-                                                             creds);
+        client_ssl_creds, creds);
     var client = new Client('localhost:' + port, combined_creds,
                             client_options);
     var call = client.unary({}, function(err, data) {
@@ -150,8 +150,8 @@ describe('client credentials', function() {
       callback(null, metadata);
     };
     var creds = grpc.credentials.createFromMetadataGenerator(metadataUpdater);
-    var combined_creds = grpc.credentials.combineCredentials(client_ssl_creds,
+    var combined_creds = grpc.credentials.combineChannelCredentials(
-                                                             creds);
+        client_ssl_creds, creds);
     var client = new Client('localhost:' + port, combined_creds,
                             client_options);
     var call = client.unary({}, function(err, data) {
@@ -231,7 +231,7 @@ describe('client credentials', function() {
           updater_creds, alt_updater_creds);
       var call = client.unary({}, function(err, data) {
         assert.ifError(err);
-      }, null, {credentials: updater_creds});
+      }, null, {credentials: combined_updater});
       call.on('metadata', function(metadata) {
         assert.deepEqual(metadata.get('plugin_key'), ['plugin_value']);
         assert.deepEqual(metadata.get('other_plugin_key'),

src/node/test/interop_sanity_test.js

@@ -71,7 +71,7 @@ describe('Interop tests', function() {
     interop_client.runTest(port, name_override, 'server_streaming', true, true,
                            done);
   });
-  it('should pass ping_pong', function(done) {
+  it.only('should pass ping_pong', function(done) {
     interop_client.runTest(port, name_override, 'ping_pong', true, true, done);
   });
   it('should pass empty_stream', function(done) {