wrote system test for subnetwork

system-test/compute.js

@@ -1129,6 +1129,65 @@ describe('Compute', function() {
     });
   });
 
+  describe('subnetworks', function() {
+    var SUBNETWORK_NAME = generateName('subnetwork');
+    var subnetwork = region.subnetwork(SUBNETWORK_NAME);
+
+    var NETWORK_NAME = generateName('network');
+    var network = compute.network(NETWORK_NAME);
+
+    var CONFIG = {
+      autoCreateSubnetworks: false
+    };
+
+
+    let SUBNETWORK_CONFIG = {
+      network: 'global/networks/' + NETWORK_NAME,
+      ipCidrRange: '10.0.1.0/24'
+    };
+
+    before(function(done) {
+      async.series([
+        create(network, CONFIG),
+        create(subnetwork, SUBNETWORK_CONFIG)
+      ], done);
+    });
+
+    it('should have created the subnetwork', function(done) {
+      subnetwork.getMetadata(function(err, metadata) {
+        assert.ifError(err);
+        assert.strictEqual(metadata.name, SUBNETWORK_NAME);
+        done();
+      });
+    });
+
+    it('should get a list of subnetworks', function(done) {
+      compute.getSubnetworks(function(err, subnetworks) {
+        assert.ifError(err);
+        assert(subnetworks.length > 0);
+        done();
+      });
+    });
+
+    it('should get a list of subnetworks in stream mode', function(done) {
+      var resultsMatched = 0;
+
+      compute.getSubnetworks()
+        .on('error', done)
+        .on('data', function() {
+          resultsMatched++;
+        })
+        .on('end', function() {
+          assert(resultsMatched > 0);
+          done();
+        });
+    });
+
+    it('should access a subnetwork through a Region', function(done) {
+      region.subnetwork(SUBNETWORK_NAME).getMetadata(done);
+    });
+  });
+
   function generateName(customPrefix) {
     return TESTS_PREFIX + customPrefix + '-' + Date.now();
   }
@@ -1154,6 +1213,7 @@ describe('Compute', function() {
       'getDisks',
       'getInstanceGroups',
       'getFirewalls',
+      'getSubnetworks',
       'getHealthChecks',
       'getNetworks',
       'getRules',