Fixed node mac distrib tests

tools/run_tests/distribtest_targets.py

@@ -106,14 +106,15 @@ class NodeDistribTest(object):
   """Tests Node package"""
 
   def __init__(self, platform, arch, docker_suffix, node_version):
-    self.name = 'node_npm_%s_%s_%s_%s' % (platform, arch,
+    self.name = 'node_npm_%s_%s_%s' % (platform, arch, node_version)
-                                          docker_suffix, node_version)
     self.platform = platform
     self.arch = arch
-    self.docker_suffix = docker_suffix
     self.node_version = node_version
     self.labels = ['distribtest', 'node', platform, arch,
                    docker_suffix, 'node-%s' % node_version]
+    if docker_suffix is not None:
+      self.name += '_%s' % docker_suffix
+      self.docker_suffix = docker_suffix
 
   def pre_build_jobspecs(self):
     return []
@@ -234,6 +235,11 @@ def targets():
           RubyDistribTest('linux', 'x64', 'ubuntu1504'),
           RubyDistribTest('linux', 'x64', 'ubuntu1510'),
           RubyDistribTest('linux', 'x64', 'ubuntu1604'),
+          NodeDistribTest('macos', 'x64', None, '0.10'),
+          NodeDistribTest('macos', 'x64', None, '0.12'),
+          NodeDistribTest('macos', 'x64', None, '3'),
+          NodeDistribTest('macos', 'x64', None, '4'),
+          NodeDistribTest('macos', 'x64', None, '5'),
           NodeDistribTest('linux', 'x86', 'jessie', '4')
           ] + [
             NodeDistribTest('linux', 'x64', os, version)