Adding SSH test cases

-tests for SSH connection

tests/test_ssh_check.py

@@ -0,0 +1,54 @@
+import unittest
+from tests.common import load_check
+from checks import AgentCheck
+
+
+
+class SshTestCase(unittest.TestCase):
+
+	def test_ssh(self):
+
+		config = {
+			'instances': [{
+				'host': 'sdf.org',
+			    'username': 'datadog01',
+			    'password': 'abcd',
+			    'sftp_check': False,
+			    'private_key_file': '',
+			    'add_missing_keys': True
+			},
+			{
+				'host': 'sdf.org',
+			    'username': 'wrongusername',
+			    'password': 'wrongpassword',
+			    'sftp_check': False,
+			    'private_key_file': '',
+			    'add_missing_keys': True
+			},
+			{
+				'host': 'wronghost',
+			    'username': 'datadog01',
+			    'password': 'abcd',
+			    'sftp_check': False,
+			    'private_key_file': '',
+			    'add_missing_keys': True
+			},
+			]
+		}
+
+		agentConfig = {}
+		self.check = load_check('ssh_check', config, agentConfig)
+
+		#Testing that connection will work
+		self.check.check(config['instances'][0])
+		service = self.check.get_service_checks()
+		self.assertEqual(service[0].get('status'), AgentCheck.OK)
+		self.assertEqual(service[0].get('message'), None)
+
+		#Testing that bad authentication will raise exception
+		self.assertRaises(Exception, self.check.check, config['instances'][1])
+		#Testing that bad hostname will raise exception
+		self.assertRaises(Exception, self.check.check, config['instances'][2])
+
+
+