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# Copyright 2018 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import json
import os
import unittest
from unittest import mock
from .config_exception import ConfigException
from .exec_provider import ExecProvider
from .kube_config import ConfigNode
class ExecProviderTest(unittest.TestCase):
def setUp(self):
self.input_ok = ConfigNode('test', {
'command': 'aws-iam-authenticator',
'args': ['token', '-i', 'dummy'],
'apiVersion': 'client.authentication.k8s.io/v1beta1',
'env': None
})
self.input_with_cluster = ConfigNode('test', {
'command': 'aws-iam-authenticator',
'args': ['token', '-i', 'dummy'],
'apiVersion': 'client.authentication.k8s.io/v1beta1',
'provideClusterInfo': True,
'env': None
})
self.output_ok = """
{
"apiVersion": "client.authentication.k8s.io/v1beta1",
"kind": "ExecCredential",
"status": {
"token": "dummy"
}
}
"""
def test_missing_input_keys(self):
exec_configs = [ConfigNode('test1', {}),
ConfigNode('test2', {'command': ''}),
ConfigNode('test3', {'apiVersion': ''})]
for exec_config in exec_configs:
with self.assertRaises(ConfigException) as context:
ExecProvider(exec_config, None)
self.assertIn('exec: malformed request. missing key',
context.exception.args[0])
@mock.patch('subprocess.Popen')
def test_error_code_returned(self, mock):
instance = mock.return_value
instance.wait.return_value = 1
instance.communicate.return_value = ('', '')
with self.assertRaises(ConfigException) as context:
ep = ExecProvider(self.input_ok, None)
ep.run()
self.assertIn('exec: process returned %d' %
instance.wait.return_value, context.exception.args[0])
@mock.patch('subprocess.Popen')
def test_nonjson_output_returned(self, mock):
instance = mock.return_value
instance.wait.return_value = 0
instance.communicate.return_value = ('', '')
with self.assertRaises(ConfigException) as context:
ep = ExecProvider(self.input_ok, None)
ep.run()
self.assertIn('exec: failed to decode process output',
context.exception.args[0])
@mock.patch('subprocess.Popen')
def test_missing_output_keys(self, mock):
instance = mock.return_value
instance.wait.return_value = 0
outputs = [
"""
{
"kind": "ExecCredential",
"status": {
"token": "dummy"
}
}
""", """
{
"apiVersion": "client.authentication.k8s.io/v1beta1",
"status": {
"token": "dummy"
}
}
""", """
{
"apiVersion": "client.authentication.k8s.io/v1beta1",
"kind": "ExecCredential"
}
"""
]
for output in outputs:
instance.communicate.return_value = (output, '')
with self.assertRaises(ConfigException) as context:
ep = ExecProvider(self.input_ok, None)
ep.run()
self.assertIn('exec: malformed response. missing key',
context.exception.args[0])
@mock.patch('subprocess.Popen')
def test_mismatched_api_version(self, mock):
instance = mock.return_value
instance.wait.return_value = 0
wrong_api_version = 'client.authentication.k8s.io/v1'
output = """
{
"apiVersion": "%s",
"kind": "ExecCredential",
"status": {
"token": "dummy"
}
}
""" % wrong_api_version
instance.communicate.return_value = (output, '')
with self.assertRaises(ConfigException) as context:
ep = ExecProvider(self.input_ok, None)
ep.run()
self.assertIn(
'exec: plugin api version %s does not match' %
wrong_api_version,
context.exception.args[0])
@mock.patch('subprocess.Popen')
def test_ok_01(self, mock):
instance = mock.return_value
instance.wait.return_value = 0
instance.communicate.return_value = (self.output_ok, '')
ep = ExecProvider(self.input_ok, None)
result = ep.run()
self.assertTrue(isinstance(result, dict))
self.assertTrue('token' in result)
@mock.patch('subprocess.Popen')
def test_run_in_dir(self, mock):
instance = mock.return_value
instance.wait.return_value = 0
instance.communicate.return_value = (self.output_ok, '')
ep = ExecProvider(self.input_ok, '/some/directory')
ep.run()
self.assertEqual(mock.call_args[1]['cwd'], '/some/directory')
@mock.patch('subprocess.Popen')
def test_ok_no_console_attached(self, mock):
instance = mock.return_value
instance.wait.return_value = 0
instance.communicate.return_value = (self.output_ok, '')
mock_stdout = unittest.mock.patch(
'sys.stdout', new=None) # Simulate detached console
with mock_stdout:
ep = ExecProvider(self.input_ok, None)
result = ep.run()
self.assertTrue(isinstance(result, dict))
self.assertTrue('token' in result)
@mock.patch('subprocess.Popen')
def test_with_cluster_info(self, mock):
instance = mock.return_value
instance.wait.return_value = 0
instance.communicate.return_value = (self.output_ok, '')
ep = ExecProvider(self.input_with_cluster, None, ConfigNode("cluster", {'server': 'name.company.com'}))
result = ep.run()
self.assertTrue(isinstance(result, dict))
self.assertTrue('token' in result)
obj = json.loads(mock.call_args.kwargs['env']['KUBERNETES_EXEC_INFO'])
self.assertEqual(obj['spec']['cluster']['server'], 'name.company.com')
@mock.patch("subprocess.Popen")
def test_with_cluster_info_from_exec_extension(self, mock):
instance = mock.return_value
instance.wait.return_value = 0
instance.communicate.return_value = (self.output_ok, "")
ep = ExecProvider(
self.input_with_cluster,
None,
ConfigNode(
"cluster",
{
"server": "name.company.com",
"extensions": [
{
"name": "client.authentication.k8s.io/exec",
"extension": {
"namespace": "myproject",
"name": "mycluster",
},
},
],
},
),
)
result = ep.run()
self.assertTrue(isinstance(result, dict))
self.assertTrue("token" in result)
obj = json.loads(mock.call_args.kwargs["env"]["KUBERNETES_EXEC_INFO"])
self.assertEqual(obj["spec"]["cluster"]["server"], "name.company.com")
self.assertEqual(obj["spec"]["cluster"]["config"]["namespace"], "myproject")
self.assertEqual(obj["spec"]["cluster"]["config"]["name"], "mycluster")
if __name__ == '__main__':
unittest.main()
|
