Merge branch '8784-dir-listings'

[arvados.git] / services / nodemanager / tests / testutil.py

diff --git a/services/nodemanager/tests/testutil.py b/services/nodemanager/tests/testutil.py
index b9e7beabb5ca1237cc1b64619c9a412872c2923b..0a483709adf5b69a8fd13647f9e9bd866fa836cf 100644 (file)
--- a/services/nodemanager/tests/testutil.py
+++ b/services/nodemanager/tests/testutil.py
@@ -1,13 +1,19 @@
 #!/usr/bin/env python
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
 
 from __future__ import absolute_import, print_function
 
+import contextlib
 import datetime
+import mock
+import pykka
+import sys
 import threading
 import time
 
-import mock
-import pykka
+import libcloud.common.types as cloud_types
 
 from . import pykka_timeout
 
@@ -54,6 +60,17 @@ def cloud_node_fqdn(node):
 def ip_address_mock(last_octet):
     return '10.20.30.{}'.format(last_octet)
 
+@contextlib.contextmanager
+def redirected_streams(stdout=None, stderr=None):
+    orig_stdout, sys.stdout = sys.stdout, stdout or sys.stdout
+    orig_stderr, sys.stderr = sys.stderr, stderr or sys.stderr
+    try:
+        yield
+    finally:
+        sys.stdout = orig_stdout
+        sys.stderr = orig_stderr
+
+
 class MockShutdownTimer(object):
     def _set_state(self, is_open, next_opening):
         self.window_open = lambda: is_open
@@ -65,7 +82,8 @@ class MockSize(object):
         self.id = 'z{}.test'.format(factor)
         self.name = self.id
         self.ram = 128 * factor
-        self.disk = 100 * factor
+        self.disk = factor   # GB
+        self.scratch = 1000 * factor # MB
         self.bandwidth = 16 * factor
         self.price = float(factor)
         self.extra = {}
@@ -118,6 +136,13 @@ class ActorTestMixin(object):
             if result is not unassigned:
                 return result
 
+    def busywait(self, f):
+        n = 0
+        while not f() and n < 10:
+            time.sleep(.1)
+            n += 1
+        self.assertTrue(f())
+
 
 class DriverTestMixin(object):
     def setUp(self):
@@ -142,6 +167,44 @@ class DriverTestMixin(object):
             self.assertTrue(self.driver_mock.called)
             self.assertIs(driver.real, driver_mock2)
 
+    def test_create_can_find_node_after_timeout(self, create_kwargs={}, node_extra={}):
+        driver = self.new_driver(create_kwargs=create_kwargs)
+        arv_node = arvados_node_mock()
+        cloud_node = cloud_node_mock(**node_extra)
+        cloud_node.name = driver.create_cloud_name(arv_node)
+        create_method = self.driver_mock().create_node
+        create_method.side_effect = cloud_types.LibcloudError("fake timeout")
+        list_method = self.driver_mock().list_nodes
+        list_method.return_value = [cloud_node]
+        actual = driver.create_node(MockSize(1), arv_node)
+        self.assertIs(cloud_node, actual)
+
+    def test_create_can_raise_exception_after_timeout(self):
+        driver = self.new_driver()
+        arv_node = arvados_node_mock()
+        create_method = self.driver_mock().create_node
+        create_method.side_effect = cloud_types.LibcloudError("fake timeout")
+        list_method = self.driver_mock().list_nodes
+        list_method.return_value = []
+        with self.assertRaises(cloud_types.LibcloudError) as exc_test:
+            driver.create_node(MockSize(1), arv_node)
+        self.assertIs(create_method.side_effect, exc_test.exception)
+
+    def check_node_found_after_timeout_has_fixed_size(self, size, cloud_node,
+                                                      create_kwargs={}):
+        # This method needs to be called explicitly by driver test suites
+        # that need it.
+        self.driver_mock().list_sizes.return_value = [size]
+        driver = self.new_driver(create_kwargs=create_kwargs)
+        arv_node = arvados_node_mock()
+        cloud_node.name = driver.create_cloud_name(arv_node)
+        create_method = self.driver_mock().create_node
+        create_method.side_effect = cloud_types.LibcloudError("fake timeout")
+        self.driver_mock().list_nodes.return_value = [cloud_node]
+        actual = driver.create_node(size, arv_node)
+        self.assertIs(size, actual.size)
+
+
 class RemotePollLoopActorTestMixin(ActorTestMixin):
     def build_monitor(self, *args, **kwargs):
         self.timer = mock.MagicMock(name='timer_mock')
@@ -150,7 +213,9 @@ class RemotePollLoopActorTestMixin(ActorTestMixin):
         self.monitor = self.TEST_CLASS.start(
             self.client, self.timer, *args, **kwargs).proxy()
 
-def cloud_node_mock(node_num=99, size=MockSize(1), **extra):
+def cloud_node_mock(node_num=99, size=None, **extra):
+    if size is None:
+        size = MockSize(node_num)
     node = mock.NonCallableMagicMock(
         ['id', 'name', 'state', 'public_ips', 'private_ips', 'driver', 'size',
          'image', 'extra'],