X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/92d7a504629d848927d5334b0a801cd3993a585b..609646134bcd8fc3a7fd500848220741ecc4a9d2:/services/nodemanager/tests/testutil.py

diff --git a/services/nodemanager/tests/testutil.py b/services/nodemanager/tests/testutil.py
index b376ca792a..15337c4120 100644
--- a/services/nodemanager/tests/testutil.py
+++ b/services/nodemanager/tests/testutil.py
@@ -2,13 +2,15 @@
 
 from __future__ import absolute_import, print_function
 
+import contextlib
 import datetime
+import mock
+import pykka
+import sys
 import threading
 import time
 
 import libcloud.common.types as cloud_types
-import mock
-import pykka
 
 from . import pykka_timeout
 
@@ -55,6 +57,17 @@ 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
@@ -119,6 +132,13 @@ 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):
@@ -143,10 +163,10 @@ class DriverTestMixin(object):
             self.assertTrue(self.driver_mock.called)
             self.assertIs(driver.real, driver_mock2)
 
-    def test_create_can_find_node_after_timeout(self):
-        driver = self.new_driver()
+    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()
+        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")
@@ -166,6 +186,20 @@ class DriverTestMixin(object):
             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):