Fixes for ProFTPd test suite

!311 was merged a bit too fast. After test suite was repaired ( the test node was stuck updating the git repository ), [test](https://nexedi.erp5.net/test_result_module/20180507-19395E1F/2) was not passing on testnode, because path was too deep.

While debugging this, I realized this check was wrong, because supervisor [also append the pid](https://github.com/Supervisor/supervisor/blob/70720a0311d868fbf58a31cd26a7147921dcff29/supervisor/http.py#L564-L574) to this path, so the path is even longer. I just checked that we have room for 7 digit pids.

Because path was too long on test node, test now run with `SLAPOS_TEST_WORKING_DIR` set to a slightly shorter path that's enough for this case.

There are some other minor fixes, see individual commits.

/cc @Nicolas @luke @rafael 

/reviewed-on nexedi/slapos!325

software/erp5testnode/testsuite/proftpd/buildout.hash.cfg

@@ -15,6 +15,6 @@
 # not need these here).
 
 [template]
-filename = instance.cfg
-md5sum = 9b4cc727c43d0daaec5b01cf4b9f7a15
+filename = instance.cfg.in
+md5sum = 20c5afac025e97c2937852f4d84f7cd3
 

software/erp5testnode/testsuite/proftpd/instance.cfg → software/erp5testnode/testsuite/proftpd/instance.cfg.in

@@ -25,6 +25,7 @@ repository = ${slapos-repository:location}
 [create-directory]
 recipe = slapos.cookbook:mkdirectory
 bin = $${buildout:directory}/bin
+working-dir = $${buildout:directory}/tmp/
 
 [slapos-test-runner]
 recipe = slapos.cookbook:wrapper
@@ -40,3 +41,4 @@ environment =
   PATH=${buildout:bin-directory}:/usr/bin/:/bin/
   LOCAL_IPV4=$${slap-configuration:ipv4-random}
   GLOBAL_IPV6=$${slap-configuration:ipv6-random}
+  SLAPOS_TEST_WORKING_DIR=$${create-directory:working-dir}

software/erp5testnode/testsuite/proftpd/software.cfg

@@ -67,3 +67,7 @@ mode = 640
 slapos.test.proftpd =
 erp5.util =
 #erp5.util = 0.4.51
+
+pyasn1 = 0.4.2
+slapos.recipe.template = 4.3
+pysftp = 0.2.9

software/proftpd/test/utils.py

@@ -68,7 +68,14 @@ class SlapOSInstanceTestCase(unittest.TestCase):
 
   @classmethod
   def setUpClass(cls):
+    try:
+      cls._setUpClass()
+    except:
+      cls.stopSlapOSProcesses()
+      raise
 
+  @classmethod
+  def _setUpClass(cls):
     working_directory = os.environ.get(
         'SLAPOS_TEST_WORKING_DIR',
         os.path.join(os.path.dirname(__file__), '.slapos'))
@@ -76,8 +83,11 @@ class SlapOSInstanceTestCase(unittest.TestCase):
     # AF_UNIX path too long This `working_directory` should not be too deep.
     # Socket path is 108 char max on linux
     # https://github.com/torvalds/linux/blob/3848ec5/net/unix/af_unix.c#L234-L238
-    if len(working_directory + '/inst/supervisord.socket') > 108:
-      raise RuntimeError('working directory too deep, try setting SLAPOS_TEST_WORKING_DIR')
+    # Supervisord socket name contains the pid number, which is why we add
+    # .xxxxxxx in this check.
+    if len(working_directory + '/inst/supervisord.socket.xxxxxxx') > 108:
+      raise RuntimeError('working directory ( {} ) is too deep, try setting '
+              'SLAPOS_TEST_WORKING_DIR'.format(working_directory))
 
     if not os.path.exists(working_directory):
       os.mkdir(working_directory)
@@ -128,7 +138,7 @@ class SlapOSInstanceTestCase(unittest.TestCase):
     # TODO: log more details in this case
     assert software_status_dict['status_code'] == 0
 
-    instance_parameter_dict = cls.getInstanceParmeterDict()
+    instance_parameter_dict = cls.getInstanceParameterDict()
     instance_status_dict = slapos_controler.runComputerPartition(
         config,
         cluster_configuration=instance_parameter_dict,
@@ -147,7 +157,7 @@ class SlapOSInstanceTestCase(unittest.TestCase):
           partition_parameter_kw=instance_parameter_dict))
 
     # expose some class attributes so that tests can use them:
-    # the ComputerPartition instances, to getInstanceParmeterDict
+    # the ComputerPartition instances, to getInstanceParameterDict
     cls.computer_partition = computer_partition_list[0]
 
     # the path of the instance on the filesystem, for low level inspection
@@ -158,7 +168,10 @@ class SlapOSInstanceTestCase(unittest.TestCase):
 
 
   @classmethod
-  def tearDownClass(cls):
-    # FIXME: if setUpClass fail, this is not called and leaks zombie processes
-    cls._process_manager.killPreviousRun()
+  def stopSlapOSProcesses(cls):
+    if hasattr(cls, '_process_manager'):
+      cls._process_manager.killPreviousRun()
 
+  @classmethod
+  def tearDownClass(cls):
+    cls.stopSlapOSProcesses()