Document ftp: have timeout at tests, skip if server is not available.

At trunk-xrg, the FTP daemon is only started *after* the db is loaded,
which means that it will not be available for tests on a server upgrade.
(still, tests can be performed through the base_module_record's importer)

Anyway, it is not wise to block the server startup if FTP doesn't
respond.

bzr revid: p_christ@hol.gr-20100713103016-33gu4o7yvkn7hmnd

addons/document_ftp/test/document_ftp_test2.yml

@@ -5,7 +5,7 @@
 -
     !python {model: ir.attachment}: |
         from document_ftp import test_easyftp as te
-        ftp = te.get_plain_ftp()
+        ftp = te.get_plain_ftp(timeout=2.0)
         assert ftp.sock and (ftp.lastresp == '220'), ftp.lastresp
 -
     I read the list of databases at port 8021 and confirm our db is

addons/document_ftp/test/document_ftp_test3.yml

@@ -1,5 +1,9 @@
 -
     In order to check international character functionality
+-
+    !python {model: ir.attachment}: |
+        from document_ftp import test_easyftp as te
+        ftp = te.get_plain_ftp(timeout=1.0)
 -
     I create in the server a folder called 'Äïêéìáóôéêüò ÖÜêåëëïò'
 -

addons/document_ftp/test/document_ftp_test4.yml

@@ -1,5 +1,9 @@
 -
     In order to check dynamic folder functionality of document + FTP
+-
+    !python {model: ir.attachment}: |
+        from document_ftp import test_easyftp as te
+        ftp = te.get_plain_ftp(timeout=1.0)
 - |
     I create two partners 'Partner1' and 'Partner2'.
     I create three partner categories: 'none', 'pat1' and 'all'

addons/document_ftp/test_easyftp.py

@@ -28,11 +28,11 @@ from ftplib import FTP
 from tools.misc import detect_ip_addr
 from tools import config
 
-def get_plain_ftp():
+def get_plain_ftp(timeout=10.0):
     ftp = FTP()
     host = config.get('ftp_server_host', '127.0.0.1')
     port = config.get('ftp_server_port','8021')
-    ftp.connect(host,port)
+    ftp.connect(host,port, timeout=timeout)
     return ftp
 
 def get_ftp_login(cr, uid, ormobj):