find zope home from SOFTWARE_HOME enironment variable before trying to guess

from some common paths. This is required if you want to run tests from buildout
where ERP5 is not installed on the machine


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28665 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/tests/runUnitTest.py

@@ -46,7 +46,7 @@ Options:
                              to erp5_sql_connection_string)
   --email_from_address=STRING
                              Initialise the email_from_address property of the
-                             portal, by defaults, CMFActivity failures are sent
+                             portal, by default, CMFActivity failures are sent
                              on localhost from this address, to this address
   --erp5_catalog_storage=STRING
                              Use the given business template as erp5_catalog
@@ -118,7 +118,9 @@ def initializeInstanceHome(tests_framework_home,
       shutil.copy(src, dst)
     else:
       os.symlink(src, dst)
+  # add some paths where we can find copyzopeskel
   sys.path.append(os.path.join(zope_home, "bin"))
+  sys.path.append(os.path.join(zope_home, "utilities"))
   import copyzopeskel
   kw = {
     "PYTHON":sys.executable,
@@ -130,23 +132,31 @@ def initializeInstanceHome(tests_framework_home,
   copyzopeskel.copyskel(skelsrc, instance_home, None, None, **kw)
 
 # site specific variables
-
 tests_framework_home = os.path.dirname(os.path.abspath(__file__))
 
-# handle 64bit architecture and windows
-if WIN:
+# find zope home, either from SOFTWARE_HOME environment variable, or by
+# guessing some common paths.
+if 'SOFTWARE_HOME' in os.environ:
+  software_home = os.environ['SOFTWARE_HOME']
+  if not os.path.exists(software_home):
+    raise ValueError('SOFTWARE_HOME is set to non existing directory %r'
+                      % (software_home,))
+  # software_home is zope_home/lib/python, remove lib/python
+  zope_home = os.path.split(os.path.split(software_home)[0])[0]
+else:
+  if WIN:
     erp5_home = os.path.sep.join(
         tests_framework_home.split(os.path.sep)[:-4])
     zope_home = os.path.join(erp5_home, 'Zope')
-elif os.path.isdir('/usr/lib64/zope/lib/python'):
+  elif os.path.isdir('/usr/lib64/zope/lib/python'):
     zope_home = '/usr/lib64/zope'
-elif os.path.isdir('/usr/lib/erp5/lib/python'):
+  elif os.path.isdir('/usr/lib/erp5/lib/python'):
     zope_home = '/usr/lib/erp5'
-elif os.path.isdir('/usr/lib/zope2.8/lib/python'):
+  elif os.path.isdir('/usr/lib/zope2.8/lib/python'):
     zope_home = '/usr/lib/zope2.8'
-else:
+  else:
     zope_home = '/usr/lib/zope'
-software_home = os.path.join(zope_home, 'lib', 'python')
+  software_home = os.path.join(zope_home, 'lib', 'python')
 
 # handle 'system global' instance and windows
 if WIN: