test-revert: simplify generation of files

test-revert: simplify generation of files

With the recent change in naming of the generated files, it becomes
much easier to generate the files by iterating over all the possible
states than over the state transitions.

--- a/tests/test-revert.t	Wed Nov 05 11:16:31 2014 -0600
+++ b/tests/test-revert.t	Sat Oct 18 22:00:08 2014 -0700
@@ -427,59 +427,20 @@
   > import sys
   > import os
   > 
-  > # content of the file in "base" and "parent"
-  > # None means no file at all
-  > ctxcontent = {
-  >     # clean: no change from base to parent
-  >     'clean': ['content1', 'content1'],
-  >     # modified: file content change from base to parent
-  >     'modified': ['content1', 'content2'],
-  >     # added: file is missing from base and added in parent
-  >     'added': [None, 'content2'],
-  >     # removed: file exist in base but is removed from parent
-  >     'removed': ['content1', None],
-  >     # file exist neither in base not in parent
-  >     'missing': [None, None],
-  > }
-  > 
-  > # content of file in working copy
-  > wccontent = {
-  >     # clean: wc content is the same as parent
-  >     'clean': (True, lambda cc: cc[1]),
-  >     # revert: wc content is the same as base
-  >     'revert': (True, lambda cc: cc[0]),
-  >     # wc: file exist with a content different from base and parent
-  >     'wc': (True, lambda cc: 'content3'),
-  >     # deleted: file is recorded as tracked but missing
-  >     #          rely on file deletion outside of this script
-  >     'deleted': (True, lambda cc: None),
-  > }
-  > # untracked-X is a version of X where the file is not tracked (? unknown)
-  > wccontent['untracked-clean'] = (False, wccontent['clean'][1])
-  > wccontent['untracked-deleted'] = (False, wccontent['deleted'][1])
-  > wccontent['untracked-revert'] = (False, wccontent['revert'][1])
-  > wccontent['untracked-wc'] = (False, wccontent['wc'][1])
-  > 
   > # build the combination of possible states
   > combination = []
-  > for ctxkey, ctxvalue in ctxcontent.iteritems():
-  >     for wckey, (tracked, wcfunc) in wccontent.iteritems():
-  >         base, parent = ctxvalue
-  >         if (base == parent and 'revert' in wckey):
-  >             continue
-  >         if not base and 'revert' in wckey:
-  >             continue
-  >         if not parent and 'deleted' in wckey:
-  >             continue
-  >         def statestring(content):
-  >             return content is None and 'missing' or content
-  >         wcc = wcfunc(ctxvalue)
-  >         trackedstring = tracked and 'tracked' or 'untracked'
-  >         filename = "%s_%s_%s-%s" % (statestring(base),
-  >                                     statestring(parent),
-  >                                     statestring(wcc),
-  >                                     trackedstring)
-  >         combination.append((filename, base, parent, wcc))
+  > for base in [None, 'content1']:
+  >     for parent in set([None, 'content2']) | set([base]):
+  >         for wcc in set([None, 'content3']) | set([base, parent]):
+  >             for tracked in (False, True):
+  >                 def statestring(content):
+  >                     return content is None and 'missing' or content
+  >                 trackedstring = tracked and 'tracked' or 'untracked'
+  >                 filename = "%s_%s_%s-%s" % (statestring(base),
+  >                                             statestring(parent),
+  >                                             statestring(wcc),
+  >                                             trackedstring)
+  >                 combination.append((filename, base, parent, wcc))
   > 
   > # make sure we have stable output
   > combination.sort()