--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rhodecode/tests/vcs/utils.py	Wed Jun 13 23:27:33 2012 +0200
@@ -0,0 +1,97 @@
+"""
+Utilities for tests only. These are not or should not be used normally -
+functions here are crafted as we don't want to use ``vcs`` to verify tests.
+"""
+import os
+import re
+import sys
+
+from subprocess import Popen
+
+
+class VCSTestError(Exception):
+    pass
+
+
+def run_command(cmd, args):
+    """
+    Runs command on the system with given ``args``.
+    """
+    command = ' '.join((cmd, args))
+    p = Popen(command, shell=True)
+    status = os.waitpid(p.pid, 0)[1]
+    return status
+
+
+def eprint(msg):
+    """
+    Prints given ``msg`` into sys.stderr as nose test runner hides all output
+    from sys.stdout by default and if we want to pipe stream somewhere we don't
+    need those verbose messages anyway.
+    Appends line break.
+    """
+    sys.stderr.write(msg)
+    sys.stderr.write('\n')
+
+
+class SCMFetcher(object):
+
+    def __init__(self, alias, test_repo_path, remote_repo, clone_cmd):
+        """
+        :param clone_cmd: command which would clone remote repository; pass
+          only first bits - remote path and destination would be appended
+          using ``remote_repo`` and ``test_repo_path``
+        """
+        self.alias = alias
+        self.test_repo_path = test_repo_path
+        self.remote_repo = remote_repo
+        self.clone_cmd = clone_cmd
+
+    def setup(self):
+        if not os.path.isdir(self.test_repo_path):
+            self.fetch_repo()
+
+    def fetch_repo(self):
+        """
+        Tries to fetch repository from remote path.
+        """
+        remote = self.remote_repo
+        eprint("Fetching repository %s into %s" % (remote, self.test_repo_path))
+        run_command(self.clone_cmd,  '%s %s' % (remote, self.test_repo_path))
+
+
+def get_normalized_path(path):
+    """
+    If given path exists, new path would be generated and returned. Otherwise
+    same whats given is returned. Assumes that there would be no more than
+    10000 same named files.
+    """
+    if os.path.exists(path):
+        dir, basename = os.path.split(path)
+        splitted_name = basename.split('.')
+        if len(splitted_name) > 1:
+            ext = splitted_name[-1]
+        else:
+            ext = None
+        name = '.'.join(splitted_name[:-1])
+        matcher = re.compile(r'^.*-(\d{5})$')
+        start = 0
+        m = matcher.match(name)
+        if not m:
+            # Haven't append number yet so return first
+            newname = '%s-00000' % name
+            newpath = os.path.join(dir, newname)
+            if ext:
+                newpath = '.'.join((newpath, ext))
+            return get_normalized_path(newpath)
+        else:
+            start = int(m.group(1)[-5:]) + 1
+            for x in xrange(start, 10000):
+                newname = name[:-5] + str(x).rjust(5, '0')
+                newpath = os.path.join(dir, newname)
+                if ext:
+                    newpath = '.'.join((newpath, ext))
+                if not os.path.exists(newpath):
+                    return newpath
+        raise VCSTestError("Couldn't compute new path for %s" % path)
+    return path