Added basis for initial dulwich integration. Many basic issues should surface while integrating this

6 files changed, 52 insertions, 2 deletions

diff --git a/git/db/dulwich/__init__.py b/git/db/dulwich/__init__.py
new file mode 100644
index 00000000..92d30941
--- /dev/null
+++ b/git/db/dulwich/__init__.py
@@ -0,0 +1,13 @@
+"""Dulwich module initialization"""
+
+def init_dulwich():
+	""":raise ImportError: if dulwich is not present"""
+	try:
+		import dulwich
+	except ImportError:
+		raise ImportError("Could not find 'dulwich' in the PYTHONPATH - dulwich functionality is not available")
+	#END handle dulwich import
+
+
+
+init_dulwich()
diff --git a/git/db/dulwich/base.py b/git/db/dulwich/base.py
new file mode 100644
index 00000000..cd1d71c8
--- /dev/null
+++ b/git/db/dulwich/base.py
@@ -0,0 +1,6 @@
+"""Module with some basic database implementations"""
+
+
+__all__ = []
+
+
diff --git a/git/test/db/dulwich/__init__.py b/git/test/db/dulwich/__init__.py
new file mode 100644
index 00000000..8a681e42
--- /dev/null
+++ b/git/test/db/dulwich/__init__.py
@@ -0,0 +1,4 @@
+# Copyright (C) 2010, 2011 Sebastian Thiel (byronimo@gmail.com) and contributors
+#
+# This module is part of GitDB and is released under
+# the New BSD License: http://www.opensource.org/licenses/bsd-license.php
diff --git a/git/test/db/dulwich/test_base.py b/git/test/db/dulwich/test_base.py
new file mode 100644
index 00000000..f3489014
--- /dev/null
+++ b/git/test/db/dulwich/test_base.py
@@ -0,0 +1,22 @@
+# Copyright (C) 2010, 2011 Sebastian Thiel (byronimo@gmail.com) and contributors
+#
+# This module is part of GitDB and is released under
+# the New BSD License: http://www.opensource.org/licenses/bsd-license.php
+from git.test.db.base import RepoBase
+from git.db.complex import PureCompatibilityGitDB
+
+try:
+	import git.db.dulwich		# import test
+
+	class TestPyDBBase(RepoBase):
+		
+		RepoCls = PureCompatibilityGitDB
+		
+	#	def test_basics(self):
+	#		pass
+			
+except ImportError:
+	del(RepoBase)
+	import warnings
+	warnings.warn("Skipped all dulwich tests as they are not in the path")
+#END handle import
diff --git a/git/test/db/lib.py b/git/test/db/lib.py
index 499ca252..2b3ddde5 100644
--- a/git/test/db/lib.py
+++ b/git/test/db/lib.py
@@ -70,7 +70,8 @@ class TestDBBase(TestBase):
 		each test type has its own repository
 		"""
 		if cls.needs_ro_repo:
-			assert cls.RepoCls is not None, "RepoCls class member must be set"
+			if cls is not TestDBBase:
+				assert cls.RepoCls is not None, "RepoCls class member must be set in %s" % cls
 			cls.rorepo = cls.RepoCls(rorepo_dir())
 		#END handle rorepo
 	
diff --git a/git/test/lib/helper.py b/git/test/lib/helper.py
index d9a92a52..ef2d3280 100644
--- a/git/test/lib/helper.py
+++ b/git/test/lib/helper.py
@@ -207,7 +207,11 @@ class GlobalsItemDeletorMetaCls(type):
 		new_type = super(GlobalsItemDeletorMetaCls, metacls).__new__(metacls, name, bases, clsdict)
 		if name != metacls.ModuleToDelete:
 			mod = __import__(new_type.__module__, globals(), locals(), new_type.__module__)
-			delattr(mod, metacls.ModuleToDelete)
+			try:
+				delattr(mod, metacls.ModuleToDelete)
+			except AttributeError:
+				pass
+			#END skip case that people import our base without actually using it
 		#END handle deletion
 		return new_type