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Commit26fc586

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Verified that it apparently is impossible to add empty submodules using git-python.
This is the case with `git submodule add` as well. This makes sense asan empty git repository doesn't have a commit, which needs to be specifiedas SHA in the parent repositories tree entry for the respective submodule.When manually adding the empty submodule to the .gitmodules file, git-pythonwill throw another error related to the inability to find the submodulein the index.Even if an iteration would be possible, git-python would now throwa BadName exception, which clearly indicates that the 'HEAD' revisionis invalid (as it doesn't point to any commit).Fixesgitpython-developers#152Fixesgitpython-developers#105
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‎git/test/test_submodule.py‎

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@@ -1,19 +1,21 @@
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# This module is part of GitPython and is released under
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# the BSD License: http://www.opensource.org/licenses/bsd-license.php
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importshutil
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importsys
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importos
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importgit
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fromgit.test.libimport (
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TestBase,
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with_rw_repo
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)
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fromgitdb.test.libimportwith_rw_directory
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fromgit.excimportInvalidGitRepositoryError
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fromgit.objects.submodule.baseimportSubmodule
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fromgit.objects.submodule.rootimportRootModule,RootUpdateProgress
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fromgit.utilimportto_native_path_linux,join_path_native
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fromgit.compatimportstring_types
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importshutil
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importgit
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importsys
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importos
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fromnoseimportSkipTest
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@@ -597,3 +599,17 @@ def test_first_submodule(self, rwrepo):
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self.failUnlessRaises(ValueError,rwrepo.create_submodule,'fail',os.path.expanduser('~'))
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self.failUnlessRaises(ValueError,rwrepo.create_submodule,'fail-too',
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rwrepo.working_tree_dir+os.path.sep)
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@with_rw_directory
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deftest_add_empty_repo(self,rwdir):
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parent_dir=os.path.join(rwdir,'parent')
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os.mkdir(parent_dir)
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empty_repo_dir=os.path.join(rwdir,'empty-repo')
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parent=git.Repo.init(parent_dir)
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git.Repo.init(empty_repo_dir)
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forcheckout_modeinrange(2):
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self.failUnlessRaises(ValueError,parent.create_submodule,'empty','empty',
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url=empty_repo_dir,no_checkout=checkout_mode)
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# end for each checkout mode

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