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tests/test_model.py
 
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# Copyright (C) 2007 Canonical Ltd
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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"""Test the model for interacting with the git process, etc."""
 
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from bzrlib.plugins.git import tests
 
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from bzrlib.plugins.git.gitlib import (
 
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    errors,
 
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    model,
 
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    )
 
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class TestModel(tests.TestCaseInTempDir):
 
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    def test_no_head(self):
 
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        tests.run_git('init')
 
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        themodel = model.GitModel('.git')
 
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        self.assertIs(None, themodel.get_head())
 
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    def test_no_repository(self):
 
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        themodel = model.GitModel('.git')
 
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        self.assertRaises(errors.GitCommandError, themodel.get_head)
 
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    def test_ancestors(self):
 
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        tests.run_git('init')
 
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        builder = tests.GitBranchBuilder()
 
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        file_handle = builder.set_file('a', 'text for a\n', False)
 
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        commit1_handle = builder.commit('Joe Foo <joe@foo.com>', u'message')
 
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        file2_handle = builder.set_file('a', 'new a\n', False)
 
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        commit2_handle = builder.commit('Joe Foo <joe@foo.com>', u'new a')
 
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        file3_handle = builder.set_file('b', 'text for b\n', False)
 
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        commit3_handle = builder.commit('Jerry Bar <jerry@foo.com>', u'b',
 
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                                        base=commit1_handle)
 
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        commit4_handle = builder.commit('Jerry Bar <jerry@foo.com>', u'merge',
 
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                                        base=commit3_handle,
 
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                                        merge=[commit2_handle],)
 
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        mapping = builder.finish()
 
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        commit1_id = mapping[commit1_handle]
 
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        commit2_id = mapping[commit2_handle]
 
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        commit3_id = mapping[commit3_handle]
 
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        commit4_id = mapping[commit4_handle]
 
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        revisions = tests.run_git('rev-list', '--topo-order',
 
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                                  commit4_id)
 
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        revisions = revisions.splitlines()
 
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        self.assertEqual([commit4_id, commit2_id, commit3_id, commit1_id],
 
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                         revisions)
 
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        graph = {revisions[0]:[revisions[2], revisions[1]],
 
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                 revisions[1]:[revisions[3]],
 
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                 revisions[2]:[revisions[3]],
 
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                 revisions[3]:[],
 
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                }
 
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        themodel = model.GitModel('.git')
 
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        tests.run_git('reset', '--hard', commit4_id)
 
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        self.assertEqual(revisions[0], themodel.get_head())
 
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        self.assertEqual(graph, themodel.ancestry([revisions[0]]))