Add a unit test for non-existent package directories

If a package is defined in .dotfilesrc and the package directory doesn't exist
in the repository when you attempt to add it, an IOError exception is thrown.
This test captures the failing scenario.

In reference to #17.

1 files changed, 21 insertions, 0 deletions

diff --git a/test_dotfiles.py b/test_dotfiles.py
index cce8009..ad4bba6 100755
--- a/test_dotfiles.py
+++ b/test_dotfiles.py
@@ -232,6 +232,27 @@ class DotfilesTestCase(unittest.TestCase):
         dotfiles.move(self.repository)
         check_all(files, symlinks)
 
+    def test_missing_package(self):
+        """
+        Test a non-existent package.
+        """
+
+        package_file = '.package/bar'
+
+        # Create Dotfiles object
+        dotfiles = core.Dotfiles(
+                homedir=self.homedir, repository=self.repository,
+                prefix='', ignore=[], externals={}, packages=['package'],
+                dry_run=False)
+
+        path = os.path.join(self.homedir, package_file)
+        dirname = os.path.dirname(path)
+        if not os.path.exists(dirname):
+            os.makedirs(dirname)
+        touch(path)
+
+        dotfiles.add([os.path.join(self.homedir, package_file)])
+
 
 def suite():
     suite = unittest.TestLoader().loadTestsFromTestCase(DotfilesTestCase)