an ordered database test

lib/spack/spack/test/__init__.py

@@ -56,7 +56,8 @@
               'spec_yaml',
               'optional_deps',
               'make_executable',
-              'configure_guess']
+              'configure_guess',
+              'database']
 
 
 def list_tests():

lib/spack/spack/test/database.py

@@ -0,0 +1,104 @@
+##############################################################################
+# Copyright (c) 2013, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://scalability-llnl.github.io/spack
+# Please also see the LICENSE file for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License (as published by
+# the Free Software Foundation) version 2.1 dated February 1999.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
+# conditions of the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+"""
+These tests check the database is functioning properly,
+both in memory and in its file
+"""
+import unittest
+
+from llnl.util.lock import *
+from llnl.util.filesystem import join_path
+
+import spack
+from spack.database import Database
+
+
+class DatabaseTest(unittest.TestCase):
+    def setUp(self):
+        self.original_db = spack.installed_db
+        spack.installed_db = Database(self.original_db._root,"_test_index.yaml")
+        self.file_path = join_path(self.original_db._root,"_test_index.yaml")
+        if os.path.exists(self.file_path):
+            os.remove(self.file_path)
+
+    def tearDown(self):
+        spack.installed_db = self.original_db
+        os.remove(self.file_path)
+
+    def _test_read_from_install_tree(self):
+        specs = spack.install_layout.all_specs()
+        spack.installed_db.read_database()
+        spack.installed_db.write()
+        for sph in spack.installed_db._data:
+            self.assertTrue(sph['spec'] in specs)
+        self.assertEqual(len(specs),len(spack.installed_db._data))
+
+    def _test_remove_and_add(self):
+        specs = spack.install_layout.all_specs()
+        spack.installed_db.remove(specs[len(specs)-1])
+        for sph in spack.installed_db._data:
+            self.assertTrue(sph['spec'] in specs[:len(specs)-1])
+        self.assertEqual(len(specs)-1,len(spack.installed_db._data))
+
+        spack.installed_db.add(specs[len(specs)-1],"")
+        for sph in spack.installed_db._data:
+            self.assertTrue(sph['spec'] in specs)
+        self.assertEqual(len(specs),len(spack.installed_db._data))
+
+    def _test_read_from_file(self):
+        spack.installed_db.read_database()
+        size = len(spack.installed_db._data)
+        spack.installed_db._data = spack.installed_db._data[1:]
+        os.utime(spack.installed_db._file_path,None)
+        spack.installed_db.read_database()
+        self.assertEqual(size,len(spack.installed_db._data))
+
+        specs = spack.install_layout.all_specs()
+        self.assertEqual(size,len(specs))
+        for sph in spack.installed_db._data:
+            self.assertTrue(sph['spec'] in specs)
+
+
+    def _test_write_to_file(self):
+        spack.installed_db.read_database()
+        size = len(spack.installed_db._data)
+        real_data = spack.installed_db._data
+        spack.installed_db._data = real_data[:size-1]
+        spack.installed_db.write()
+        spack.installed_db._data = real_data
+        os.utime(spack.installed_db._file_path,None)
+        spack.installed_db.read_database()
+        self.assertEqual(size-1,len(spack.installed_db._data))
+
+        specs = spack.install_layout.all_specs()
+        self.assertEqual(size,len(specs))
+        for sph in spack.installed_db._data:
+            self.assertTrue(sph['spec'] in specs[:size-1])
+
+    def test_ordered_test(self):
+        self._test_read_from_install_tree()
+        self._test_remove_and_add()
+        self._test_read_from_file()
+        self._test_write_to_file()