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diff --git a/lib/spack/spack/test/build_system_guess.py b/lib/spack/spack/test/build_system_guess.py
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+++ b/lib/spack/spack/test/build_system_guess.py
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+##############################################################################
+# Copyright (c) 2013-2016, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/llnl/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 Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, 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 Lesser 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
+##############################################################################
+import os
+import shutil
+import tempfile
+import unittest
+
+from llnl.util.filesystem import *
+from spack.cmd.create import BuildSystemGuesser
+from spack.stage import Stage
+from spack.test.mock_packages_test import *
+from spack.util.executable import which
+
+
+class InstallTest(unittest.TestCase):
+    """Tests the build system guesser in spack create"""
+
+    def setUp(self):
+        self.tar = which('tar')
+        self.tmpdir = tempfile.mkdtemp()
+        self.orig_dir = os.getcwd()
+        os.chdir(self.tmpdir)
+        self.stage = None
+
+    def tearDown(self):
+        shutil.rmtree(self.tmpdir, ignore_errors=True)
+        os.chdir(self.orig_dir)
+
+    def check_archive(self, filename, system):
+        mkdirp('archive')
+        touch(join_path('archive', filename))
+        self.tar('czf', 'archive.tar.gz', 'archive')
+
+        url = 'file://' + join_path(os.getcwd(), 'archive.tar.gz')
+        print url
+        with Stage(url) as stage:
+            stage.fetch()
+
+            guesser = BuildSystemGuesser()
+            guesser(stage, url)
+            self.assertEqual(system, guesser.build_system)
+
+    def test_autotools(self):
+        self.check_archive('configure', 'autotools')
+
+    def test_cmake(self):
+        self.check_archive('CMakeLists.txt', 'cmake')
+
+    def test_scons(self):
+        self.check_archive('SConstruct', 'scons')
+
+    def test_python(self):
+        self.check_archive('setup.py', 'python')
+
+    def test_R(self):
+        self.check_archive('NAMESPACE', 'R')
+
+    def test_unknown(self):
+        self.check_archive('foobar', 'unknown')