Merge pull request #937 from davydden/features/unit_tests

Features/package_test

lib/spack/spack/package_test.py

@@ -0,0 +1,66 @@
+##############################################################################
+# Copyright (c) 2016, 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://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 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
+##############################################################################
+from spack import *
+import os
+
+
+def compile_c_and_execute(source_file, include_flags, link_flags):
+    """Compile C @p source_file with @p include_flags and @p link_flags,
+    run and return the output.
+    """
+    cc = which('cc')
+    flags = include_flags
+    flags.extend([source_file])
+    cc('-c', *flags)
+    name = os.path.splitext(os.path.basename(source_file))[0]
+    cc('-o', "check", "%s.o" % name,
+       *link_flags)
+
+    check = Executable('./check')
+    return check(return_output=True)
+
+
+def compare_output(current_output, blessed_output):
+    """Compare blessed and current output of executables."""
+    if not (current_output == blessed_output):
+        print "Produced output does not match expected output."
+        print "Expected output:"
+        print '-' * 80
+        print blessed_output
+        print '-' * 80
+        print "Produced output:"
+        print '-' * 80
+        print current_output
+        print '-' * 80
+        raise RuntimeError("Ouput check failed.",
+                           "See spack_output.log for details")
+
+
+def compare_output_file(current_output, blessed_output_file):
+    """Same as above, but when the blessed output is given as a file."""
+    with open(blessed_output_file, 'r') as f:
+        blessed_output = f.read()
+
+    compare_output(current_output, blessed_output)