[arch-projects] [namcap] [PATCH] Fix testsuite to not hardcode the libalpm version.

[Eli Schwartz]

Namcap already depends on pyelftools, which contains an elegant way to
retrieve the soname information directly from libalpm.so (demonstrated
in readelf.py).

Using hardcoded strings means the testsuite periodically breaks (every
time the external pacman project bumps their soname), for no good reason
and at least a few bad ones.

Signed-off-by: Eli Schwartz <eschwartz at archlinux.org>
---
 Namcap/tests/package/test_sodepends.py | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/Namcap/tests/package/test_sodepends.py b/Namcap/tests/package/test_sodepends.py
index 3a3d7b6..f94b3e9 100644
--- a/Namcap/tests/package/test_sodepends.py
+++ b/Namcap/tests/package/test_sodepends.py
@@ -2,7 +2,7 @@
 #
 # namcap tests - sodepends
 # Copyright (C) 2011 Rémy Oudompheng <remy at archlinux.org>
-# 
+#
 #   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; either version 2 of the License, or
@@ -17,11 +17,23 @@
 #   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
 from Namcap.tests.makepkg import MakepkgTest
 import Namcap.rules.sodepends
+from elftools.elf.dynamic import DynamicSection
+from elftools.elf.elffile import ELFFile
+
+def get_soname(filename):
+	with open(filename, 'rb') as f:
+		alpm = ELFFile(f)
+		for section in alpm.iter_sections():
+			if not isinstance(section, DynamicSection):
+				continue
+			for tag in section.iter_tags():
+				if tag.entry.d_tag == 'DT_SONAME':
+					return tag.soname
 
 class SoDependsTest(MakepkgTest):
 	pkgbuild = """
@@ -47,6 +59,7 @@ package() {
 	def test_sodepends(self):
 		"Package with missing pacman dependency"
 		pkgfile = "__namcap_test_sodepends-1.0-1-%(arch)s.pkg.tar" % { "arch": self.arch }
+		alpm_filename = os.path.join('usr/lib', get_soname('/usr/lib/libalpm.so'))
 		with open(os.path.join(self.tmpdir, "PKGBUILD"), "w") as f:
 			f.write(self.pkgbuild)
 		self.run_makepkg()
@@ -56,15 +69,15 @@ package() {
 				)
 		self.assertEqual(pkg.detected_deps['pacman'], [
 			('libraries-needed %s %s',
-			 (str(['usr/lib/libalpm.so.10']), str(["usr/bin/main"]))
+			 (str([alpm_filename]), str(["usr/bin/main"]))
 			)]
 		)
 		e, w, i = Namcap.depends.analyze_depends(pkg)
 		self.assertEqual(e, [
 			('dependency-detected-not-included %s (%s)',
-				('pacman', "libraries ['usr/lib/libalpm.so.10'] needed in files ['usr/bin/main']"))
+				('pacman', "libraries ['%s'] needed in files ['usr/bin/main']" % alpm_filename))
+
 		])
 		self.assertEqual(w, [])
 
 # vim: set ts=4 sw=4 noet:
-
-- 
2.18.0