diff --git a/lib/spack/spack/test/url_parse.py b/lib/spack/spack/test/url_parse.py
index effbb4b2c4..cf6f262fdf 100644
--- a/lib/spack/spack/test/url_parse.py
+++ b/lib/spack/spack/test/url_parse.py
@@ -23,709 +23,407 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 """Tests Spack's ability to parse the name and version of a package
-based on its URL."""
+based on its URL.
+"""
 
 import os
-import unittest
 
+import pytest
 from spack.url import *
 
 
-class UrlStripVersionSuffixesTest(unittest.TestCase):
-    """Tests for spack.url.strip_version_suffixes"""
-
-    def check(self, before, after):
-        stripped = strip_version_suffixes(before)
-        self.assertEqual(stripped, after)
-
-    def test_no_suffix(self):
-        self.check('rgb-1.0.6',
-                   'rgb-1.0.6')
-
-    def test_misleading_prefix(self):
-        self.check('jpegsrc.v9b',
-                   'jpegsrc.v9b')
-        self.check('turbolinux702',
-                   'turbolinux702')
-        self.check('converge_install_2.3.16',
-                   'converge_install_2.3.16')
-
-    # Download type
-
-    def test_src(self):
-        self.check('apache-ant-1.9.7-src',
-                   'apache-ant-1.9.7')
-        self.check('go1.7.4.src',
-                   'go1.7.4')
-
-    def test_source(self):
-        self.check('bowtie2-2.2.5-source',
-                   'bowtie2-2.2.5')
-        self.check('grib_api-1.17.0-Source',
-                   'grib_api-1.17.0')
-
-    def test_full(self):
-        self.check('julia-0.4.3-full',
-                   'julia-0.4.3')
-
-    def test_bin(self):
-        self.check('apache-maven-3.3.9-bin',
-                   'apache-maven-3.3.9')
-
-    def test_binary(self):
-        self.check('Jmol-14.8.0-binary',
-                   'Jmol-14.8.0')
-
-    def test_gem(self):
-        self.check('rubysl-date-2.0.9.gem',
-                   'rubysl-date-2.0.9')
-
-    def test_tar(self):
-        self.check('gromacs-4.6.1-tar',
-                   'gromacs-4.6.1')
-
-    def test_sh(self):
-        self.check('Miniconda2-4.3.11-Linux-x86_64.sh',
-                   'Miniconda2-4.3.11')
-
-    # Download version
-
-    def test_stable(self):
-        self.check('libevent-2.0.21-stable',
-                   'libevent-2.0.21')
-
-    def test_final(self):
-        self.check('2.6.7-final',
-                   '2.6.7')
-
-    def test_rel(self):
-        self.check('v1.9.5.1rel',
-                   'v1.9.5.1')
-
-    def test_orig(self):
-        self.check('dash_0.5.5.1.orig',
-                   'dash_0.5.5.1')
-
-    def test_plus(self):
-        self.check('ncbi-blast-2.6.0+-src',
-                   'ncbi-blast-2.6.0')
-
+@pytest.mark.parametrize('url,expected', [
+    # No suffix
+    ('rgb-1.0.6', 'rgb-1.0.6'),
+    # Misleading prefix
+    ('jpegsrc.v9b', 'jpegsrc.v9b'),
+    ('turbolinux702', 'turbolinux702'),
+    ('converge_install_2.3.16', 'converge_install_2.3.16'),
+    # Download type - src
+    ('apache-ant-1.9.7-src', 'apache-ant-1.9.7'),
+    ('go1.7.4.src', 'go1.7.4'),
+    # Download type - source
+    ('bowtie2-2.2.5-source', 'bowtie2-2.2.5'),
+    ('grib_api-1.17.0-Source', 'grib_api-1.17.0'),
+    # Download type - full
+    ('julia-0.4.3-full', 'julia-0.4.3'),
+    # Download type - bin
+    ('apache-maven-3.3.9-bin', 'apache-maven-3.3.9'),
+    # Download type - binary
+    ('Jmol-14.8.0-binary', 'Jmol-14.8.0'),
+    # Download type - gem
+    ('rubysl-date-2.0.9.gem', 'rubysl-date-2.0.9'),
+    # Download type - tar
+    ('gromacs-4.6.1-tar', 'gromacs-4.6.1'),
+    # Download type - sh
+    ('Miniconda2-4.3.11-Linux-x86_64.sh', 'Miniconda2-4.3.11'),
+    # Download version - stable
+    ('libevent-2.0.21-stable', 'libevent-2.0.21'),
+    # Download version - final
+    ('2.6.7-final', '2.6.7'),
+    # Download version - rel
+    ('v1.9.5.1rel', 'v1.9.5.1'),
+    # Download version - orig
+    ('dash_0.5.5.1.orig', 'dash_0.5.5.1'),
+    # Download version - plus
+    ('ncbi-blast-2.6.0+-src', 'ncbi-blast-2.6.0'),
     # License
-
-    def test_gpl(self):
-        self.check('cppad-20170114.gpl',
-                   'cppad-20170114')
-
-    # OS
-
-    def test_linux(self):
-        self.check('astyle_2.04_linux',
-                   'astyle_2.04')
-
-    def test_unix(self):
-        self.check('install-tl-unx',
-                   'install-tl')
-
-    def test_macos(self):
-        self.check('astyle_1.23_macosx',
-                   'astyle_1.23')
-        self.check('haxe-2.08-osx',
-                   'haxe-2.08')
-
-    # PyPI
-
-    def test_wheel(self):
-        self.check('entrypoints-0.2.2-py2.py3-none-any.whl',
-                   'entrypoints-0.2.2')
-        self.check('numpy-1.12.0-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl',  # noqa
-                   'numpy-1.12.0')
-
-    def test_exe(self):
-        self.check('PyYAML-3.12.win-amd64-py3.5.exe',
-                   'PyYAML-3.12')
-
-    # Combinations of multiple patterns
-
-    def test_complex_all(self):
-        self.check('p7zip_9.04_src_all',
-                   'p7zip_9.04')
-
-    def test_complex_run(self):
-        self.check('cuda_8.0.44_linux.run',
-                   'cuda_8.0.44')
-
-    def test_complex_file(self):
-        self.check('ack-2.14-single-file',
-                   'ack-2.14')
-
-    def test_complex_jar(self):
-        self.check('antlr-3.4-complete.jar',
-                   'antlr-3.4')
-
-    def test_complex_oss(self):
-        self.check('tbb44_20160128oss_src_0',
-                   'tbb44_20160128')
-
-    def test_complex_darwin(self):
-        self.check('ghc-7.0.4-x86_64-apple-darwin',
-                   'ghc-7.0.4')
-        self.check('ghc-7.0.4-i386-apple-darwin',
-                   'ghc-7.0.4')
-
-    def test_complex_arch(self):
-        self.check('VizGlow_v2.2alpha17-R21November2016-Linux-x86_64-Install',
-                   'VizGlow_v2.2alpha17-R21November2016')
-        self.check('jdk-8u92-linux-x64',
-                   'jdk-8u92')
-        self.check('cuda_6.5.14_linux_64.run',
-                   'cuda_6.5.14')
-
-    def test_complex_with(self):
-        self.check('mafft-7.221-with-extensions-src',
-                   'mafft-7.221')
-        self.check('spark-2.0.0-bin-without-hadoop',
-                   'spark-2.0.0')
-
-    def test_complex_public(self):
-        self.check('dakota-6.3-public.src',
-                   'dakota-6.3')
-
-    def test_complex_universal(self):
-        self.check('synergy-1.3.6p2-MacOSX-Universal',
-                   'synergy-1.3.6p2')
+    ('cppad-20170114.gpl', 'cppad-20170114'),
+    # OS - linux
+    ('astyle_2.04_linux', 'astyle_2.04'),
+    # OS - unix
+    ('install-tl-unx', 'install-tl'),
+    # OS - macos
+    ('astyle_1.23_macosx', 'astyle_1.23'),
+    ('haxe-2.08-osx', 'haxe-2.08'),
+    # PyPI - wheel
+    ('entrypoints-0.2.2-py2.py3-none-any.whl', 'entrypoints-0.2.2'),
+    ('numpy-1.12.0-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl', 'numpy-1.12.0'),  # noqa
+    # PyPI - exe
+    ('PyYAML-3.12.win-amd64-py3.5.exe', 'PyYAML-3.12'),
+    # Combinations of multiple patterns - all
+    ('p7zip_9.04_src_all', 'p7zip_9.04'),
+    # Combinations of multiple patterns - run
+    ('cuda_8.0.44_linux.run', 'cuda_8.0.44'),
+    # Combinations of multiple patterns - file
+    ('ack-2.14-single-file', 'ack-2.14'),
+    # Combinations of multiple patterns - jar
+    ('antlr-3.4-complete.jar', 'antlr-3.4'),
+    # Combinations of multiple patterns - oss
+    ('tbb44_20160128oss_src_0', 'tbb44_20160128'),
+    # Combinations of multiple patterns - darwin
+    ('ghc-7.0.4-x86_64-apple-darwin', 'ghc-7.0.4'),
+    ('ghc-7.0.4-i386-apple-darwin', 'ghc-7.0.4'),
+    # Combinations of multiple patterns - arch
+    ('VizGlow_v2.2alpha17-R21November2016-Linux-x86_64-Install',
+     'VizGlow_v2.2alpha17-R21November2016'),
+    ('jdk-8u92-linux-x64', 'jdk-8u92'),
+    ('cuda_6.5.14_linux_64.run', 'cuda_6.5.14'),
+    # Combinations of multiple patterns - with
+    ('mafft-7.221-with-extensions-src', 'mafft-7.221'),
+    ('spark-2.0.0-bin-without-hadoop', 'spark-2.0.0'),
+    # Combinations of multiple patterns - public
+    ('dakota-6.3-public.src', 'dakota-6.3'),
+    # Combinations of multiple patterns - universal
+    ('synergy-1.3.6p2-MacOSX-Universal', 'synergy-1.3.6p2')
+])
+def test_url_strip_version_suffixes(url, expected):
+    stripped = strip_version_suffixes(url)
+    assert stripped == expected
 
 
-class UrlStripNameSuffixesTest(unittest.TestCase):
-    """Tests for spack.url.strip_name_suffixes"""
-
-    def check(self, before, version, after):
-        stripped = strip_name_suffixes(before, version)
-        self.assertEqual(stripped, after)
-
-    def test_no_suffix(self):
-        self.check('rgb-1.0.6', '1.0.6',
-                   'rgb')
-        self.check('nauty26r7', '26r7',
-                   'nauty')
-
-    # Download type
-
-    def test_install(self):
-        self.check('converge_install_2.3.16', '2.3.16',
-                   'converge')
-
-    def test_src(self):
-        self.check('jpegsrc.v9b', '9b',
-                   'jpeg')
-
-    def test_std(self):
-        self.check('ghostscript-fonts-std-8.11', '8.11',
-                   'ghostscript-fonts')
-
-    # Download version
-
-    def test_release(self):
-        self.check('cbench_release_1.3.0.tar.gz', '1.3.0',
-                   'cbench')
-
-    def test_snapshot(self):
-        self.check('gts-snapshot-121130', '121130',
-                   'gts')
-
-    def test_distrib(self):
-        self.check('zoltan_distrib_v3.83', '3.83',
-                   'zoltan')
-
-    # VCS
-
-    def test_bazaar(self):
-        self.check('libvterm-0+bzr681', '681',
-                   'libvterm')
-
-    # License
-
-    def test_gpl(self):
-        self.check('PyQt-x11-gpl-4.11.3', '4.11.3',
-                   'PyQt-x11')
+@pytest.mark.parametrize('url,version,expected', [
+    # No suffix
+    ('rgb-1.0.6', '1.0.6', 'rgb'),
+    ('nauty26r7', '26r7', 'nauty'),
+    # Download type - install
+    ('converge_install_2.3.16', '2.3.16', 'converge'),
+    # Download type - src
+    ('jpegsrc.v9b', '9b', 'jpeg'),
+    # Download type - std
+    ('ghostscript-fonts-std-8.11', '8.11', 'ghostscript-fonts'),
+    # Download version - release
+    ('cbench_release_1.3.0.tar.gz', '1.3.0', 'cbench'),
+    # Download version - snapshot
+    ('gts-snapshot-121130', '121130', 'gts'),
+    # Download version - distrib
+    ('zoltan_distrib_v3.83', '3.83', 'zoltan'),
+    # VCS - bazaar
+    ('libvterm-0+bzr681', '681', 'libvterm'),
+    # License - gpl
+    ('PyQt-x11-gpl-4.11.3', '4.11.3', 'PyQt-x11')
+])
+def test_url_strip_name_suffixes(url, version, expected):
+    stripped = strip_name_suffixes(url, version)
+    assert stripped == expected
 
 
-class UrlParseOffsetTest(unittest.TestCase):
+@pytest.mark.parametrize('name,noffset,ver,voffset,path', [
+    # Name in path
+    ('antlr', 25, '2.7.7', 40, 'https://github.com/antlr/antlr/tarball/v2.7.7'),
+    # Name in stem
+    ('gmp', 32, '6.0.0a', 36, 'https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2'),
+    # Name in suffix
 
-    def check(self, name, noffset, ver, voffset, path):
-        # Make sure parse_name_offset and parse_name_version are working
-        v, vstart, vlen, vi, vre = parse_version_offset(path)
-        n, nstart, nlen, ni, nre = parse_name_offset(path, v)
+    # Don't think I've ever seen one of these before
+    # We don't look for it, so it would probably fail anyway
 
-        self.assertEqual(n, name)
-        self.assertEqual(v, ver)
-        self.assertEqual(nstart, noffset)
-        self.assertEqual(vstart, voffset)
+    # Version in path
+    ('nextflow', 31, '0.20.1', 59, 'https://github.com/nextflow-io/nextflow/releases/download/v0.20.1/nextflow'),
+    # Version in stem
+    ('zlib', 24, '1.2.10', 29, 'http://zlib.net/fossils/zlib-1.2.10.tar.gz'),
+    ('slepc', 51, '3.6.2', 57, 'http://slepc.upv.es/download/download.php?filename=slepc-3.6.2.tar.gz'),
+    ('cloog', 61, '0.18.1', 67, 'http://www.bastoul.net/cloog/pages/download/count.php3?url=./cloog-0.18.1.tar.gz'),
+    ('libxc', 58, '2.2.2', 64, 'http://www.tddft.org/programs/octopus/down.php?file=libxc/libxc-2.2.2.tar.gz'),
+    # Version in suffix
+    ('swiftsim', 36, '0.3.0', 76, 'http://gitlab.cosma.dur.ac.uk/swift/swiftsim/repository/archive.tar.gz?ref=v0.3.0'),
+    ('sionlib', 30, '1.7.1', 59, 'http://apps.fz-juelich.de/jsc/sionlib/download.php?version=1.7.1'),
+    # Regex in name
+    ('voro++', 40, '0.4.6', 47, 'http://math.lbl.gov/voro++/download/dir/voro++-0.4.6.tar.gz'),
+])
+def test_url_parse_offset(name, noffset, ver, voffset, path):
+    """Tests that the name, version and offsets are computed correctly.
 
-    def test_name_in_path(self):
-        self.check(
-            'antlr', 25, '2.7.7', 40,
-            'https://github.com/antlr/antlr/tarball/v2.7.7')
+    Args:
+        name (str): expected name
+        noffset (int): name offset
+        ver (str): expected version
+        voffset (int): version offset
+        path (str): url to be parsed
+    """
+    # Make sure parse_name_offset and parse_name_version are working
+    v, vstart, vlen, vi, vre = parse_version_offset(path)
+    n, nstart, nlen, ni, nre = parse_name_offset(path, v)
 
-    def test_name_in_stem(self):
-        self.check(
-            'gmp', 32, '6.0.0a', 36,
-            'https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2')
-
-    def test_name_in_suffix(self):
-        # Don't think I've ever seen one of these before
-        # We don't look for it, so it would probably fail anyway
-        pass
-
-    def test_version_in_path(self):
-        self.check(
-            'nextflow', 31, '0.20.1', 59,
-            'https://github.com/nextflow-io/nextflow/releases/download/v0.20.1/nextflow')
-
-    def test_version_in_stem(self):
-        self.check(
-            'zlib', 24, '1.2.10', 29,
-            'http://zlib.net/fossils/zlib-1.2.10.tar.gz')
-        self.check(
-            'slepc', 51, '3.6.2', 57,
-            'http://slepc.upv.es/download/download.php?filename=slepc-3.6.2.tar.gz')
-        self.check(
-            'cloog', 61, '0.18.1', 67,
-            'http://www.bastoul.net/cloog/pages/download/count.php3?url=./cloog-0.18.1.tar.gz')
-        self.check(
-            'libxc', 58, '2.2.2', 64,
-            'http://www.tddft.org/programs/octopus/down.php?file=libxc/libxc-2.2.2.tar.gz')
-
-    def test_version_in_suffix(self):
-        self.check(
-            'swiftsim', 36, '0.3.0', 76,
-            'http://gitlab.cosma.dur.ac.uk/swift/swiftsim/repository/archive.tar.gz?ref=v0.3.0')
-        self.check(
-            'sionlib', 30, '1.7.1', 59,
-            'http://apps.fz-juelich.de/jsc/sionlib/download.php?version=1.7.1')
-
-    def test_regex_in_name(self):
-        self.check(
-            'voro++', 40, '0.4.6', 47,
-            'http://math.lbl.gov/voro++/download/dir/voro++-0.4.6.tar.gz')
+    assert n == name
+    assert v == ver
+    assert nstart == noffset
+    assert vstart == voffset
 
 
-class UrlParseNameAndVersionTest(unittest.TestCase):
+@pytest.mark.parametrize('name,version,url', [
+    # Common Repositories - github downloads
 
-    def assert_not_detected(self, string):
-        self.assertRaises(
-            UndetectableVersionError, parse_name_and_version, string)
+    ('nco', '4.6.2', 'https://github.com/nco/nco/archive/4.6.2.tar.gz'),
+    # name/archive/vver.ver
+    ('vim', '8.0.0134', 'https://github.com/vim/vim/archive/v8.0.0134.tar.gz'),
+    # name/archive/name-ver.ver
+    ('oce', '0.18', 'https://github.com/tpaviot/oce/archive/OCE-0.18.tar.gz'),
+    # name/releases/download/vver/name-ver.ver
+    ('libmesh', '1.0.0', 'https://github.com/libMesh/libmesh/releases/download/v1.0.0/libmesh-1.0.0.tar.bz2'),
+    # name/tarball/vver.ver
+    ('git', '2.7.1', 'https://github.com/git/git/tarball/v2.7.1'),
+    # name/zipball/vver.ver
+    ('git', '2.7.1', 'https://github.com/git/git/zipball/v2.7.1'),
+    # Common Repositories - gitlab downloads
 
-    def check(self, name, v, string, **kwargs):
-        # Make sure correct name and version are extracted.
-        parsed_name, parsed_v = parse_name_and_version(string)
-        self.assertEqual(parsed_name, name)
-        self.assertEqual(parsed_v, Version(v))
+    # name/repository/archive.ext?ref=vver.ver
+    ('swiftsim', '0.3.0',
+     'http://gitlab.cosma.dur.ac.uk/swift/swiftsim/repository/archive.tar.gz?ref=v0.3.0'),
+    # name/repository/archive.ext?ref=name-ver.ver
+    ('icet', '1.2.3',
+     'https://gitlab.kitware.com/icet/icet/repository/archive.tar.gz?ref=IceT-1.2.3'),
 
-        # Make sure Spack formulates the right URL when we try to
-        # build one with a specific version.
-        self.assertEqual(string, substitute_version(string, v))
+    # Common Repositories - bitbucket downloads
 
-    # Common Repositories
+    # name/get/ver.ver
+    ('eigen', '3.2.7', 'https://bitbucket.org/eigen/eigen/get/3.2.7.tar.bz2'),
+    # name/get/vver.ver
+    ('hoomd-blue', '1.3.3',
+     'https://bitbucket.org/glotzer/hoomd-blue/get/v1.3.3.tar.bz2'),
+    # name/downloads/name-ver.ver
+    ('dolfin', '2016.1.0',
+     'https://bitbucket.org/fenics-project/dolfin/downloads/dolfin-2016.1.0.tar.gz'),
+    # Common Repositories - sourceforge downloads
 
-    def test_github_downloads(self):
-        # name/archive/ver.ver
-        self.check(
-            'nco', '4.6.2',
-            'https://github.com/nco/nco/archive/4.6.2.tar.gz')
-        # name/archive/vver.ver
-        self.check(
-            'vim', '8.0.0134',
-            'https://github.com/vim/vim/archive/v8.0.0134.tar.gz')
-        # name/archive/name-ver.ver
-        self.check(
-            'oce', '0.18',
-            'https://github.com/tpaviot/oce/archive/OCE-0.18.tar.gz')
-        # name/releases/download/vver/name-ver.ver
-        self.check(
-            'libmesh', '1.0.0',
-            'https://github.com/libMesh/libmesh/releases/download/v1.0.0/libmesh-1.0.0.tar.bz2')
-        # name/tarball/vver.ver
-        self.check(
-            'git', '2.7.1',
-            'https://github.com/git/git/tarball/v2.7.1')
-        # name/zipball/vver.ver
-        self.check(
-            'git', '2.7.1',
-            'https://github.com/git/git/zipball/v2.7.1')
+    # name-ver.ver
+    ('libpng', '1.6.27',
+     'http://download.sourceforge.net/libpng/libpng-1.6.27.tar.gz'),
+    ('lcms2', '2.6',
+     'http://downloads.sourceforge.net/project/lcms/lcms/2.6/lcms2-2.6.tar.gz'),
+    ('modules', '3.2.10',
+     'http://prdownloads.sourceforge.net/modules/modules-3.2.10.tar.gz'),
+    # name-ver.ver.ext/download
+    ('glew', '2.0.0',
+     'https://sourceforge.net/projects/glew/files/glew/2.0.0/glew-2.0.0.tgz/download'),
 
-    def test_gitlab_downloads(self):
-        # name/repository/archive.ext?ref=vver.ver
-        self.check(
-            'swiftsim', '0.3.0',
-            'http://gitlab.cosma.dur.ac.uk/swift/swiftsim/repository/archive.tar.gz?ref=v0.3.0')
-        # name/repository/archive.ext?ref=name-ver.ver
-        self.check(
-             'icet', '1.2.3',
-             'https://gitlab.kitware.com/icet/icet/repository/archive.tar.gz?ref=IceT-1.2.3')
+    # Common Repositories - cran downloads
 
-    def test_bitbucket_downloads(self):
-        # name/get/ver.ver
-        self.check(
-            'eigen', '3.2.7',
-            'https://bitbucket.org/eigen/eigen/get/3.2.7.tar.bz2')
-        # name/get/vver.ver
-        self.check(
-            'hoomd-blue', '1.3.3',
-            'https://bitbucket.org/glotzer/hoomd-blue/get/v1.3.3.tar.bz2')
-        # name/downloads/name-ver.ver
-        self.check(
-            'dolfin', '2016.1.0',
-            'https://bitbucket.org/fenics-project/dolfin/downloads/dolfin-2016.1.0.tar.gz')
+    # name.name_ver.ver-ver.ver
+    ('TH.data', '1.0-8', 'https://cran.r-project.org/src/contrib/TH.data_1.0-8.tar.gz'),
+    ('knitr', '1.14', 'https://cran.rstudio.com/src/contrib/knitr_1.14.tar.gz'),
+    ('devtools', '1.12.0', 'https://cloud.r-project.org/src/contrib/devtools_1.12.0.tar.gz'),
 
-    def test_sourceforge_downloads(self):
-        # name-ver.ver
-        self.check(
-            'libpng', '1.6.27',
-            'http://download.sourceforge.net/libpng/libpng-1.6.27.tar.gz')
-        self.check(
-            'lcms2', '2.6',
-            'http://downloads.sourceforge.net/project/lcms/lcms/2.6/lcms2-2.6.tar.gz')
-        self.check(
-            'modules', '3.2.10',
-            'http://prdownloads.sourceforge.net/modules/modules-3.2.10.tar.gz')
-        # name-ver.ver.ext/download
-        self.check(
-            'glew', '2.0.0',
-            'https://sourceforge.net/projects/glew/files/glew/2.0.0/glew-2.0.0.tgz/download')
+    # Common Repositories - pypi downloads
 
-    def test_cran_downloads(self):
-        # name.name_ver.ver-ver.ver
-        self.check(
-            'TH.data', '1.0-8',
-            'https://cran.r-project.org/src/contrib/TH.data_1.0-8.tar.gz')
-        self.check(
-            'knitr', '1.14',
-            'https://cran.rstudio.com/src/contrib/knitr_1.14.tar.gz')
-        self.check(
-            'devtools', '1.12.0',
-            'https://cloud.r-project.org/src/contrib/devtools_1.12.0.tar.gz')
-
-    def test_pypi_downloads(self):
-        # name.name_name-ver.ver
-        self.check(
-            '3to2', '1.1.1',
-            'https://pypi.python.org/packages/source/3/3to2/3to2-1.1.1.zip')
-        self.check(
-            'mpmath', '0.19',
-            'https://pypi.python.org/packages/source/m/mpmath/mpmath-all-0.19.tar.gz')
-        self.check(
-            'pandas', '0.16.0',
-            'https://pypi.python.org/packages/source/p/pandas/pandas-0.16.0.tar.gz#md5=bfe311f05dc0c351f8955fbd1e296e73')
-        self.check(
-            'sphinx_rtd_theme', '0.1.10a0',
-            'https://pypi.python.org/packages/da/6b/1b75f13d8aa3333f19c6cdf1f0bc9f52ea739cae464fbee050307c121857/sphinx_rtd_theme-0.1.10a0.tar.gz')
-        self.check(
-            'backports.ssl_match_hostname', '3.5.0.1',
-            'https://pypi.io/packages/source/b/backports.ssl_match_hostname/backports.ssl_match_hostname-3.5.0.1.tar.gz')
-
-    def test_bazaar_downloads(self):
-        self.check(
-            'libvterm', '681',
-            'http://www.leonerd.org.uk/code/libvterm/libvterm-0+bzr681.tar.gz')
+    # name.name_name-ver.ver
+    ('3to2', '1.1.1', 'https://pypi.python.org/packages/source/3/3to2/3to2-1.1.1.zip'),
+    ('mpmath', '0.19',
+     'https://pypi.python.org/packages/source/m/mpmath/mpmath-all-0.19.tar.gz'),
+    ('pandas', '0.16.0',
+     'https://pypi.python.org/packages/source/p/pandas/pandas-0.16.0.tar.gz#md5=bfe311f05dc0c351f8955fbd1e296e73'),
+    ('sphinx_rtd_theme', '0.1.10a0',
+     'https://pypi.python.org/packages/da/6b/1b75f13d8aa3333f19c6cdf1f0bc9f52ea739cae464fbee050307c121857/sphinx_rtd_theme-0.1.10a0.tar.gz'),
+    ('backports.ssl_match_hostname', '3.5.0.1',
+     'https://pypi.io/packages/source/b/backports.ssl_match_hostname/backports.ssl_match_hostname-3.5.0.1.tar.gz'),
+    # Common Repositories - bazaar downloads
+    ('libvterm', '681', 'http://www.leonerd.org.uk/code/libvterm/libvterm-0+bzr681.tar.gz'),
 
     # Common Tarball Formats
 
-    def test_version_only(self):
-        # ver.ver
-        self.check(
-            'eigen', '3.2.7',
-            'https://bitbucket.org/eigen/eigen/get/3.2.7.tar.bz2')
-        # ver.ver-ver
-        self.check(
-            'ImageMagick', '7.0.2-7',
-            'https://github.com/ImageMagick/ImageMagick/archive/7.0.2-7.tar.gz')
-        # vver.ver
-        self.check(
-            'CGNS', '3.3.0',
-            'https://github.com/CGNS/CGNS/archive/v3.3.0.tar.gz')
-        # vver_ver
-        self.check(
-            'luafilesystem', '1_6_3',
-            'https://github.com/keplerproject/luafilesystem/archive/v1_6_3.tar.gz')
+    # ver.ver
+    ('eigen', '3.2.7', 'https://bitbucket.org/eigen/eigen/get/3.2.7.tar.bz2'),
+    # ver.ver-ver
+    ('ImageMagick', '7.0.2-7', 'https://github.com/ImageMagick/ImageMagick/archive/7.0.2-7.tar.gz'),
+    # vver.ver
+    ('CGNS', '3.3.0', 'https://github.com/CGNS/CGNS/archive/v3.3.0.tar.gz'),
+    # vver_ver
+    ('luafilesystem', '1_6_3', 'https://github.com/keplerproject/luafilesystem/archive/v1_6_3.tar.gz'),
 
-    def test_no_separators(self):
-        # namever
-        self.check(
-            'turbolinux', '702',
-            'file://{0}/turbolinux702.tar.gz'.format(os.getcwd()))
-        self.check(
-            'nauty', '26r7',
-            'http://pallini.di.uniroma1.it/nauty26r7.tar.gz')
+    # No separators
+    ('turbolinux', '702', 'file://{0}/turbolinux702.tar.gz'.format(os.getcwd())),
+    ('nauty', '26r7', 'http://pallini.di.uniroma1.it/nauty26r7.tar.gz'),
+    # Dashes only
+    ('Trilinos', '12-10-1',
+     'https://github.com/trilinos/Trilinos/archive/trilinos-release-12-10-1.tar.gz'),
+    ('panda', '2016-03-07',
+     'http://comopt.ifi.uni-heidelberg.de/software/PANDA/downloads/panda-2016-03-07.tar'),
+    ('gts', '121130',
+     'http://gts.sourceforge.net/tarballs/gts-snapshot-121130.tar.gz'),
+    ('cdd', '061a',
+     'http://www.cs.mcgill.ca/~fukuda/download/cdd/cdd-061a.tar.gz'),
+    # Only underscores
+    ('tinyxml', '2_6_2',
+     'https://sourceforge.net/projects/tinyxml/files/tinyxml/2.6.2/tinyxml_2_6_2.tar.gz'),
+    ('boost', '1_55_0',
+     'http://downloads.sourceforge.net/project/boost/boost/1.55.0/boost_1_55_0.tar.bz2'),
+    ('yorick', '2_2_04',
+     'https://github.com/dhmunro/yorick/archive/y_2_2_04.tar.gz'),
+    ('tbb', '44_20160413',
+     'https://www.threadingbuildingblocks.org/sites/default/files/software_releases/source/tbb44_20160413oss_src.tgz'),
 
-    def test_dashes_only(self):
-        # name-name-ver-ver
-        self.check(
-            'Trilinos', '12-10-1',
-            'https://github.com/trilinos/Trilinos/archive/trilinos-release-12-10-1.tar.gz')
-        self.check(
-            'panda', '2016-03-07',
-            'http://comopt.ifi.uni-heidelberg.de/software/PANDA/downloads/panda-2016-03-07.tar')
-        self.check(
-            'gts', '121130',
-            'http://gts.sourceforge.net/tarballs/gts-snapshot-121130.tar.gz')
-        self.check(
-            'cdd', '061a',
-            'http://www.cs.mcgill.ca/~fukuda/download/cdd/cdd-061a.tar.gz')
+    # Only dots
 
-    def test_underscores_only(self):
-        # name_name_ver_ver
-        self.check(
-            'tinyxml', '2_6_2',
-            'https://sourceforge.net/projects/tinyxml/files/tinyxml/2.6.2/tinyxml_2_6_2.tar.gz')
-        self.check(
-            'boost', '1_55_0',
-            'http://downloads.sourceforge.net/project/boost/boost/1.55.0/boost_1_55_0.tar.bz2')
-        self.check(
-            'yorick', '2_2_04',
-            'https://github.com/dhmunro/yorick/archive/y_2_2_04.tar.gz')
-        # name_namever_ver
-        self.check(
-            'tbb', '44_20160413',
-            'https://www.threadingbuildingblocks.org/sites/default/files/software_releases/source/tbb44_20160413oss_src.tgz')
+    # name.name.ver.ver
+    ('prank', '150803', 'http://wasabiapp.org/download/prank/prank.source.150803.tgz'),
+    ('jpeg', '9b', 'http://www.ijg.org/files/jpegsrc.v9b.tar.gz'),
+    ('openjpeg', '2.1',
+     'https://github.com/uclouvain/openjpeg/archive/version.2.1.tar.gz'),
+    # name.namever.ver
+    ('atlas', '3.11.34',
+     'http://sourceforge.net/projects/math-atlas/files/Developer%20%28unstable%29/3.11.34/atlas3.11.34.tar.bz2'),
+    ('visit', '2.10.1', 'http://portal.nersc.gov/project/visit/releases/2.10.1/visit2.10.1.tar.gz'),
+    ('geant', '4.10.01.p03', 'http://geant4.cern.ch/support/source/geant4.10.01.p03.tar.gz'),
+    ('tcl', '8.6.5', 'http://prdownloads.sourceforge.net/tcl/tcl8.6.5-src.tar.gz'),
 
-    def test_dots_only(self):
-        # name.name.ver.ver
-        self.check(
-            'prank', '150803',
-            'http://wasabiapp.org/download/prank/prank.source.150803.tgz')
-        self.check(
-            'jpeg', '9b',
-            'http://www.ijg.org/files/jpegsrc.v9b.tar.gz')
-        self.check(
-            'openjpeg', '2.1',
-            'https://github.com/uclouvain/openjpeg/archive/version.2.1.tar.gz')
-        # name.namever.ver
-        self.check(
-            'atlas', '3.11.34',
-            'http://sourceforge.net/projects/math-atlas/files/Developer%20%28unstable%29/3.11.34/atlas3.11.34.tar.bz2')
-        self.check(
-            'visit', '2.10.1',
-            'http://portal.nersc.gov/project/visit/releases/2.10.1/visit2.10.1.tar.gz')
-        self.check(
-            'geant', '4.10.01.p03',
-            'http://geant4.cern.ch/support/source/geant4.10.01.p03.tar.gz')
-        self.check(
-            'tcl', '8.6.5',
-            'http://prdownloads.sourceforge.net/tcl/tcl8.6.5-src.tar.gz')
+    # Dash and dots
 
-    def test_dash_dot(self):
-        # name-name-ver.ver
-        # digit in name
-        self.check(
-            'm4', '1.4.17',
-            'https://ftp.gnu.org/gnu/m4/m4-1.4.17.tar.gz')
-        # letter in version
-        self.check(
-            'gmp', '6.0.0a',
-            'https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2')
-        # version starts with 'v'
-        self.check(
-            'LaunchMON', '1.0.2',
-            'https://github.com/LLNL/LaunchMON/releases/download/v1.0.2/launchmon-v1.0.2.tar.gz')
-        # name-ver-ver.ver
-        self.check(
-            'libedit', '20150325-3.1',
-            'http://thrysoee.dk/editline/libedit-20150325-3.1.tar.gz')
+    # name-name-ver.ver
+    # digit in name
+    ('m4', '1.4.17', 'https://ftp.gnu.org/gnu/m4/m4-1.4.17.tar.gz'),
+    # letter in version
+    ('gmp', '6.0.0a', 'https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2'),
+    # version starts with 'v'
+    ('LaunchMON', '1.0.2',
+     'https://github.com/LLNL/LaunchMON/releases/download/v1.0.2/launchmon-v1.0.2.tar.gz'),
+    # name-ver-ver.ver
+    ('libedit', '20150325-3.1', 'http://thrysoee.dk/editline/libedit-20150325-3.1.tar.gz'),
 
-    def test_dash_underscore(self):
-        # name-name-ver_ver
-        self.check(
-            'icu4c', '57_1',
-            'http://download.icu-project.org/files/icu4c/57.1/icu4c-57_1-src.tgz')
+    # Dash and unserscores
 
-    def test_underscore_dot(self):
-        # name_name_ver.ver
-        self.check(
-            'superlu_dist', '4.1',
-            'http://crd-legacy.lbl.gov/~xiaoye/SuperLU/superlu_dist_4.1.tar.gz')
-        self.check(
-            'pexsi', '0.9.0',
-            'https://math.berkeley.edu/~linlin/pexsi/download/pexsi_v0.9.0.tar.gz')
-        # name_name.ver.ver
-        self.check(
-            'fer', '696',
-            'ftp://ftp.pmel.noaa.gov/ferret/pub/source/fer_source.v696.tar.gz')
+    # name-name-ver_ver
+    ('icu4c', '57_1', 'http://download.icu-project.org/files/icu4c/57.1/icu4c-57_1-src.tgz'),
 
-    def test_dash_dot_dash_dot(self):
-        # name-name-ver.ver-ver.ver
-        self.check(
-            'sowing', '1.1.23-p1',
-            'http://ftp.mcs.anl.gov/pub/petsc/externalpackages/sowing-1.1.23-p1.tar.gz')
-        self.check(
-            'bib2xhtml', '3.0-15-gf506',
-            'http://www.spinellis.gr/sw/textproc/bib2xhtml/bib2xhtml-v3.0-15-gf506.tar.gz')
-        # namever.ver-ver.ver
-        self.check(
-            'go', '1.4-bootstrap-20161024',
-            'https://storage.googleapis.com/golang/go1.4-bootstrap-20161024.tar.gz')
+    # Underscores and dots
 
-    def test_underscore_dash_dot(self):
-        # name_name-ver.ver
-        self.check(
-            'the_silver_searcher', '0.32.0',
-            'http://geoff.greer.fm/ag/releases/the_silver_searcher-0.32.0.tar.gz')
-        self.check(
-            'sphinx_rtd_theme', '0.1.10a0',
-            'https://pypi.python.org/packages/source/s/sphinx_rtd_theme/sphinx_rtd_theme-0.1.10a0.tar.gz')
+    # name_name_ver.ver
+    ('superlu_dist', '4.1', 'http://crd-legacy.lbl.gov/~xiaoye/SuperLU/superlu_dist_4.1.tar.gz'),
+    ('pexsi', '0.9.0', 'https://math.berkeley.edu/~linlin/pexsi/download/pexsi_v0.9.0.tar.gz'),
+    # name_name.ver.ver
+    ('fer', '696', 'ftp://ftp.pmel.noaa.gov/ferret/pub/source/fer_source.v696.tar.gz'),
 
-    def test_dot_underscore_dot_dash_dot(self):
-        # name.name_ver.ver-ver.ver
-        self.check(
-            'TH.data', '1.0-8',
-            'https://cran.r-project.org/src/contrib/TH.data_1.0-8.tar.gz')
-        self.check(
-            'XML', '3.98-1.4',
-            'https://cran.r-project.org/src/contrib/XML_3.98-1.4.tar.gz')
+    # Dash dot dah dot
 
-    def test_dash_dot_underscore_dot(self):
-        # name-name-ver.ver_ver.ver
-        self.check(
-            'pypar', '2.1.5_108',
-            'https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/pypar/pypar-2.1.5_108.tgz')
-        # name-namever.ver_ver.ver
-        self.check(
-            'STAR-CCM+', '11.06.010_02',
-            'file://{0}/STAR-CCM+11.06.010_02_linux-x86_64.tar.gz'.format(os.getcwd()))
+    # name-name-ver.ver-ver.ver
+    ('sowing', '1.1.23-p1', 'http://ftp.mcs.anl.gov/pub/petsc/externalpackages/sowing-1.1.23-p1.tar.gz'),
+    ('bib2xhtml', '3.0-15-gf506', 'http://www.spinellis.gr/sw/textproc/bib2xhtml/bib2xhtml-v3.0-15-gf506.tar.gz'),
+    # namever.ver-ver.ver
+    ('go', '1.4-bootstrap-20161024', 'https://storage.googleapis.com/golang/go1.4-bootstrap-20161024.tar.gz'),
+
+    # Underscore dash dot
+
+    # name_name-ver.ver
+    ('the_silver_searcher', '0.32.0', 'http://geoff.greer.fm/ag/releases/the_silver_searcher-0.32.0.tar.gz'),
+    ('sphinx_rtd_theme', '0.1.10a0',
+     'https://pypi.python.org/packages/source/s/sphinx_rtd_theme/sphinx_rtd_theme-0.1.10a0.tar.gz'),
+
+    # Dot underscore dot dash dot
+
+    # name.name_ver.ver-ver.ver
+    ('TH.data', '1.0-8', 'https://cran.r-project.org/src/contrib/TH.data_1.0-8.tar.gz'),
+    ('XML', '3.98-1.4', 'https://cran.r-project.org/src/contrib/XML_3.98-1.4.tar.gz'),
+
+    # Dash dot underscore dot
+
+    # name-name-ver.ver_ver.ver
+    ('pypar', '2.1.5_108',
+     'https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/pypar/pypar-2.1.5_108.tgz'),
+    # name-namever.ver_ver.ver
+    ('STAR-CCM+', '11.06.010_02',
+     'file://{0}/STAR-CCM+11.06.010_02_linux-x86_64.tar.gz'.format(os.getcwd())),
 
     # Weird URLS
 
-    def test_version_in_path(self):
-        # github.com/repo/name/releases/download/name-vver/name
-        self.check(
-            'nextflow', '0.20.1',
-            'https://github.com/nextflow-io/nextflow/releases/download/v0.20.1/nextflow')
+    # github.com/repo/name/releases/download/name-vver/name
+    ('nextflow', '0.20.1', 'https://github.com/nextflow-io/nextflow/releases/download/v0.20.1/nextflow'),
+    # suffix queries
+    ('swiftsim', '0.3.0', 'http://gitlab.cosma.dur.ac.uk/swift/swiftsim/repository/archive.tar.gz?ref=v0.3.0'),
+    ('sionlib', '1.7.1', 'http://apps.fz-juelich.de/jsc/sionlib/download.php?version=1.7.1'),
+    # stem queries
+    ('slepc', '3.6.2', 'http://slepc.upv.es/download/download.php?filename=slepc-3.6.2.tar.gz'),
+    ('otf', '1.12.5salmon',
+     'http://wwwpub.zih.tu-dresden.de/%7Emlieber/dcount/dcount.php?package=otf&get=OTF-1.12.5salmon.tar.gz'),
+    # single character name
+    ('R', '3.3.2', 'https://cloud.r-project.org/src/base/R-3/R-3.3.2.tar.gz'),
+    # name starts with digit
+    ('3to2', '1.1.1', 'https://pypi.python.org/packages/source/3/3to2/3to2-1.1.1.zip'),
+    # plus in name
+    ('gtk+', '2.24.31', 'http://ftp.gnome.org/pub/gnome/sources/gtk+/2.24/gtk+-2.24.31.tar.xz'),
+    ('voro++', '0.4.6', 'http://math.lbl.gov/voro++/download/dir/voro++-0.4.6.tar.gz'),
+    # Name comes before download.php
+    ('sionlib', '1.7.1', 'http://apps.fz-juelich.de/jsc/sionlib/download.php?version=1.7.1'),
+    # Ignore download.php
+    ('slepc', '3.6.2', 'http://slepc.upv.es/download/download.php?filename=slepc-3.6.2.tar.gz'),
+    ('ScientificPython', '2.8.1',
+     'https://sourcesup.renater.fr/frs/download.php/file/4411/ScientificPython-2.8.1.tar.gz'),
+    # gloox beta style
+    ('gloox', '1.0-beta7', 'http://camaya.net/download/gloox-1.0-beta7.tar.bz2'),
+    # sphinx beta style
+    ('sphinx', '1.10-beta', 'http://sphinxsearch.com/downloads/sphinx-1.10-beta.tar.gz'),
+    # ruby version style
+    ('ruby', '1.9.1-p243', 'ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.1-p243.tar.gz'),
+    # rc style
+    ('libvorbis', '1.2.2rc1', 'http://downloads.xiph.org/releases/vorbis/libvorbis-1.2.2rc1.tar.bz2'),
+    # dash rc style
+    ('js', '1.8.0-rc1', 'http://ftp.mozilla.org/pub/mozilla.org/js/js-1.8.0-rc1.tar.gz'),
+    # apache version style
+    ('apache-cassandra', '1.2.0-rc2',
+     'http://www.apache.org/dyn/closer.cgi?path=/cassandra/1.2.0/apache-cassandra-1.2.0-rc2-bin.tar.gz'),
+    # xaw3d version
+    ('Xaw3d', '1.5E', 'ftp://ftp.visi.com/users/hawkeyd/X/Xaw3d-1.5E.tar.gz'),
+    # fann version
+    ('fann', '2.1.0beta', 'http://downloads.sourceforge.net/project/fann/fann/2.1.0beta/fann-2.1.0beta.zip'),
+    # imap version
+    ('imap', '2007f', 'ftp://ftp.cac.washington.edu/imap/imap-2007f.tar.gz'),
+    # suite3270 version
+    ('suite3270', '3.3.12ga7',
+     'http://sourceforge.net/projects/x3270/files/x3270/3.3.12ga7/suite3270-3.3.12ga7-src.tgz'),
+    # scalasca version
+    ('cube', '4.2.3', 'http://apps.fz-juelich.de/scalasca/releases/cube/4.2/dist/cube-4.2.3.tar.gz'),
+    ('cube', '4.3-TP1', 'http://apps.fz-juelich.de/scalasca/releases/cube/4.3/dist/cube-4.3-TP1.tar.gz'),
+    # github raw url
+    ('CLAMR', '2.0.7', 'https://github.com/losalamos/CLAMR/blob/packages/PowerParser_v2.0.7.tgz?raw=true'),
+    # luaposix version
+    ('luaposix', '33.4.0', 'https://github.com/luaposix/luaposix/archive/release-v33.4.0.tar.gz'),
+    # nco version
+    ('nco', '4.6.2-beta03', 'https://github.com/nco/nco/archive/4.6.2-beta03.tar.gz'),
+    ('nco', '4.6.3-alpha04', 'https://github.com/nco/nco/archive/4.6.3-alpha04.tar.gz'),
+])
+def test_url_parse_name_and_version(name, version, url):
+    # Make sure correct name and version are extracted.
+    parsed_name, parsed_version = parse_name_and_version(url)
+    assert parsed_name == name
+    assert parsed_version == Version(version)
 
-    def test_suffix_queries(self):
-        self.check(
-            'swiftsim', '0.3.0',
-            'http://gitlab.cosma.dur.ac.uk/swift/swiftsim/repository/archive.tar.gz?ref=v0.3.0')
-        self.check(
-            'sionlib', '1.7.1',
-            'http://apps.fz-juelich.de/jsc/sionlib/download.php?version=1.7.1')
+    # Make sure Spack formulates the right URL when we try to
+    # build one with a specific version.
+    assert url == substitute_version(url, version)
 
-    def test_stem_queries(self):
-        self.check(
-            'slepc', '3.6.2',
-            'http://slepc.upv.es/download/download.php?filename=slepc-3.6.2.tar.gz')
-        self.check(
-            'otf', '1.12.5salmon',
-            'http://wwwpub.zih.tu-dresden.de/%7Emlieber/dcount/dcount.php?package=otf&get=OTF-1.12.5salmon.tar.gz')
 
-    def test_single_character_name(self):
-        self.check(
-            'R', '3.3.2',
-            'https://cloud.r-project.org/src/base/R-3/R-3.3.2.tar.gz')
-
-    def test_single_digit_version(self):
-        pass
-
-    def test_name_starts_with_digit(self):
-        self.check(
-            '3to2', '1.1.1',
-            'https://pypi.python.org/packages/source/3/3to2/3to2-1.1.1.zip')
-
-    def plus_in_name(self):
-        self.check(
-            'gtk+', '2.24.31',
-            'http://ftp.gnome.org/pub/gnome/sources/gtk+/2.24/gtk+-2.24.31.tar.xz')
-        self.check(
-            'voro++', '0.4.6',
-            'http://math.lbl.gov/voro++/download/dir/voro++-0.4.6.tar.gz')
-
-    def test_no_version(self):
-        self.assert_not_detected('http://www.netlib.org/blas/blast-forum/cblas.tgz')
-        self.assert_not_detected('http://www.netlib.org/voronoi/triangle.zip')
-
-    def test_download_php(self):
-        # Name comes before download.php
-        self.check(
-            'sionlib', '1.7.1',
-            'http://apps.fz-juelich.de/jsc/sionlib/download.php?version=1.7.1')
-        # Ignore download.php
-        self.check(
-            'slepc', '3.6.2',
-            'http://slepc.upv.es/download/download.php?filename=slepc-3.6.2.tar.gz')
-        self.check(
-            'ScientificPython', '2.8.1',
-            'https://sourcesup.renater.fr/frs/download.php/file/4411/ScientificPython-2.8.1.tar.gz')
-
-    def test_gloox_beta_style(self):
-        self.check(
-            'gloox', '1.0-beta7',
-            'http://camaya.net/download/gloox-1.0-beta7.tar.bz2')
-
-    def test_sphinx_beta_style(self):
-        self.check(
-            'sphinx', '1.10-beta',
-            'http://sphinxsearch.com/downloads/sphinx-1.10-beta.tar.gz')
-
-    def test_ruby_version_style(self):
-        self.check(
-            'ruby', '1.9.1-p243',
-            'ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.1-p243.tar.gz')
-
-    def test_rc_style(self):
-        self.check(
-            'libvorbis', '1.2.2rc1',
-            'http://downloads.xiph.org/releases/vorbis/libvorbis-1.2.2rc1.tar.bz2')
-
-    def test_dash_rc_style(self):
-        self.check(
-            'js', '1.8.0-rc1',
-            'http://ftp.mozilla.org/pub/mozilla.org/js/js-1.8.0-rc1.tar.gz')
-
-    def test_apache_version_style(self):
-        self.check(
-            'apache-cassandra', '1.2.0-rc2',
-            'http://www.apache.org/dyn/closer.cgi?path=/cassandra/1.2.0/apache-cassandra-1.2.0-rc2-bin.tar.gz')
-
-    def test_xaw3d_version(self):
-        self.check(
-            'Xaw3d', '1.5E',
-            'ftp://ftp.visi.com/users/hawkeyd/X/Xaw3d-1.5E.tar.gz')
-
-    def test_fann_version(self):
-        self.check(
-            'fann', '2.1.0beta',
-            'http://downloads.sourceforge.net/project/fann/fann/2.1.0beta/fann-2.1.0beta.zip')
-
-    def test_imap_version(self):
-        self.check(
-            'imap', '2007f',
-            'ftp://ftp.cac.washington.edu/imap/imap-2007f.tar.gz')
-
-    def test_suite3270_version(self):
-        self.check(
-            'suite3270', '3.3.12ga7',
-            'http://sourceforge.net/projects/x3270/files/x3270/3.3.12ga7/suite3270-3.3.12ga7-src.tgz')
-
-    def test_scalasca_version(self):
-        self.check(
-            'cube', '4.2.3',
-            'http://apps.fz-juelich.de/scalasca/releases/cube/4.2/dist/cube-4.2.3.tar.gz')
-        self.check(
-            'cube', '4.3-TP1',
-            'http://apps.fz-juelich.de/scalasca/releases/cube/4.3/dist/cube-4.3-TP1.tar.gz')
-
-    def test_github_raw_url(self):
-        self.check(
-            'CLAMR', '2.0.7',
-            'https://github.com/losalamos/CLAMR/blob/packages/PowerParser_v2.0.7.tgz?raw=true')
-
-    def test_luaposix_version(self):
-        self.check(
-            'luaposix', '33.4.0',
-            'https://github.com/luaposix/luaposix/archive/release-v33.4.0.tar.gz')
-
-    def test_nco_version(self):
-        self.check(
-            'nco', '4.6.2-beta03',
-            'https://github.com/nco/nco/archive/4.6.2-beta03.tar.gz')
-        self.check(
-            'nco', '4.6.3-alpha04',
-            'https://github.com/nco/nco/archive/4.6.3-alpha04.tar.gz')
+@pytest.mark.parametrize('not_detectable_url', [
+    'http://www.netlib.org/blas/blast-forum/cblas.tgz',
+    'http://www.netlib.org/voronoi/triangle.zip',
+])
+def test_no_version(not_detectable_url):
+    with pytest.raises(UndetectableVersionError):
+        parse_name_and_version(not_detectable_url)