Recipe package system.

recipe_engine/third_party/setuptools/tests/test_dist_info.py

+"""Test .dist-info style distributions.
+"""
+import os
+import shutil
+import tempfile
+import unittest
+import textwrap
+
+try:
+    import ast
+except:
+    pass
+
+import pkg_resources
+
+from setuptools.tests.py26compat import skipIf
+
+def DALS(s):
+    "dedent and left-strip"
+    return textwrap.dedent(s).lstrip()
+
+class TestDistInfo(unittest.TestCase):
+
+    def test_distinfo(self):
+        dists = {}
+        for d in pkg_resources.find_distributions(self.tmpdir):
+            dists[d.project_name] = d
+
+        assert len(dists) == 2, dists
+
+        unversioned = dists['UnversionedDistribution']
+        versioned = dists['VersionedDistribution']
+
+        assert versioned.version == '2.718' # from filename
+        assert unversioned.version == '0.3' # from METADATA
+
+    @skipIf('ast' not in globals(),
+        "ast is used to test conditional dependencies (Python >= 2.6)")
+    def test_conditional_dependencies(self):
+        requires = [pkg_resources.Requirement.parse('splort==4'),
+                    pkg_resources.Requirement.parse('quux>=1.1')]
+
+        for d in pkg_resources.find_distributions(self.tmpdir):
+            self.assertEqual(d.requires(), requires[:1])
+            self.assertEqual(d.requires(extras=('baz',)), requires)
+            self.assertEqual(d.extras, ['baz'])
+
+    def setUp(self):
+        self.tmpdir = tempfile.mkdtemp()
+        versioned = os.path.join(self.tmpdir,
+                                 'VersionedDistribution-2.718.dist-info')
+        os.mkdir(versioned)
+        metadata_file = open(os.path.join(versioned, 'METADATA'), 'w+')
+        try:
+            metadata_file.write(DALS(
+                """
+                Metadata-Version: 1.2
+                Name: VersionedDistribution
+                Requires-Dist: splort (4)
+                Provides-Extra: baz
+                Requires-Dist: quux (>=1.1); extra == 'baz'
+                """))
+        finally:
+            metadata_file.close()
+        unversioned = os.path.join(self.tmpdir,
+                                   'UnversionedDistribution.dist-info')
+        os.mkdir(unversioned)
+        metadata_file = open(os.path.join(unversioned, 'METADATA'), 'w+')
+        try:
+            metadata_file.write(DALS(
+                """
+                Metadata-Version: 1.2
+                Name: UnversionedDistribution
+                Version: 0.3
+                Requires-Dist: splort (==4)
+                Provides-Extra: baz
+                Requires-Dist: quux (>=1.1); extra == 'baz'
+                """))
+        finally:
+            metadata_file.close()
+
+    def tearDown(self):
+        shutil.rmtree(self.tmpdir)