mirror of https://github.com/python/cpython
311 lines
11 KiB
Python
311 lines
11 KiB
Python
"""Tests for packaging.depgraph """
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import os
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import re
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import sys
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from io import StringIO
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from packaging import depgraph
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from packaging.database import get_distribution, enable_cache, disable_cache
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from packaging.tests import unittest, support
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from packaging.tests.support import requires_zlib
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class DepGraphTestCase(support.LoggingCatcher,
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unittest.TestCase):
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DISTROS_DIST = ('choxie', 'grammar', 'towel-stuff')
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DISTROS_EGG = ('bacon', 'banana', 'strawberry', 'cheese')
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BAD_EGGS = ('nut',)
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EDGE = re.compile(
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r'"(?P<from>.*)" -> "(?P<to>.*)" \[label="(?P<label>.*)"\]')
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def checkLists(self, l1, l2):
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""" Compare two lists without taking the order into consideration """
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self.assertListEqual(sorted(l1), sorted(l2))
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def setUp(self):
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super(DepGraphTestCase, self).setUp()
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path = os.path.join(os.path.dirname(__file__), 'fake_dists')
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path = os.path.abspath(path)
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sys.path.insert(0, path)
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self.addCleanup(sys.path.remove, path)
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self.addCleanup(enable_cache)
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disable_cache()
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def test_generate_graph(self):
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dists = []
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for name in self.DISTROS_DIST:
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dist = get_distribution(name)
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self.assertNotEqual(dist, None)
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dists.append(dist)
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choxie, grammar, towel = dists
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graph = depgraph.generate_graph(dists)
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deps = [(x.name, y) for x, y in graph.adjacency_list[choxie]]
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self.checkLists([('towel-stuff', 'towel-stuff (0.1)')], deps)
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self.assertIn(choxie, graph.reverse_list[towel])
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self.checkLists(graph.missing[choxie], ['nut'])
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deps = [(x.name, y) for x, y in graph.adjacency_list[grammar]]
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self.checkLists([], deps)
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self.checkLists(graph.missing[grammar], ['truffles (>=1.2)'])
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deps = [(x.name, y) for x, y in graph.adjacency_list[towel]]
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self.checkLists([], deps)
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self.checkLists(graph.missing[towel], ['bacon (<=0.2)'])
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@requires_zlib
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def test_generate_graph_egg(self):
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dists = []
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for name in self.DISTROS_DIST + self.DISTROS_EGG:
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dist = get_distribution(name, use_egg_info=True)
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self.assertNotEqual(dist, None)
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dists.append(dist)
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choxie, grammar, towel, bacon, banana, strawberry, cheese = dists
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graph = depgraph.generate_graph(dists)
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deps = [(x.name, y) for x, y in graph.adjacency_list[choxie]]
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self.checkLists([('towel-stuff', 'towel-stuff (0.1)')], deps)
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self.assertIn(choxie, graph.reverse_list[towel])
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self.checkLists(graph.missing[choxie], ['nut'])
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deps = [(x.name, y) for x, y in graph.adjacency_list[grammar]]
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self.checkLists([('bacon', 'truffles (>=1.2)')], deps)
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self.checkLists(graph.missing[grammar], [])
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self.assertIn(grammar, graph.reverse_list[bacon])
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deps = [(x.name, y) for x, y in graph.adjacency_list[towel]]
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self.checkLists([('bacon', 'bacon (<=0.2)')], deps)
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self.checkLists(graph.missing[towel], [])
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self.assertIn(towel, graph.reverse_list[bacon])
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deps = [(x.name, y) for x, y in graph.adjacency_list[bacon]]
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self.checkLists([], deps)
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self.checkLists(graph.missing[bacon], [])
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deps = [(x.name, y) for x, y in graph.adjacency_list[banana]]
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self.checkLists([('strawberry', 'strawberry (>=0.5)')], deps)
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self.checkLists(graph.missing[banana], [])
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self.assertIn(banana, graph.reverse_list[strawberry])
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deps = [(x.name, y) for x, y in graph.adjacency_list[strawberry]]
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self.checkLists([], deps)
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self.checkLists(graph.missing[strawberry], [])
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deps = [(x.name, y) for x, y in graph.adjacency_list[cheese]]
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self.checkLists([], deps)
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self.checkLists(graph.missing[cheese], [])
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def test_dependent_dists(self):
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dists = []
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for name in self.DISTROS_DIST:
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dist = get_distribution(name)
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self.assertNotEqual(dist, None)
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dists.append(dist)
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choxie, grammar, towel = dists
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deps = [d.name for d in depgraph.dependent_dists(dists, choxie)]
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self.checkLists([], deps)
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deps = [d.name for d in depgraph.dependent_dists(dists, grammar)]
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self.checkLists([], deps)
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deps = [d.name for d in depgraph.dependent_dists(dists, towel)]
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self.checkLists(['choxie'], deps)
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@requires_zlib
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def test_dependent_dists_egg(self):
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dists = []
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for name in self.DISTROS_DIST + self.DISTROS_EGG:
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dist = get_distribution(name, use_egg_info=True)
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self.assertNotEqual(dist, None)
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dists.append(dist)
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choxie, grammar, towel, bacon, banana, strawberry, cheese = dists
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deps = [d.name for d in depgraph.dependent_dists(dists, choxie)]
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self.checkLists([], deps)
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deps = [d.name for d in depgraph.dependent_dists(dists, grammar)]
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self.checkLists([], deps)
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deps = [d.name for d in depgraph.dependent_dists(dists, towel)]
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self.checkLists(['choxie'], deps)
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deps = [d.name for d in depgraph.dependent_dists(dists, bacon)]
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self.checkLists(['choxie', 'towel-stuff', 'grammar'], deps)
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deps = [d.name for d in depgraph.dependent_dists(dists, strawberry)]
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self.checkLists(['banana'], deps)
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deps = [d.name for d in depgraph.dependent_dists(dists, cheese)]
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self.checkLists([], deps)
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@requires_zlib
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def test_graph_to_dot(self):
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expected = (
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('towel-stuff', 'bacon', 'bacon (<=0.2)'),
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('grammar', 'bacon', 'truffles (>=1.2)'),
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('choxie', 'towel-stuff', 'towel-stuff (0.1)'),
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('banana', 'strawberry', 'strawberry (>=0.5)'),
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)
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dists = []
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for name in self.DISTROS_DIST + self.DISTROS_EGG:
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dist = get_distribution(name, use_egg_info=True)
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self.assertNotEqual(dist, None)
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dists.append(dist)
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graph = depgraph.generate_graph(dists)
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buf = StringIO()
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depgraph.graph_to_dot(graph, buf)
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buf.seek(0)
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matches = []
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lines = buf.readlines()
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for line in lines[1:-1]: # skip the first and the last lines
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if line[-1] == '\n':
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line = line[:-1]
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match = self.EDGE.match(line.strip())
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self.assertIsNot(match, None)
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matches.append(match.groups())
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self.checkLists(matches, expected)
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@requires_zlib
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def test_graph_disconnected_to_dot(self):
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dependencies_expected = (
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('towel-stuff', 'bacon', 'bacon (<=0.2)'),
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('grammar', 'bacon', 'truffles (>=1.2)'),
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('choxie', 'towel-stuff', 'towel-stuff (0.1)'),
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('banana', 'strawberry', 'strawberry (>=0.5)'),
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)
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disconnected_expected = ('cheese', 'bacon', 'strawberry')
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dists = []
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for name in self.DISTROS_DIST + self.DISTROS_EGG:
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dist = get_distribution(name, use_egg_info=True)
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self.assertNotEqual(dist, None)
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dists.append(dist)
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graph = depgraph.generate_graph(dists)
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buf = StringIO()
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depgraph.graph_to_dot(graph, buf, skip_disconnected=False)
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buf.seek(0)
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lines = buf.readlines()
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dependencies_lines = []
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disconnected_lines = []
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# First sort output lines into dependencies and disconnected lines.
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# We also skip the attribute lines, and don't include the "{" and "}"
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# lines.
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disconnected_active = False
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for line in lines[1:-1]: # Skip first and last line
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if line.startswith('subgraph disconnected'):
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disconnected_active = True
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continue
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if line.startswith('}') and disconnected_active:
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disconnected_active = False
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continue
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if disconnected_active:
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# Skip the 'label = "Disconnected"', etc. attribute lines.
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if ' = ' not in line:
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disconnected_lines.append(line)
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else:
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dependencies_lines.append(line)
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dependencies_matches = []
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for line in dependencies_lines:
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if line[-1] == '\n':
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line = line[:-1]
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match = self.EDGE.match(line.strip())
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self.assertIsNot(match, None)
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dependencies_matches.append(match.groups())
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disconnected_matches = []
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for line in disconnected_lines:
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if line[-1] == '\n':
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line = line[:-1]
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line = line.strip('"')
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disconnected_matches.append(line)
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self.checkLists(dependencies_matches, dependencies_expected)
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self.checkLists(disconnected_matches, disconnected_expected)
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@requires_zlib
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def test_graph_bad_version_to_dot(self):
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expected = (
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('towel-stuff', 'bacon', 'bacon (<=0.2)'),
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('grammar', 'bacon', 'truffles (>=1.2)'),
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('choxie', 'towel-stuff', 'towel-stuff (0.1)'),
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('banana', 'strawberry', 'strawberry (>=0.5)'),
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)
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dists = []
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for name in self.DISTROS_DIST + self.DISTROS_EGG + self.BAD_EGGS:
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dist = get_distribution(name, use_egg_info=True)
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self.assertNotEqual(dist, None)
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dists.append(dist)
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graph = depgraph.generate_graph(dists)
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buf = StringIO()
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depgraph.graph_to_dot(graph, buf)
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buf.seek(0)
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matches = []
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lines = buf.readlines()
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for line in lines[1:-1]: # skip the first and the last lines
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if line[-1] == '\n':
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line = line[:-1]
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match = self.EDGE.match(line.strip())
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self.assertIsNot(match, None)
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matches.append(match.groups())
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self.checkLists(matches, expected)
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@requires_zlib
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def test_repr(self):
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dists = []
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for name in self.DISTROS_DIST + self.DISTROS_EGG + self.BAD_EGGS:
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dist = get_distribution(name, use_egg_info=True)
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self.assertNotEqual(dist, None)
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dists.append(dist)
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graph = depgraph.generate_graph(dists)
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self.assertTrue(repr(graph))
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@requires_zlib
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def test_main(self):
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tempout = StringIO()
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old = sys.stdout
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sys.stdout = tempout
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oldargv = sys.argv[:]
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sys.argv[:] = ['script.py']
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try:
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try:
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depgraph.main()
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except SystemExit:
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pass
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finally:
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sys.stdout = old
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sys.argv[:] = oldargv
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# checks what main did XXX could do more here
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tempout.seek(0)
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res = tempout.read()
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self.assertIn('towel', res)
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def test_suite():
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return unittest.makeSuite(DepGraphTestCase)
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if __name__ == "__main__":
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unittest.main(defaultTest="test_suite")
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