Tests: Add resolver/test_simple and the resolver test infrastructure

4 files changed, 224 insertions, 0 deletions

diff --git a/pym/portage/tests/resolver/ResolverPlayground.py b/pym/portage/tests/resolver/ResolverPlayground.py
new file mode 100644
index 00000000..56cdb5f4
--- /dev/null
+++ b/pym/portage/tests/resolver/ResolverPlayground.py
@@ -0,0 +1,190 @@
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+from itertools import chain
+import tempfile
+import portage
+from portage import os
+from portage.dbapi.vartree import vartree
+from portage.dbapi.porttree import portagetree
+from portage.dbapi.bintree import binarytree
+from portage.dep import Atom
+from portage.package.ebuild.config import config
+from portage.sets import load_default_config
+from portage.versions import catsplit
+
+from _emerge.create_depgraph_params import create_depgraph_params
+from _emerge.depgraph import backtrack_depgraph
+from _emerge.RootConfig import RootConfig
+
+class ResolverPlayground(object):
+	"""
+	This class help to create the necessary files on disk and
+	the needed settings instances, etc. for the resolver to do
+	it's work.
+	"""
+	
+	def __init__(self, ebuilds={}, installed={}, profile={}):
+		"""
+		ebuilds: cpv -> metadata mapping simulating avaiable ebuilds. 
+		installed: cpv -> metadata mapping simulating installed packages.
+			If a metadata key is missing, it gets a default value.
+		profile: settings defined by the profile.
+		"""
+		self.root = tempfile.mkdtemp() + os.path.sep
+		self.portdir = os.path.join(self.root, "usr/portage")
+		self.vdbdir = os.path.join(self.root, "var/db/pkg")
+		os.makedirs(self.portdir)
+		os.makedirs(self.vdbdir)
+		
+		self._create_ebuilds(ebuilds)
+		self._create_installed(installed)
+		self._create_profile(ebuilds, installed, profile)
+		
+		self.settings, self.trees = self._load_config()
+		
+		self._create_ebuild_manifests(ebuilds)
+
+	def _create_ebuilds(self, ebuilds):
+		for cpv in ebuilds:
+			a = Atom("=" + cpv)
+			ebuild_dir = os.path.join(self.portdir, a.cp)
+			ebuild_path = os.path.join(ebuild_dir, a.cpv.split("/")[1] + ".ebuild")
+			try:
+				os.makedirs(ebuild_dir)
+			except os.error:
+				pass
+			
+			metadata = ebuilds[cpv]
+			eapi = metadata.get("EAPI", 0)
+			slot = metadata.get("SLOT", 0)
+			keywords = metadata.get("KEYWORDS", "x86")
+			iuse = metadata.get("IUSE", "")
+			depend = metadata.get("DEPEND", "")
+			rdepend = metadata.get("RDEPEND", None)
+			pdepend = metadata.get("PDEPEND", None)
+
+			f = open(ebuild_path, "w")
+			f.write('EAPI="' + str(eapi) + '"\n')
+			f.write('SLOT="' + str(slot) + '"\n')
+			f.write('KEYWORDS="' + str(keywords) + '"\n')
+			f.write('IUSE="' + str(iuse) + '"\n')
+			f.write('DEPEND="' + str(depend) + '"\n')
+			if rdepend is not None:
+				f.write('RDEPEND="' + str(rdepend) + '"\n')
+			if rdepend is not None:
+				f.write('PDEPEND="' + str(pdepend) + '"\n')
+			f.close()
+
+	def _create_ebuild_manifests(self, ebuilds):
+		for cpv in ebuilds:
+			a = Atom("=" + cpv)
+			ebuild_dir = os.path.join(self.portdir, a.cp)
+			ebuild_path = os.path.join(ebuild_dir, a.cpv.split("/")[1] + ".ebuild")
+			
+			portage.util.noiselimit = -1
+			tmpsettings = config(clone=self.settings)
+			portdb = self.trees[self.root]["porttree"].dbapi
+			portage.doebuild(ebuild_path, "digest", self.root, tmpsettings,
+				tree="porttree", mydbapi=portdb)
+			portage.util.noiselimit = 0
+		
+	def _create_installed(self, installed):
+		for cpv in installed:
+			a = Atom("=" + cpv)
+			vdb_pkg_dir = os.path.join(self.vdbdir, a.cpv)
+			try:
+				os.makedirs(vdb_pkg_dir)
+			except os.error:
+				pass
+
+			metadata = installed[cpv]
+			eapi = metadata.get("EAPI", 0)
+			slot = metadata.get("SLOT", 0)
+			keywords = metadata.get("KEYWORDS", "~x86")
+			iuse = metadata.get("IUSE", "")
+			use = metadata.get("USE", "")
+			depend = metadata.get("DEPEND", "")
+			rdepend = metadata.get("RDEPEND", None)
+			pdepend = metadata.get("PDEPEND", None)
+			
+			def write_key(key, value):
+				f = open(os.path.join(vdb_pkg_dir, key), "w")
+				f.write(str(value) + "\n")
+				f.close()
+			
+			write_key("EAPI", eapi)
+			write_key("SLOT", slot)
+			write_key("KEYWORDS", keywords)
+			write_key("IUSE", iuse)
+			write_key("USE", use)
+			write_key("DEPEND", depend)
+			if rdepend is not None:
+				write_key("RDEPEND", rdepend)
+			if rdepend is not None:
+				write_key("PDEPEND", pdepend)
+
+	def _create_profile(self, ebuilds, installed, profile):
+		#Create $PORTDIR/profiles/categories
+		categories = set()
+		for cpv in chain(ebuilds.keys(), installed.keys()):
+			categories.add(catsplit(cpv)[0])
+		
+		profile_dir = os.path.join(self.portdir, "profiles")
+		try:
+			os.makedirs(profile_dir)
+		except os.error:
+			pass
+		
+		categories_file = os.path.join(profile_dir, "categories")
+		
+		f = open(categories_file, "w")
+		for cat in categories:
+			f.write(cat + "\n")
+		f.close()
+		
+		#Create $PORTDIR/eclass (we fail to digest the ebuilds if it's not there)
+		os.makedirs(os.path.join(self.portdir, "eclass"))
+		
+		if profile:
+			#This is meant to allow the consumer to set up his own profile,
+			#with package.mask and what not.
+			raise NotImplentedError()
+
+	def _load_config(self):
+		env = { "PORTDIR": self.portdir, "ROOT": self.root, "ACCEPT_KEYWORDS": "x86"}
+		settings = config(config_root=self.root, target_root=self.root, local_config=False, env=env)
+		settings.lock()
+
+		trees = {
+			self.root: {
+					"virtuals": settings.getvirtuals(),
+					"vartree": vartree(self.root, categories=settings.categories, settings=settings),
+					"porttree": portagetree(self.root, settings=settings),
+					"bintree": binarytree(self.root, os.path.join(self.root, "usr/portage/packages"), settings=settings)
+				}
+			}
+
+		for root, root_trees in trees.items():
+			settings = root_trees["vartree"].settings
+			settings._init_dirs()
+			setconfig = load_default_config(settings, root_trees)
+			root_trees["root_config"] = RootConfig(settings, root_trees, setconfig)
+		
+		return settings, trees
+
+	def run(self, myfiles, myopts={}, myaction=None):
+		myopts["--pretend"] = True
+		myopts["--quiet"] = True
+		myopts["--root"] = self.root
+		myopts["--config-root"] = self.root
+		myparams = create_depgraph_params(myopts, myaction)
+		success, mydepgraph, favorites = backtrack_depgraph(
+			self.settings, self.trees, myopts, myparams, myaction, myfiles, None)
+
+		if success:
+			mergelist = [x.cpv for x in mydepgraph._dynamic_config._serialized_tasks_cache]
+			return True, mergelist
+		else:
+			#TODO: Use mydepgraph.display_problems() to return a useful error message
+			return False, None
diff --git a/pym/portage/tests/resolver/__init__.py b/pym/portage/tests/resolver/__init__.py
new file mode 100644
index 00000000..21a391ae
--- /dev/null
+++ b/pym/portage/tests/resolver/__init__.py
@@ -0,0 +1,2 @@
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
diff --git a/pym/portage/tests/resolver/__test__ b/pym/portage/tests/resolver/__test__
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/pym/portage/tests/resolver/__test__
diff --git a/pym/portage/tests/resolver/test_simple.py b/pym/portage/tests/resolver/test_simple.py
new file mode 100644
index 00000000..d178e7fb
--- /dev/null
+++ b/pym/portage/tests/resolver/test_simple.py
@@ -0,0 +1,32 @@
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+from portage.tests import TestCase
+from portage.tests.resolver.ResolverPlayground import ResolverPlayground
+
+class SimpleResolverTestCase(TestCase):
+
+	def testSimple(self):
+		ebuilds = {
+			"dev-libs/A-1": {}, 
+			"dev-libs/A-2": { "KEYWORDS": "~x86" },
+			"dev-libs/B-1.2": {},
+			}
+		installed = {
+			"dev-libs/B-1.1": {},
+			}
+
+		requests = (
+				(["dev-libs/A"], {}, None, True, ["dev-libs/A-1"]),
+				(["=dev-libs/A-2"], {}, None, False, None),
+				(["dev-libs/B"], {"--noreplace": True}, None, True, []),
+				(["dev-libs/B"], {"--update": True}, None, True, ["dev-libs/B-1.2"]),
+			)
+
+		playground = ResolverPlayground(ebuilds=ebuilds, installed=installed)
+
+		for atoms, options, action, expected_result, expected_mergelist in requests:
+			success, mergelist = playground.run(atoms, options, action)
+			self.assertEqual(success, expected_result)
+			if success:
+				self.assertEqual(mergelist, expected_mergelist)