bitbake-selftest: Add layers module tests

The tests cover both the layers/layerindex and the layers/manager.

Both sets of tests included network connection components.  They honor the
BB_SKIP_NETTESTS='yes' if networking is not available, to prevent test
failures.

Tests Implemented:
 layers/layerindex:
  - Branch, LayerItem, LayerBranch, LayerDependency, Recipe, Machine and
    Distro objects
  - LayerIndex setup using the layers.openembedded.org restapi
  - LayerIndex storing and retrieving from a file
  - LayerIndex verify dependency resolution ordering

 layers/manager:
  - manager basic functionality
  - manager and fetcher plugin setup/fetch/unpack of a remote repository
  - fetcher plugin generating a list of downloaded layers

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>

4 files changed, 531 insertions, 1 deletions

diff --git a/bin/bitbake-selftest b/bin/bitbake-selftest
index afe1603d0..9ad42ab10 100755
--- a/bin/bitbake-selftest
+++ b/bin/bitbake-selftest
@@ -22,6 +22,7 @@ sys.path.insert(0, os.path.join(os.path.dirname(os.path.dirname(__file__)), 'lib
 import unittest
 try:
     import bb
+    import layers
 except RuntimeError as exc:
     sys.exit(str(exc))
 
@@ -31,7 +32,9 @@ tests = ["bb.tests.codeparser",
          "bb.tests.event",
          "bb.tests.fetch",
          "bb.tests.parse",
-         "bb.tests.utils"]
+         "bb.tests.utils",
+         "layers.tests.layerindex",
+         "layers.tests.manager"]
 
 for t in tests:
     t = '.'.join(t.split('.')[:3])
diff --git a/lib/layers/tests/__init__.py b/lib/layers/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/lib/layers/tests/__init__.py
diff --git a/lib/layers/tests/layerindex.py b/lib/layers/tests/layerindex.py
new file mode 100644
index 000000000..c01bdb3e9
--- /dev/null
+++ b/lib/layers/tests/layerindex.py
@@ -0,0 +1,372 @@
+# Copyright (C) 2017 Wind River Systems, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+import unittest
+import tempfile
+import os
+import bb
+
+from layers import layerindex
+
+import logging
+
+class LayersTest(unittest.TestCase):
+
+    def setUp(self):
+        self.origdir = os.getcwd()
+        self.d = bb.data.init()
+        self.tempdir = tempfile.mkdtemp()
+        self.dldir = os.path.join(self.tempdir, "download")
+        os.mkdir(self.dldir)
+        self.d.setVar("DL_DIR", self.dldir)
+        self.unpackdir = os.path.join(self.tempdir, "unpacked")
+        os.mkdir(self.unpackdir)
+        persistdir = os.path.join(self.tempdir, "persistdata")
+        self.d.setVar("PERSISTENT_DIR", persistdir)
+        self.logger = logging.getLogger("BitBake")
+
+    def tearDown(self):
+        os.chdir(self.origdir)
+        if os.environ.get("BB_TMPDIR_NOCLEAN") == "yes":
+            print("Not cleaning up %s. Please remove manually." % self.tempdir)
+        else:
+            bb.utils.prunedir(self.tempdir)
+
+class LayerObjectTest(LayersTest):
+    def setUp(self):
+        from layers.layerindex import Branch, LayerItem, LayerBranch, LayerDependency, Recipe, Machine, Distro
+
+        LayersTest.setUp(self)
+
+        self.index = {}
+
+        branchId = 0
+        layerItemId = 0
+        layerBranchId = 0
+        layerDependencyId = 0
+        recipeId = 0
+        machineId = 0
+        distroId = 0
+
+        self.index['branches'] = {}
+        self.index['layerItems'] = {}
+        self.index['layerBranches'] = {}
+        self.index['layerDependencies'] = {}
+        self.index['recipes'] = {}
+        self.index['machines'] = {}
+        self.index['distros'] = {}
+
+        branchId += 1
+        self.index['branches'][branchId] = Branch(self.index, None)
+        self.index['branches'][branchId].define_data(branchId,
+                                        'test_branch', 'bb_test_branch')
+
+        layerItemId +=1
+        self.index['layerItems'][layerItemId] = LayerItem(self.index, None)
+        self.index['layerItems'][layerItemId].define_data(layerItemId, 'test_layerItem',
+                                        vcs_url='git://git_test_url/test_layerItem')
+
+        layerBranchId +=1
+        self.index['layerBranches'][layerBranchId] = LayerBranch(self.index, None)
+        self.index['layerBranches'][layerBranchId].define_data(layerBranchId,
+                                        'test_collection', '99', layerItemId,
+                                        branchId)
+
+        recipeId += 1
+        self.index['recipes'][recipeId] = Recipe(self.index, None)
+        self.index['recipes'][recipeId].define_data(recipeId, 'test_git.bb',
+                                        'recipes-test', 'test', 'git',
+                                        layerBranchId)
+
+        machineId += 1
+        self.index['machines'][machineId] = Machine(self.index, None)
+        self.index['machines'][machineId].define_data(machineId,
+                                        'test_machine', 'test_machine',
+                                        layerBranchId)
+
+        distroId += 1
+        self.index['distros'][distroId] = Distro(self.index, None)
+        self.index['distros'][distroId].define_data(distroId,
+                                        'test_distro', 'test_distro',
+                                        layerBranchId)
+
+        layerItemId +=1
+        self.index['layerItems'][layerItemId] = LayerItem(self.index, None)
+        self.index['layerItems'][layerItemId].define_data(layerItemId, 'test_layerItem 2',
+                                        vcs_url='git://git_test_url/test_layerItem')
+
+        layerBranchId +=1
+        self.index['layerBranches'][layerBranchId] = LayerBranch(self.index, None)
+        self.index['layerBranches'][layerBranchId].define_data(layerBranchId,
+                                        'test_collection_2', '72', layerItemId,
+                                        branchId, actual_branch='some_other_branch')
+
+        layerDependencyId += 1
+        self.index['layerDependencies'][layerDependencyId] = LayerDependency(self.index, None)
+        self.index['layerDependencies'][layerDependencyId].define_data(layerDependencyId,
+                                        layerBranchId, 1)
+
+        layerDependencyId += 1
+        self.index['layerDependencies'][layerDependencyId] = LayerDependency(self.index, None)
+        self.index['layerDependencies'][layerDependencyId].define_data(layerDependencyId,
+                                        layerBranchId, 1, required=False)
+
+    def test_branch(self):
+        branch = self.index['branches'][1]
+        self.assertEqual(branch.get_id(), 1)
+        self.assertEqual(branch.get_name(), 'test_branch')
+        self.assertEqual(branch.get_short_description(), 'test_branch')
+        self.assertEqual(branch.get_bitbake_branch(), 'bb_test_branch')
+
+    def test_layerItem(self):
+        layerItem = self.index['layerItems'][1]
+        self.assertEqual(layerItem.get_id(), 1)
+        self.assertEqual(layerItem.get_name(), 'test_layerItem')
+        self.assertEqual(layerItem.get_summary(), 'test_layerItem')
+        self.assertEqual(layerItem.get_description(), 'test_layerItem')
+        self.assertEqual(layerItem.get_vcs_url(), 'git://git_test_url/test_layerItem')
+        self.assertEqual(layerItem.get_vcs_web_url(), None)
+        self.assertEqual(layerItem.get_vcs_web_tree_base_url(), None)
+        self.assertEqual(layerItem.get_vcs_web_file_base_url(), None)
+        self.assertTrue(layerItem.get_updated() != None)
+
+        layerItem = self.index['layerItems'][2]
+        self.assertEqual(layerItem.get_id(), 2)
+        self.assertEqual(layerItem.get_name(), 'test_layerItem 2')
+        self.assertEqual(layerItem.get_summary(), 'test_layerItem 2')
+        self.assertEqual(layerItem.get_description(), 'test_layerItem 2')
+        self.assertEqual(layerItem.get_vcs_url(), 'git://git_test_url/test_layerItem')
+        self.assertEqual(layerItem.get_vcs_web_url(), None)
+        self.assertEqual(layerItem.get_vcs_web_tree_base_url(), None)
+        self.assertEqual(layerItem.get_vcs_web_file_base_url(), None)
+        self.assertTrue(layerItem.get_updated() != None)
+
+    def test_layerBranch(self):
+        layerBranch = self.index['layerBranches'][1]
+        self.assertEqual(layerBranch.get_id(), 1)
+        self.assertEqual(layerBranch.get_collection(), 'test_collection')
+        self.assertEqual(layerBranch.get_version(), '99')
+        self.assertEqual(layerBranch.get_vcs_subdir(), '')
+        self.assertEqual(layerBranch.get_actual_branch(), 'test_branch')
+        self.assertTrue(layerBranch.get_updated() != None)
+        self.assertEqual(layerBranch.get_layer_id(), 1)
+        self.assertEqual(layerBranch.get_branch_id(), 1)
+        self.assertEqual(layerBranch.get_layer(), self.index['layerItems'][1])
+        self.assertEqual(layerBranch.get_branch(), self.index['branches'][1])
+
+        layerBranch = self.index['layerBranches'][2]
+        self.assertEqual(layerBranch.get_id(), 2)
+        self.assertEqual(layerBranch.get_collection(), 'test_collection_2')
+        self.assertEqual(layerBranch.get_version(), '72')
+        self.assertEqual(layerBranch.get_vcs_subdir(), '')
+        self.assertEqual(layerBranch.get_actual_branch(), 'some_other_branch')
+        self.assertTrue(layerBranch.get_updated() != None)
+        self.assertEqual(layerBranch.get_layer_id(), 2)
+        self.assertEqual(layerBranch.get_branch_id(), 1)
+        self.assertEqual(layerBranch.get_layer(), self.index['layerItems'][2])
+        self.assertEqual(layerBranch.get_branch(), self.index['branches'][1])
+
+    def test_layerDependency(self):
+        layerDependency = self.index['layerDependencies'][1]
+        self.assertEqual(layerDependency.get_id(), 1)
+        self.assertEqual(layerDependency.get_layerbranch_id(), 2)
+        self.assertEqual(layerDependency.get_layerbranch(), self.index['layerBranches'][2])
+        self.assertEqual(layerDependency.get_layer_id(), 2)
+        self.assertEqual(layerDependency.get_layer(), self.index['layerItems'][2])
+        self.assertTrue(layerDependency.is_required())
+        self.assertEqual(layerDependency.get_dependency_id(), 1)
+        self.assertEqual(layerDependency.get_dependency_layer(), self.index['layerItems'][1])
+        self.assertEqual(layerDependency.get_dependency_layerBranch(), self.index['layerBranches'][1])
+
+        # Previous check used the fall back method.. now use the faster method
+        # Create quick lookup layerBranches_layerId_branchId table
+        if 'layerBranches' in self.index:
+            # Create associated quick lookup indexes
+            self.index['layerBranches_layerId_branchId'] = {}
+            for layerBranchId in self.index['layerBranches']:
+                obj = self.index['layerBranches'][layerBranchId]
+                self.index['layerBranches_layerId_branchId']["%s:%s" % (obj.get_layer_id(), obj.get_branch_id())] = obj
+
+        layerDependency = self.index['layerDependencies'][2]
+        self.assertEqual(layerDependency.get_id(), 2)
+        self.assertEqual(layerDependency.get_layerbranch_id(), 2)
+        self.assertEqual(layerDependency.get_layerbranch(), self.index['layerBranches'][2])
+        self.assertEqual(layerDependency.get_layer_id(), 2)
+        self.assertEqual(layerDependency.get_layer(), self.index['layerItems'][2])
+        self.assertFalse(layerDependency.is_required())
+        self.assertEqual(layerDependency.get_dependency_id(), 1)
+        self.assertEqual(layerDependency.get_dependency_layer(), self.index['layerItems'][1])
+        self.assertEqual(layerDependency.get_dependency_layerBranch(), self.index['layerBranches'][1])
+
+    def test_recipe(self):
+        recipe = self.index['recipes'][1]
+        self.assertEqual(recipe.get_id(), 1)
+        self.assertEqual(recipe.get_layerbranch_id(), 1)
+        self.assertEqual(recipe.get_layerbranch(), self.index['layerBranches'][1])
+        self.assertEqual(recipe.get_layer_id(), 1)
+        self.assertEqual(recipe.get_layer(), self.index['layerItems'][1])
+        self.assertEqual(recipe.get_filename(), 'test_git.bb')
+        self.assertEqual(recipe.get_filepath(), 'recipes-test')
+        self.assertEqual(recipe.get_fullpath(), 'recipes-test/test_git.bb')
+        self.assertEqual(recipe.get_summary(), "")
+        self.assertEqual(recipe.get_description(), "")
+        self.assertEqual(recipe.get_section(), "")
+        self.assertEqual(recipe.get_pn(), 'test')
+        self.assertEqual(recipe.get_pv(), 'git')
+        self.assertEqual(recipe.get_license(), "")
+        self.assertEqual(recipe.get_homepage(), "")
+        self.assertEqual(recipe.get_bugtracker(), "")
+        self.assertEqual(recipe.get_provides(), "")
+        self.assertTrue(recipe.get_updated() != None)
+        self.assertEqual(recipe.get_inherits(), "")
+
+    def test_machine(self):
+        machine = self.index['machines'][1]
+        self.assertEqual(machine.get_id(), 1)
+        self.assertEqual(machine.get_layerbranch_id(), 1)
+        self.assertEqual(machine.get_layerbranch(), self.index['layerBranches'][1])
+        self.assertEqual(machine.get_layer_id(), 1)
+        self.assertEqual(machine.get_layer(), self.index['layerItems'][1])
+        self.assertEqual(machine.get_name(), 'test_machine')
+        self.assertEqual(machine.get_description(), 'test_machine')
+        self.assertTrue(machine.get_updated() != None)
+
+    def test_distro(self):
+        distro = self.index['distros'][1]
+        self.assertEqual(distro.get_id(), 1)
+        self.assertEqual(distro.get_layerbranch_id(), 1)
+        self.assertEqual(distro.get_layerbranch(), self.index['layerBranches'][1])
+        self.assertEqual(distro.get_layer_id(), 1)
+        self.assertEqual(distro.get_layer(), self.index['layerItems'][1])
+        self.assertEqual(distro.get_name(), 'test_distro')
+        self.assertEqual(distro.get_description(), 'test_distro')
+        self.assertTrue(distro.get_updated() != None)
+
+
+class LayerIndexWebRestApiTest(LayersTest):
+
+    if os.environ.get("BB_SKIP_NETTESTS") == "yes":
+        print("Unset BB_SKIP_NETTESTS to run network tests")
+    else:
+        def setUp(self):
+            LayersTest.setUp(self)
+            self.lindex = layerindex.LayerIndex(self.d)
+            self.lindex.load_layerindex('http://layers.openembedded.org/layerindex/api/;type=restapi;branch=morty', load='layerDependencies')
+
+        def test_layerindex_is_empty(self):
+            self.assertFalse(self.lindex.is_empty())
+
+        def test_layerindex_store_file(self):
+            self.lindex.store_layerindex('file://%s/file.json;type=restapi' % self.tempdir, self.lindex.lindex[0])
+
+            self.assertTrue(os.path.isfile('%s/file.json' % self.tempdir))
+
+            reload = layerindex.LayerIndex(self.d)
+            reload.load_layerindex('file://%s/file.json;type=restapi' % self.tempdir)
+
+            self.assertFalse(reload.is_empty())
+
+            # Calculate layerItems in original index that should NOT be in reload
+            layerItemNames = []
+            for itemId in self.lindex.lindex[0]['layerItems']:
+                layerItemNames.append(self.lindex.lindex[0]['layerItems'][itemId].get_name())
+
+            for layerBranchId in self.lindex.lindex[0]['layerBranches']:
+                layerItemNames.remove(self.lindex.lindex[0]['layerBranches'][layerBranchId].get_layer().get_name())
+
+            for itemId in reload.lindex[0]['layerItems']:
+                self.assertFalse(reload.lindex[0]['layerItems'][itemId].get_name() in layerItemNames)
+
+            # Compare the original to what we wrote...
+            for type in self.lindex.lindex[0]:
+                if type == 'apilinks' or \
+                   type == 'layerItems' or \
+                   type in self.lindex.lindex[0]['CONFIG']['local']:
+                    continue
+                for id in self.lindex.lindex[0][type]:
+                    self.logger.debug(1, "type %s" % (type))
+
+                    self.assertTrue(id in reload.lindex[0][type])
+
+                    self.logger.debug(1, "%s ? %s" % (self.lindex.lindex[0][type][id], reload.lindex[0][type][id]))
+
+                    self.assertEqual(self.lindex.lindex[0][type][id], reload.lindex[0][type][id])
+
+        def test_layerindex_store_split(self):
+            self.lindex.store_layerindex('file://%s;type=restapi' % self.tempdir, self.lindex.lindex[0])
+
+            reload = layerindex.LayerIndex(self.d)
+            reload.load_layerindex('file://%s;type=restapi' % self.tempdir)
+
+            self.assertFalse(reload.is_empty())
+
+            for type in self.lindex.lindex[0]:
+                if type == 'apilinks' or \
+                   type == 'layerItems' or \
+                   type in self.lindex.lindex[0]['CONFIG']['local']:
+                    continue
+                for id in self.lindex.lindex[0][type]:
+                    self.logger.debug(1, "type %s" % (type))
+
+                    self.assertTrue(id in reload.lindex[0][type])
+
+                    self.logger.debug(1, "%s ? %s" % (self.lindex.lindex[0][type][id], reload.lindex[0][type][id]))
+
+                    self.assertEqual(self.lindex.lindex[0][type][id], reload.lindex[0][type][id])
+
+        def test_dependency_resolution(self):
+            # Verify depth first searching...
+            (dependencies, invalidnames) = self.lindex.get_dependencies(names='meta-python')
+
+            first = True
+            for deplayerbranch in dependencies:
+                layerBranch = dependencies[deplayerbranch][0]
+                layerDeps = dependencies[deplayerbranch][1:]
+
+                if not first:
+                    continue
+
+                first = False
+
+                # Top of the deps should be openembedded-core, since everything depends on it.
+                self.assertEquals(layerBranch.get_layer().get_name(), "openembedded-core")
+
+                # meta-python should cause an openembedded-core dependency, if not assert!
+                for dep in layerDeps:
+                    if dep.get_layer().get_name() == 'meta-python':
+                        break
+                else:
+                    self.assetTrue(False)
+
+                # Only check the first element...
+                break
+            else:
+                if first:
+                    # Empty list, this is bad.
+                    self.assertTrue(False)
+
+                # Last dep should be the requested item
+                layerBranch = dependencies[deplayerbranch][0]
+                self.assertEquals(layerBranch.get_layer().get_name(), "meta-python")
+
+        def test_find_collection(self):
+            result = self.lindex.find_collection('core')
+
+            self.assertTrue(result != None)
+
+        def test_get_layerbranch(self):
+            result = self.lindex.get_layerbranch('openembedded-core')
+
+            self.assertTrue(result != None)
diff --git a/lib/layers/tests/manager.py b/lib/layers/tests/manager.py
new file mode 100644
index 000000000..c05014636
--- /dev/null
+++ b/lib/layers/tests/manager.py
@@ -0,0 +1,155 @@
+# Copyright (C) 2017 Wind River Systems, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+import unittest
+import tempfile
+import os
+import bb
+
+from layers import manager
+
+import logging
+
+class LayersTest(unittest.TestCase):
+
+    def setUp(self):
+        self.origdir = os.getcwd()
+        self.d = bb.data.init()
+        self.tempdir = tempfile.mkdtemp()
+        self.dldir = os.path.join(self.tempdir, "download")
+        os.mkdir(self.dldir)
+        self.d.setVar("DL_DIR", self.dldir)
+        self.unpackdir = os.path.join(self.tempdir, "unpacked")
+        self.d.setVar("BBLAYERS_FETCH_DIR", self.unpackdir)
+        os.mkdir(self.unpackdir)
+        persistdir = os.path.join(self.tempdir, "persistdata")
+        self.d.setVar("PERSISTENT_DIR", persistdir)
+        self.logger = logging.getLogger("BitBake")
+        self.d.setVar('BBLAYERS', '')
+
+    def tearDown(self):
+        os.chdir(self.origdir)
+        if os.environ.get("BB_TMPDIR_NOCLEAN") == "yes":
+            print("Not cleaning up %s. Please remove manually." % self.tempdir)
+        else:
+            bb.utils.prunedir(self.tempdir)
+
+class LayerManagerTest(LayersTest):
+    def setUp(self):
+        LayersTest.setUp(self)
+
+        self.manager = manager.LayerManager(self.d, None)
+
+    def test_get_bitbake_info(self):
+        (bb_remote, bb_branch, bb_rev, bb_path) = self.manager.get_bitbake_info()
+
+        self.assertTrue("://" in bb_remote)
+
+        us = os.path.dirname(__file__) # bitbake/lib/layers/tests
+        us = os.path.dirname(us)       # bitbake/lib/layers
+        us = os.path.dirname(us)       # bitbake/lib
+        us = os.path.dirname(us)       # bitbake
+
+        self.assertEqual(bb_path, us)
+
+    def test_load_bblayers(self):
+
+        self.d.setVar('LAYERSERIES_CORENAMES', 'under_test')
+
+        self.d.setVar('BBFILE_COLLECTIONS', 'test1')
+        self.d.appendVar('BBFILE_COLLECTIONS', ' test2')
+        self.d.appendVar('BBFILE_COLLECTIONS', ' test3')
+
+        self.d.setVar('BBLAYERS', '%s/test1_layer %s/test2_layer %s/test3_layer'
+                              % (self.tempdir, self.tempdir, self.tempdir))
+
+        self.d.setVar('BBLAYERS_LAYERINDEX_NAME_test1', 'oe-test-layer')
+
+        self.d.setVar('LAYERVERSION_test1', '1')
+        self.d.setVar('LAYERVERSION_test2', '2')
+        self.d.setVar('LAYERVERSION_test3', '3')
+
+        index = self.manager.load_bblayers()
+
+        self.assertEqual(index['branches'][1].get_name(), 'under_test')
+
+        layerBranch = index['layerBranches'][1]
+        self.assertEqual(layerBranch.get_collection(), 'test1')
+        self.assertEqual(layerBranch.get_version(), '1')
+        self.assertEqual(layerBranch.get_layer().get_name(), 'oe-test-layer')
+
+        layerBranch = index['layerBranches'][2]
+        self.assertEqual(layerBranch.get_collection(), 'test2')
+        self.assertEqual(layerBranch.get_version(), '2')
+        self.assertEqual(layerBranch.get_layer().get_name(), 'test2')
+
+        layerBranch = index['layerBranches'][3]
+        self.assertEqual(layerBranch.get_collection(), 'test3')
+        self.assertEqual(layerBranch.get_version(), '3')
+        self.assertEqual(layerBranch.get_layer().get_name(), 'test3')
+
+    def test_clone_directory(self):
+        self.assertEqual(self.manager.get_clone_directory('git://foo/foobar'),
+                         os.path.join(self.unpackdir, 'foobar'))
+
+    if os.environ.get("BB_SKIP_NETTESTS") == "yes":
+        print("Unset BB_SKIP_NETTESTS to run network tests")
+    else:
+        def test_fetcher(self):
+            from collections import OrderedDict
+
+            from layers.layerindex import Branch, LayerItem, LayerBranch
+
+            branchId = 0
+            layerItemId = 0
+            layerBranchId = 0
+
+            index = {}
+            index['branches'] = {}
+            index['layerItems'] = {}
+            index['layerBranches'] = {}
+
+            branchId += 1
+            index['branches'][branchId] = Branch(index, None)
+            index['branches'][branchId].define_data(branchId,
+                                        'master', 'master')
+
+            layerItemId +=1
+            index['layerItems'][layerItemId] = LayerItem(index, None)
+            index['layerItems'][layerItemId].define_data(layerItemId, 'meta-gplv2',
+                                        vcs_url='git://git.yoctoproject.org/meta-gplv2')
+
+            layerBranchId +=1
+            index['layerBranches'][layerBranchId] = LayerBranch(index, None)
+            index['layerBranches'][layerBranchId].define_data(layerBranchId,
+                                        'gplv2', '1', layerItemId, branchId)
+
+
+            dependencies = OrderedDict()
+            layerBranch = index['layerBranches'][layerBranchId]
+            dependencies[layerBranch.get_layer().get_name()] = [layerBranch]
+
+            self.d.setVar('BBLAYERS_FETCHER_TYPE', 'fetcher')
+            self.manager.setup(dependencies)
+            self.manager.fetch()
+            self.manager.unpack()
+
+            fetchplugin = self.manager.get_plugin(self.manager.index_fetcher)
+            newlayers = fetchplugin.get_new_layers()
+
+            self.assertFalse(not newlayers)
+
+            self.assertTrue(os.path.isdir(newlayers[0]))
+            self.assertTrue(os.path.isfile(os.path.join(newlayers[0],'conf/layer.conf')))