Squashed 'yocto-poky/' content from commit ea562de

git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/meta/lib/oeqa/selftest/sstate.py b/meta/lib/oeqa/selftest/sstate.py
new file mode 100644
index 0000000..5989724
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+++ b/meta/lib/oeqa/selftest/sstate.py
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+import datetime
+import unittest
+import os
+import re
+import shutil
+
+import oeqa.utils.ftools as ftools
+from oeqa.selftest.base import oeSelfTest
+from oeqa.utils.commands import runCmd, bitbake, get_bb_var, get_test_layer
+
+
+class SStateBase(oeSelfTest):
+
+    def setUpLocal(self):
+        self.temp_sstate_location = None
+        self.sstate_path = get_bb_var('SSTATE_DIR')
+        self.distro = get_bb_var('NATIVELSBSTRING')
+        self.distro_specific_sstate = os.path.join(self.sstate_path, self.distro)
+
+    # Creates a special sstate configuration with the option to add sstate mirrors
+    def config_sstate(self, temp_sstate_location=False, add_local_mirrors=[]):
+        self.temp_sstate_location = temp_sstate_location
+
+        if self.temp_sstate_location:
+            temp_sstate_path = os.path.join(self.builddir, "temp_sstate_%s" % datetime.datetime.now().strftime('%Y%m%d%H%M%S'))
+            config_temp_sstate = "SSTATE_DIR = \"%s\"" % temp_sstate_path
+            self.append_config(config_temp_sstate)
+            self.track_for_cleanup(temp_sstate_path)
+        self.sstate_path = get_bb_var('SSTATE_DIR')
+        self.distro = get_bb_var('NATIVELSBSTRING')
+        self.distro_specific_sstate = os.path.join(self.sstate_path, self.distro)
+
+        if add_local_mirrors:
+            config_set_sstate_if_not_set = 'SSTATE_MIRRORS ?= ""'
+            self.append_config(config_set_sstate_if_not_set)
+            for local_mirror in add_local_mirrors:
+                self.assertFalse(os.path.join(local_mirror) == os.path.join(self.sstate_path), msg='Cannot add the current sstate path as a sstate mirror')
+                config_sstate_mirror = "SSTATE_MIRRORS += \"file://.* file:///%s/PATH\"" % local_mirror
+                self.append_config(config_sstate_mirror)
+
+    # Returns a list containing sstate files
+    def search_sstate(self, filename_regex, distro_specific=True, distro_nonspecific=True):
+        result = []
+        for root, dirs, files in os.walk(self.sstate_path):
+            if distro_specific and re.search("%s/[a-z0-9]{2}$" % self.distro, root):
+                for f in files:
+                    if re.search(filename_regex, f):
+                        result.append(f)
+            if distro_nonspecific and re.search("%s/[a-z0-9]{2}$" % self.sstate_path, root):
+                for f in files:
+                    if re.search(filename_regex, f):
+                        result.append(f)
+        return result