If oe-selftest is run without -j, the separate build directory "build-st"
isn't cleaned up afterwards. Mirror the behaviour of the -j option to
handle this the same way, only preserve upon failure.

To do this, the remove function needs to be moved to the selftest
context module so that it can be accessed without requiring the
testtools and subunit modules the -j option requires.

A dummy wrapper class is used to wrap the tests and clean up afterwards.

[YOCTO #13953]

Signed-off-by: Richard Purdie <[email protected]>
---
 meta/lib/oeqa/core/utils/concurrencytest.py | 23 +++----------
 meta/lib/oeqa/selftest/context.py           | 36 +++++++++++++++++++--
 2 files changed, 37 insertions(+), 22 deletions(-)

diff --git a/meta/lib/oeqa/core/utils/concurrencytest.py 
b/meta/lib/oeqa/core/utils/concurrencytest.py
index 01c39830f92..b2eb68fb024 100644
--- a/meta/lib/oeqa/core/utils/concurrencytest.py
+++ b/meta/lib/oeqa/core/utils/concurrencytest.py
@@ -183,10 +183,11 @@ class dummybuf(object):
 #
 class ConcurrentTestSuite(unittest.TestSuite):
 
-    def __init__(self, suite, processes, setupfunc):
+    def __init__(self, suite, processes, setupfunc, removefunc):
         super(ConcurrentTestSuite, self).__init__([suite])
         self.processes = processes
         self.setupfunc = setupfunc
+        self.removefunc = removefunc
 
     def run(self, result):
         tests, totaltests = fork_for_tests(self.processes, self)
@@ -237,22 +238,6 @@ class ConcurrentTestSuite(unittest.TestSuite):
         finally:
             queue.put(test)
 
-def removebuilddir(d):
-    delay = 5
-    while delay and os.path.exists(d + "/bitbake.lock"):
-        time.sleep(1)
-        delay = delay - 1
-    # Deleting these directories takes a lot of time, use autobuilder
-    # clobberdir if its available
-    clobberdir = 
os.path.expanduser("~/yocto-autobuilder-helper/janitor/clobberdir")
-    if os.path.exists(clobberdir):
-        try:
-            subprocess.check_call([clobberdir, d])
-            return
-        except subprocess.CalledProcessError:
-            pass
-    bb.utils.prunedir(d, ionice=True)
-
 def fork_for_tests(concurrency_num, suite):
     result = []
     if 'BUILDDIR' in os.environ:
@@ -297,7 +282,7 @@ def fork_for_tests(concurrency_num, suite):
                 if ourpid != os.getpid():
                     os._exit(0)
                 if newbuilddir and unittest_result.wasSuccessful():
-                    removebuilddir(newbuilddir)
+                    suite.removefunc(newbuilddir)
             except:
                 # Don't do anything with process children
                 if ourpid != os.getpid():
@@ -313,7 +298,7 @@ def fork_for_tests(concurrency_num, suite):
                     sys.stderr.write(traceback.format_exc())
                 finally:
                     if newbuilddir:
-                        removebuilddir(newbuilddir)
+                        suite.removefunc(newbuilddir)
                     stream.flush()
                     os._exit(1)
             stream.flush()
diff --git a/meta/lib/oeqa/selftest/context.py 
b/meta/lib/oeqa/selftest/context.py
index 494e9dbd1ec..23f7d71bdbc 100644
--- a/meta/lib/oeqa/selftest/context.py
+++ b/meta/lib/oeqa/selftest/context.py
@@ -22,6 +22,37 @@ from oeqa.core.exception import OEQAPreRun, OEQATestNotFound
 
 from oeqa.utils.commands import runCmd, get_bb_vars, get_test_layer
 
+class NonConcurrentTestSuite(unittest.TestSuite):
+    def __init__(self, suite, processes, setupfunc, removefunc):
+        super().__init__([suite])
+        self.processes = processes
+        self.suite = suite
+        self.setupfunc = setupfunc
+        self.removefunc = removefunc
+
+    def run(self, result):
+        (builddir, newbuilddir) = self.setupfunc("-st", None, self.suite)
+        ret = super().run(result)
+        os.chdir(builddir)
+        if newbuilddir and ret.wasSuccessful():
+            self.removefunc(newbuilddir)
+
+def removebuilddir(d):
+    delay = 5
+    while delay and os.path.exists(d + "/bitbake.lock"):
+        time.sleep(1)
+        delay = delay - 1
+    # Deleting these directories takes a lot of time, use autobuilder
+    # clobberdir if its available
+    clobberdir = 
os.path.expanduser("~/yocto-autobuilder-helper/janitor/clobberdir")
+    if os.path.exists(clobberdir):
+        try:
+            subprocess.check_call([clobberdir, d])
+            return
+        except subprocess.CalledProcessError:
+            pass
+    bb.utils.prunedir(d, ionice=True)
+
 class OESelftestTestContext(OETestContext):
     def __init__(self, td=None, logger=None, machines=None, config_paths=None, 
newbuilddir=None):
         super(OESelftestTestContext, self).__init__(td, logger)
@@ -86,10 +117,9 @@ class OESelftestTestContext(OETestContext):
         if processes:
             from oeqa.core.utils.concurrencytest import ConcurrentTestSuite
 
-            return ConcurrentTestSuite(suites, processes, self.setup_builddir)
+            return ConcurrentTestSuite(suites, processes, self.setup_builddir, 
removebuilddir)
         else:
-            self.setup_builddir("-st", None, suites)
-            return suites
+            return NonConcurrentTestSuite(suites, processes, 
self.setup_builddir, removebuilddir)
 
     def runTests(self, processes=None, machine=None, skips=[]):
         if machine:
-- 
2.25.1

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