oeqa/oelib/path: don't leak temporary directories

setUp() is used to populate a directory of temporary files, and deleted in
__del__.  However setUp() is called once *per test* so __del__ would only be
able to remove the last directory created.

Fix the code by using the natural counterpart to setUp, tearDown(), to clean up.

(From OE-Core rev: 68b4723e6fb11d171869185bccf28f32f6284c18)

(From OE-Core rev: eee30d799ff892443d21de4128e7d643215b0ac1)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/cases/oelib/path.py

@@ -38,13 +38,6 @@ class TestRealPath(TestCase):
         ( "b/test", errno.ENOENT ),
     ]
 
-    def __del__(self):
-        try:
-            #os.system("tree -F %s" % self.tmpdir)
-            shutil.rmtree(self.tmpdir)
-        except:
-            pass
-
     def setUp(self):
         self.tmpdir = tempfile.mkdtemp(prefix = "oe-test_path")
         self.root = os.path.join(self.tmpdir, "R")
@@ -59,6 +52,9 @@ class TestRealPath(TestCase):
         for l in self.LINKS:
             os.symlink(l[1], os.path.join(self.root, l[0]))
 
+    def tearDown(self):
+        shutil.rmtree(self.tmpdir)
+
     def __realpath(self, file, use_physdir, assume_dir = True):
         return oe.path.realpath(os.path.join(self.root, file), self.root,
                                 use_physdir, assume_dir = assume_dir)