[OE-core] [PATCH 1/3] oeqa: don't litter /tmp with temporary directories

[Ross Burton]

If we need to create a temporary directory in targetbuild or buildproject use
tempfile.TemporaryDirectory so that when the test case is finished, the
directory is deleted.

Also synchronise the logic and don't possibly store the temporary directory in
self.tmpdir as nothing uses that.

Signed-off-by: Ross Burton <ross.burton at intel.com>
---
 meta/lib/oeqa/utils/buildproject.py | 5 ++++-
 meta/lib/oeqa/utils/targetbuild.py  | 5 +++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/meta/lib/oeqa/utils/buildproject.py b/meta/lib/oeqa/utils/buildproject.py
index 7e9b84955f5..524015ede4b 100644
--- a/meta/lib/oeqa/utils/buildproject.py
+++ b/meta/lib/oeqa/utils/buildproject.py
@@ -17,7 +17,10 @@ class BuildProject(metaclass=ABCMeta):
         self.uri = uri
         self.archive = os.path.basename(uri)
         if not tmpdir:
-            tmpdir = tempfile.mkdtemp(prefix='buildproject')
+            tmpdir = self.d.getVar('WORKDIR')
+            if not tmpdir:
+                self.tempdirobj = tempfile.TemporaryDirectory(prefix='buildproject-')
+                tmpdir = self.tempdirobj.name
         self.localarchive = os.path.join(tmpdir, self.archive)
         self.dl_dir = dl_dir
         if foldername:
diff --git a/meta/lib/oeqa/utils/targetbuild.py b/meta/lib/oeqa/utils/targetbuild.py
index 1202d579fb0..b8db7b2aca0 100644
--- a/meta/lib/oeqa/utils/targetbuild.py
+++ b/meta/lib/oeqa/utils/targetbuild.py
@@ -20,8 +20,9 @@ class BuildProject(metaclass=ABCMeta):
         if not tmpdir:
             tmpdir = self.d.getVar('WORKDIR')
             if not tmpdir:
-                tmpdir = tempfile.mkdtemp(prefix='buildproject')
-        self.localarchive = os.path.join(tmpdir,self.archive)
+                self.tempdirobj = tempfile.TemporaryDirectory(prefix='buildproject-')
+                tmpdir = self.tempdirobj.name
+        self.localarchive = os.path.join(tmpdir, self.archive)
         if foldername:
             self.fname = foldername
         else:
-- 
2.11.0