test: move temporary store to osbuildtest.TestCase

All tests will need a store. There's no need for each to create a
temporary directory.

test/osbuildtest.py

@@ -1,14 +1,22 @@
 
 import json
 import os
+import shutil
 import subprocess
 import sys
+import tempfile
 import unittest
 
 
 class TestCase(unittest.TestCase):
-    def run_osbuild(self, pipeline, store):
-            osbuild_cmd = ["python3", "-m", "osbuild", "--json", "--store", store, "--libdir", ".", pipeline]
+    def setUp(self):
+        self.store = tempfile.mkdtemp(dir="/var/tmp")
+
+    def tearDown(self):
+        shutil.rmtree(self.store)
+
+    def run_osbuild(self, pipeline):
+            osbuild_cmd = ["python3", "-m", "osbuild", "--json", "--store", self.store, "--libdir", ".", pipeline]
 
             build_pipeline = os.getenv("OSBUILD_TEST_BUILD_PIPELINE", None)
             if build_pipeline:

test/test_boot.py

@@ -1,31 +1,29 @@
 
 import subprocess
-import tempfile
 import unittest
 from . import osbuildtest
 
 
 class TestBoot(osbuildtest.TestCase):
     def test_boot(self):
-        with tempfile.TemporaryDirectory(dir="/var/tmp") as store:
-            _, output_id = self.run_osbuild("test/pipelines/f30-boot.json", store=store)
+        _, output_id = self.run_osbuild("test/pipelines/f30-boot.json")
 
-            r = subprocess.run(["qemu-system-x86_64",
-                "-snapshot",
-                "-m", "1024",
-                "-accel", "kvm:hvf:tcg",
+        r = subprocess.run(["qemu-system-x86_64",
+            "-snapshot",
+            "-m", "1024",
+            "-accel", "kvm:hvf:tcg",
 
-                # be silent
-                "-nographic",
-                "-monitor", "none",
-                "-serial", "none",
+            # be silent
+            "-nographic",
+            "-monitor", "none",
+            "-serial", "none",
 
-                # create /dev/vport0p1
-                "-chardev", "stdio,id=stdio",
-                "-device", "virtio-serial",
-                "-device", "virtserialport,chardev=stdio",
+            # create /dev/vport0p1
+            "-chardev", "stdio,id=stdio",
+            "-device", "virtio-serial",
+            "-device", "virtserialport,chardev=stdio",
 
-                f"{store}/refs/{output_id}/f30-boot.qcow2"
-            ], encoding="utf-8", capture_output=True, check=True)
+            f"{self.store}/refs/{output_id}/f30-boot.qcow2"
+        ], encoding="utf-8", capture_output=True, check=True)
 
-            self.assertEqual(r.stdout.strip(), "running")
+        self.assertEqual(r.stdout.strip(), "running")