If downloading of assets has been disabled, then skip running a
test if the assets it has registered are not already downloaded.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 tests/functional/qemu_test/asset.py    |  8 +++++++-
 tests/functional/qemu_test/testcase.py | 11 +++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/tests/functional/qemu_test/asset.py b/tests/functional/qemu_test/asset.py
index c5d3e73c4b..39832b2587 100644
--- a/tests/functional/qemu_test/asset.py
+++ b/tests/functional/qemu_test/asset.py
@@ -65,6 +65,12 @@ def _check(self, cache_file):
     def valid(self):
         return self.cache_file.exists() and self._check(self.cache_file)
 
+    def fetchable(self):
+        return not os.environ.get("QEMU_TEST_NO_DOWNLOAD", False)
+
+    def available(self):
+        return self.valid() or self.fetchable()
+
     def _wait_for_other_download(self, tmp_cache_file):
         # Another thread already seems to download the asset, so wait until
         # it is done, while also checking the size to see whether it is stuck
@@ -103,7 +109,7 @@ def fetch(self):
                            self.cache_file, self.url)
             return str(self.cache_file)
 
-        if os.environ.get("QEMU_TEST_NO_DOWNLOAD", False):
+        if not self.fetchable():
             raise Exception("Asset cache is invalid and downloads disabled")
 
         self.log.info("Downloading %s to %s...", self.url, self.cache_file)
diff --git a/tests/functional/qemu_test/testcase.py b/tests/functional/qemu_test/testcase.py
index aa6c9c0d64..869f3949fe 100644
--- a/tests/functional/qemu_test/testcase.py
+++ b/tests/functional/qemu_test/testcase.py
@@ -184,6 +184,14 @@ def scratch_file(self, *args):
     def log_file(self, *args):
         return str(Path(self.outputdir, *args))
 
+    def assets_available(self):
+        for name, asset in vars(self.__class__).items():
+            if name.startswith("ASSET_") and type(asset) == Asset:
+                if not asset.available():
+                    self.log.debug(f"Asset {asset.url} not available")
+                    return False
+        return True
+
     def setUp(self, bin_prefix):
         self.assertIsNotNone(self.qemu_bin, 'QEMU_TEST_QEMU_BINARY must be set')
         self.arch = self.qemu_bin.split('-')[-1]
@@ -209,6 +217,9 @@ def setUp(self, bin_prefix):
         self.machinelog.setLevel(logging.DEBUG)
         self.machinelog.addHandler(self._log_fh)
 
+        if not self.assets_available():
+            self.skipTest('One or more assets is not available')
+
     def tearDown(self):
         if "QEMU_TEST_KEEP_SCRATCH" not in os.environ:
             shutil.rmtree(self.workdir)
-- 
2.46.0