Don't report an error when parsing an empty annotations fileHEADupstream/master

Fixes: #64

2 files changed, 10 insertions, 0 deletions

diff --git a/tests/in/empty_tuner_annotations.yaml b/tests/in/empty_tuner_annotations.yaml
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/in/empty_tuner_annotations.yaml
diff --git a/tests/test_tags.py b/tests/test_tags.py
index 0e70143..be9483c 100644
--- a/tests/test_tags.py
+++ b/tests/test_tags.py
@@ -69,6 +69,16 @@ def test_merge_annotation():
     assert interface.attribute('extra', 'extraA') is True
 
 @patch('sys.stderr', new_callable=StringIO)
+def test_merge_empty_annotation(mock_stderr):
+    system = loadTuner()
+    interface = system.lookup('com.pelagicore.ivi.tuner.Tuner')
+    assert interface
+    FileSystem.merge_annotations(system, inputPath / 'empty_tuner_annotations.yaml')
+
+    assert interface.attribute('extra', 'extraA') is None
+    assert not mock_stderr.getvalue().__contains__("Error parsing annotation")
+
+@patch('sys.stderr', new_callable=StringIO)
 def test_merge_broken_annotation(mock_stderr):
     system = loadTuner()
     interface = system.lookup('com.pelagicore.ivi.tuner.Tuner')