support/testing: add test for python-avro

This adds a test case for python-avro, with a script that
performs a simple deserialization.

Signed-off-by: Titouan Christophe <titouan.christophe@railnova.eu>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

support/testing/tests/package/sample_python_avro.py

@@ -0,0 +1,23 @@
+from io import BytesIO
+from avro.schema import Parse
+from avro.io import DatumReader, BinaryDecoder
+
+schema = Parse("""{
+"namespace": "org.buildroot.package.python_avro",
+"type": "record",
+"name": "Developer",
+"fields": [
+    {"name": "email", "type": "string"},
+    {"name": "maintainer_of", "type": "string"}
+]
+}""")
+
+example = b'<titouan.christophe@railnova.eu\x16python_avro'
+
+reader = DatumReader(schema)
+deserialized = reader.read(BinaryDecoder(BytesIO(example)))
+
+assert deserialized == {
+    'email': 'titouan.christophe@railnova.eu',
+    'maintainer_of': 'python_avro',
+}