support/testing: add pytest-asyncio test

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/testing/tests/package/sample_python_pytest_asyncio.py

@@ -0,0 +1,31 @@
+import asyncio
+import pytest
+
+
+x = 1
+
+
+@pytest.fixture()
+def f1():
+    global x
+    x = 2
+    yield 15
+    x = 3
+
+
+@pytest.mark.asyncio
+async def test_1():
+    assert x == 1
+
+
+@pytest.mark.asyncio
+async def test_2(f1):
+    assert x == 2
+    assert f1 == 15
+
+
+@pytest.mark.asyncio
+async def test_3():
+    assert x == 3
+    await asyncio.sleep(0.1)
+    assert x == 3