Use temporalio.testing.ActivityEnvironment (#96)

tests/hello/hello_activity_choice_test.py

@@ -0,0 +1,32 @@
+import pytest
+from temporalio.testing import ActivityEnvironment
+
+from hello.hello_activity_choice import (
+    order_apples,
+    order_bananas,
+    order_cherries,
+    order_oranges,
+)
+
+# A list of tuples where each tuple contains:
+# - The activity function
+# - The order amount
+# - The expected result string
+activity_test_data = [
+    (order_apples, 5, "Ordered 5 Apples..."),
+    (order_bananas, 5, "Ordered 5 Bananas..."),
+    (order_cherries, 5, "Ordered 5 Cherries..."),
+    (order_oranges, 5, "Ordered 5 Oranges..."),
+]
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize(
+    "activity_func, order_amount, expected_result", activity_test_data
+)
+async def test_order_fruit(activity_func, order_amount, expected_result):
+    activity_environment = ActivityEnvironment()
+
+    result = await activity_environment.run(activity_func, order_amount)
+
+    assert result == expected_result