Add test for sync version

Author: jakubno

python/tests/async/test_async_callbacks.py

@@ -8,7 +8,7 @@ async def async_append(item):
     return async_append
 
 
-async def test_resuls(async_sandbox: AsyncSandbox):
+async def test_results(async_sandbox: AsyncSandbox):
     results = []
 
     execution = await async_sandbox.run_code(
@@ -18,6 +18,16 @@ async def test_resuls(async_sandbox: AsyncSandbox):
     assert execution.results[0].text == "1"
 
 
+async def test_results_sync_callback(async_sandbox: AsyncSandbox):
+    results = []
+
+    execution = await async_sandbox.run_code(
+        "x = 1;x", on_result=lambda result: results.append(result)
+    )
+    assert len(results) == 1
+    assert execution.results[0].text == "1"
+
+
 async def test_error(async_sandbox: AsyncSandbox):
     errors = []
     execution = await async_sandbox.run_code("xyz", on_error=async_append_fn(errors))