test multiple outputs in convert with kwargs not warning

Author: grnnja

tests/tasks/test_notebook.py

@@ -488,6 +488,38 @@ def test_can_execute_when_product_is_metaproduct(tmp_directory):
     dag.build()
 
 
+# should not have warning when have multiple exports and
+# nbconvert_export_kwargs set
+@pytest.mark.parametrize('product, nb_product_key, nbconvert_exporter_name', [
+    ({
+        'nb': File(Path('out.pdf')),
+        'file': File(Path('another', 'data', 'file.txt')),
+    }, 'nb', 'webpdf')
+])
+def test_multiple_nb_no_kwargs_warning(product, nb_product_key,
+                                       nbconvert_exporter_name):
+    dag = DAG()
+
+    code = """
+# + tags=["parameters"]
+var = None
+
+# +
+from pathlib import Path
+Path(product['file']).touch()
+    """
+
+    NotebookRunner(code,
+                   product=product,
+                   dag=dag,
+                   ext_in='py',
+                   nbconvert_exporter_name=nbconvert_exporter_name,
+                   nb_product_key=nb_product_key,
+                   nbconvert_export_kwargs=dict(exclude_input=True),
+                   name='nb')
+    dag.build()
+
+
 @pytest.mark.parametrize('product, nb_product_key, nbconvert_exporter_name', [
     (
         {