Add selenium test for running workflow with optional select dataset

lib/galaxy_test/base/workflow_fixtures.py

@@ -57,6 +57,16 @@ steps:
 """
 
 
+WORKFLOW_SELECT_FROM_OPTIONAL_DATASET = """
+class: GalaxyWorkflow
+steps:
+  select_from_dataset_optional:
+    tool_id: select_from_dataset_optional
+    state:
+      select_single: null
+"""
+
+
 # Throwing a bunch of broken steps in to get a really long modal and sure it
 # is scrollable.
 WORKFLOW_WITH_INVALID_STATE = """

lib/galaxy_test/selenium/test_workflow_editor.py

@@ -6,6 +6,7 @@ from selenium.webdriver.common.keys import Keys
 from galaxy_test.base.workflow_fixtures import (
     WORKFLOW_NESTED_SIMPLE,
     WORKFLOW_OPTIONAL_TRUE_INPUT_COLLECTION,
+    WORKFLOW_SELECT_FROM_OPTIONAL_DATASET,
     WORKFLOW_SIMPLE_CAT_TWICE,
     WORKFLOW_SIMPLE_MAPPING,
     WORKFLOW_WITH_INVALID_STATE,
@@ -92,14 +93,7 @@ class WorkflowEditorTestCase(SeleniumTestCase):
     @selenium_test
     def test_optional_select_data_field(self):
         editor = self.components.workflow_editor
-        workflow_id = self.workflow_populator.upload_yaml_workflow("""
-class: GalaxyWorkflow
-steps:
-  select_from_dataset_optional:
-    tool_id: select_from_dataset_optional
-    state:
-      select_single: null
-      """)
+        workflow_id = self.workflow_populator.upload_yaml_workflow(WORKFLOW_SELECT_FROM_OPTIONAL_DATASET)
         self.workflow_index_open()
         self.workflow_index_click_option("Edit")
         editor = self.components.workflow_editor

lib/galaxy_test/selenium/test_workflow_run.py

@@ -8,6 +8,7 @@ from galaxy_test.base.workflow_fixtures import (
     WORKFLOW_NESTED_SIMPLE,
     WORKFLOW_RENAME_ON_REPLACEMENT_PARAM,
     WORKFLOW_RUNTIME_PARAMETER_SIMPLE,
+    WORKFLOW_SELECT_FROM_OPTIONAL_DATASET,
     WORKFLOW_SIMPLE_CAT_TWICE,
     WORKFLOW_WITH_CUSTOM_REPORT_1,
     WORKFLOW_WITH_CUSTOM_REPORT_1_TEST_DATA,
@@ -199,6 +200,14 @@ steps:
         self.wait_for_selector_visible(".embedded-dataset")
         self.screenshot("workflow_report_custom_1")
 
+    @selenium_test
+    @managed_history
+    def test_execution_with_null_optional_select_from_data(self):
+        self.open_in_workflow_run(WORKFLOW_SELECT_FROM_OPTIONAL_DATASET)
+        self.workflow_run_submit()
+        history_id = self.current_history_id()
+        self.workflow_populator.wait_for_history_workflows(history_id, expected_invocation_count=1)
+
     def open_in_workflow_run(self, yaml_content):
         name = self.workflow_upload_yaml_with_random_name(yaml_content)
         self.workflow_run_with_name(name)