Update InlineJavascriptRequirement to not require expressionLib

Author: dleehr

cwlgen/__init__.py

@@ -338,7 +338,10 @@ def __init__(self, expression_lib=None):
         self.expressionLib = expression_lib
 
     def _to_dict(self):
-        return {'expressionLib': [self.expressionLib]}
+        if self.expressionLib:
+            return {'expressionLib': [self.expressionLib]}
+        else:
+            return {}
 
 
 class DockerRequirement(Requirement):

test/test_unit_workflow.py

@@ -88,7 +88,7 @@ def test_generates_workflow_int_inputs(self):
 
     def test_add_requirements(self):
         w = cwlgen.Workflow()
-        req = cwlgen.InlineJavascriptReq(expression_lib='test_lib')
+        req = cwlgen.InlineJavascriptReq()
         w.requirements.append(req)
         generated = self.capture_tempfile(w.export)
         expected = b"""#!/usr/bin/env cwl-runner
@@ -98,8 +98,7 @@ def test_add_requirements(self):
 inputs: {}
 outputs: {}
 requirements:
-  InlineJavascriptRequirement:
-    expressionLib: [test_lib]
+  InlineJavascriptRequirement: {}
 """
         self.assertEqual(expected, generated)