Fix test case

tests/examples/ex11.cwl

@@ -1 +1,41 @@
 #!/usr/bin/env cwl-runner
+$graph:
+  - class: ExpressionTool
+    expression: |-
+      ${return {'out': (function(){
+        return inputs.v + 1;
+      })()};}
+    id: '#addone'
+    inputs:
+      - id: v
+        type: int
+    outputs:
+      - id: out
+        type: int
+    requirements:
+      InlineJavascriptRequirement: {}
+  - class: Workflow
+    id: '#main'
+    inputs:
+      - id: val
+        type: int
+    outputs:
+      - id: q
+        outputSource: addone_1/out
+        type: int
+    requirements:
+      InlineJavascriptRequirement: {}
+      MultipleInputFeatureRequirement: {}
+      ScatterFeatureRequirement: {}
+      StepInputExpressionRequirement: {}
+      SubworkflowFeatureRequirement: {}
+    steps:
+      - id: addone_1
+        in:
+          v:
+            source: val
+        out:
+          - out
+        run: '#addone'
+cwlVersion: v1.0
+