--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/cwltool/tests/echo-position-expr.cwl	Thu May 14 14:56:58 2020 -0400
@@ -0,0 +1,28 @@
+#!/usr/bin/env cwl-runner
+
+class: CommandLineTool
+cwlVersion: v1.0
+requirements:
+  InlineJavascriptRequirement: {}
+inputs:
+  one:
+    type: int
+    inputBinding:
+      position: $(self)
+  two:
+    type: int
+    inputBinding:
+      valueFrom: sensation!
+      position: ${return self+1;}
+arguments:
+  - position: ${return 2;}
+    valueFrom: singular
+outputs:
+  out:
+    type: string
+    outputBinding:
+      glob: out.txt
+      loadContents: true
+      outputEval: $(self[0].contents)
+baseCommand: echo
+stdout: out.txt