--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/cwltool/tests/wf/echo.cwl	Sat May 02 07:14:21 2020 -0400
@@ -0,0 +1,25 @@
+#!/usr/bin/env cwl-runner
+class: CommandLineTool
+cwlVersion: v1.0
+inputs:
+  r: string
+  script:
+    type: string
+    default: |
+      from __future__ import print_function
+      import sys
+      print(sys.argv[1])
+      if sys.argv[1] == "2":
+        exit(1)
+      else:
+        f = open("foo"+sys.argv[1]+".txt", "wb")
+        content = sys.argv[1]+"\n"
+        f.write(content.encode('utf-8'))
+      if sys.argv[1] == "5":
+        exit(1)
+outputs:
+  out:
+    type: File
+    outputBinding:
+      glob: foo$(inputs.r).txt
+arguments: [python, -c, $(inputs.script), $(inputs.r)]