Merge pull request #49 from common-workflow-language/inputBinding.position_expr

add changelog & test for expression in inputBinding.position

Author: mr-c

CommandLineTool.yml

@@ -100,6 +100,8 @@ $graph:
         * [Added](#LoadListingRequirement) `LoadListingRequirement`
           and [loadListing](#LoadContents) to control whether and how
           `Directory` listings should be loaded for use in expressions.
+        * The position field of the [CommandLineBinding](#CommandLineBinding) can
+          now be calculated from a CWL Expression.
 
       See also the [CWL Workflow Description, v1.1.0-dev1 changelog](Workflow.html#Changelog).
 

conformance_tests.yaml

@@ -3184,3 +3184,11 @@
     subdirectory objects when input parameter loadListing is
     'deep_listing'
   tags: [ command_line_tool ]
+
+- job: tests/echo-position-expr-job.yml
+  tool: tests/echo-position-expr.cwl
+  label: inputBinding_position_expr
+  output:
+    out: "🕺 1 singular sensation!\n"
+  doc: TBD
+  tags: [ command_line_tool, required ]

tests/echo-position-expr-job.yml

@@ -0,0 +1,2 @@
+one: 1
+two: 2

tests/echo-position-expr.cwl

@@ -0,0 +1,30 @@
+#!/usr/bin/env cwl-runner
+
+class: CommandLineTool
+cwlVersion: v1.1.0-dev1
+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
+  - position: ${return null;}
+    valueFrom: 🕺
+outputs:
+  out:
+    type: string
+    outputBinding:
+      glob: out.txt
+      loadContents: true
+      outputEval: $(self[0].contents)
+baseCommand: echo
+stdout: out.txt