Add a conformance test for MultipleInputFeatureRequirement on Workflow outputs (#169)

Author: kinow

conformance_tests.yaml

@@ -3570,6 +3570,18 @@
     and capture the output correctly.
   tags: [ shell_command, command_line_tool ]
 
+- label: multiple-input-feature-requirement
+  output: {
+    "hello_world_in_two_lines": [
+      "hello\n",
+      "world\n"
+    ]
+  }
+  tool: tests/multiple_input_feature_requirement.cwl
+  doc: |
+    MultipleInputFeatureRequirement on workflow outputs.
+  tags: [ workflow, multiple_input ]
+
 - label: js-input-record
   # The output does not have the last \n due to the -n passed to echo
   output: {

tests/multiple_input_feature_requirement.cwl

@@ -0,0 +1,29 @@
+cwlVersion: v1.2
+class: Workflow
+
+requirements:
+  - class: MultipleInputFeatureRequirement
+
+inputs: []
+
+steps:
+  step1:
+    run: echo-tool.cwl
+    in:
+      in:
+        default: hello
+    out: [out]
+  step2:
+    run: echo-tool.cwl
+    in:
+      in:
+        default: world
+    out: [out]
+
+outputs:
+  hello_world_in_two_lines:
+    type:
+      type: array
+      items: string
+    # Only allowed with MultipleInputFeatureRequirement
+    outputSource: [step1/out, step2/out]