test_rdfprint.py: Add tests for printrdf functionality

Author: manu-chroma

tests/test_rdfprint.py

@@ -0,0 +1,55 @@
+from __future__ import absolute_import
+import unittest
+
+from six import StringIO
+from cwltool.main import main
+
+class RDF_Print(unittest.TestCase):
+
+    def test_rdf_print(self):
+        self.maxDiff = None
+
+        expected_output = """@prefix CommandLineBinding: <https://w3id.org/cwl/cwl#CommandLineBinding/> .
+@prefix CommandLineTool: <https://w3id.org/cwl/cwl#CommandLineTool/> .
+@prefix CommandOutputBinding: <https://w3id.org/cwl/cwl#CommandOutputBinding/> .
+@prefix Dirent: <https://w3id.org/cwl/cwl#Dirent/> .
+@prefix DockerRequirement: <https://w3id.org/cwl/cwl#DockerRequirement/> .
+@prefix EnvVarRequirement: <https://w3id.org/cwl/cwl#EnvVarRequirement/> .
+@prefix EnvironmentDef: <https://w3id.org/cwl/cwl#EnvironmentDef/> .
+@prefix ExpressionTool: <https://w3id.org/cwl/cwl#ExpressionTool/> .
+@prefix File: <https://w3id.org/cwl/cwl#File/> .
+@prefix InlineJavascriptRequirement: <https://w3id.org/cwl/cwl#InlineJavascriptRequirement/> .
+@prefix LinkMergeMethod: <https://w3id.org/cwl/cwl#LinkMergeMethod/> .
+@prefix Parameter: <https://w3id.org/cwl/cwl#Parameter/> .
+@prefix ResourceRequirement: <https://w3id.org/cwl/cwl#ResourceRequirement/> .
+@prefix ScatterMethod: <https://w3id.org/cwl/cwl#ScatterMethod/> .
+@prefix SchemaDefRequirement: <https://w3id.org/cwl/cwl#SchemaDefRequirement/> .
+@prefix SoftwarePackage: <https://w3id.org/cwl/cwl#SoftwarePackage/> .
+@prefix SoftwareRequirement: <https://w3id.org/cwl/cwl#SoftwareRequirement/> .
+@prefix Workflow: <https://w3id.org/cwl/cwl#Workflow/> .
+@prefix cwl: <https://w3id.org/cwl/cwl#> .
+@prefix ns1: <rdfs:> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix sld: <https://w3id.org/cwl/salad#> .
+@prefix xml: <http://www.w3.org/XML/1998/namespace> .
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
+
+<https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl> a cwl:Workflow ;
+    Workflow:steps <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#step0> ;
+    cwl:cwlVersion cwl:v1.0 ;
+    cwl:outputs <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#response> ;
+    ns1:comment "Outputs a message using echo" ;
+    ns1:label "Hello World" .
+
+<https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#response> cwl:outputSource <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#step0/response> ;
+    sld:type cwl:File .
+"""
+
+        argsl = ['--print-rdf', 'https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl']
+
+        # capture stdout
+        out = StringIO()
+        main(argsl=argsl, stdout=out)
+        # check substring in the actual print-rdf
+        self.assertTrue(expected_output in out.getvalue(), True)