Forward-port metashacl flag from pyshacl

A follow-on patch will regenerate Make-managed files.

References:
* #74
* ucoProject/UCO#504

Signed-off-by: Alex Nelson <alexander.nelson@nist.gov>

case_utils/case_validate/__init__.py

@@ -122,6 +122,14 @@ def main() -> None:
         default="none",
         help='(As with pyshacl CLI) Choose a type of inferencing to run against the Data Graph before validating. Default is "none".',
     )
+    parser.add_argument(
+        "-m",
+        "--metashacl",
+        dest="metashacl",
+        action="store_true",
+        default=False,
+        help="(As with pyshacl CLI) Validate the SHACL Shapes graph against the shacl-shacl Shapes Graph before validating the Data Graph.",
+    )
     parser.add_argument(
         "-o",
         "--output",
@@ -170,6 +178,7 @@ def main() -> None:
         shacl_graph=ontology_graph,
         ont_graph=ontology_graph,
         inference=args.inference,
+        meta_shacl=args.metashacl,
         abort_on_first=args.abort,
         allow_infos=True if args.allow_infos else False,
         allow_warnings=True if args.allow_warnings else False,

tests/case_utils/case_validate/cli/Makefile

@@ -41,7 +41,8 @@ files_to_generate := \
   format_unspecified_output_txt.txt \
   format_unspecified_output_unspecified.txt \
   split_data_graph_PASS.txt \
-  split_data_graph_XFAIL.txt
+  split_data_graph_XFAIL.txt \
+  thing_metashacl_PASS.txt
 
 all: \
   $(files_to_generate)
@@ -216,3 +217,17 @@ split_data_graph_XFAIL.txt: \
 	    > _$@ \
 	    ; rc=$$? ; test 1 -eq $$rc
 	mv _$@ $@
+
+thing_metashacl_PASS.txt: \
+  $(tests_srcdir)/.venv.done.log \
+  $(top_srcdir)/.ontology.done.log \
+  $(top_srcdir)/case_utils/case_validate/__init__.py \
+  $(top_srcdir)/case_utils/ontology/__init__.py \
+  thing.ttl
+	rm -f _$@
+	source $(tests_srcdir)/venv/bin/activate \
+	  && case_validate \
+	    --metashacl \
+	    thing.ttl \
+	    > _$@
+	mv _$@ $@

tests/case_utils/case_validate/cli/thing.ttl

@@ -0,0 +1,9 @@
+@prefix owl: <http://www.w3.org/2002/07/owl#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
+
+[]
+	a owl:Thing ;
+	.
+