Add json output (fixes #20)

README.md

@@ -31,6 +31,10 @@ python -m aas_test_engines check_server https://localhost --suite 'Asset Adminis
 
 # Generate test data
 python -m aas_test_engines generate_files output_dir
+
+# Alternative output formats
+python -m aas_test_engines check_file test.aasx --output html > output.html
+python -m aas_test_engines check_file test.aasx --output json > output.json
 ```
 
 ## Check AAS Type 1 (File)

aas_test_engines/__main__.py

@@ -1,11 +1,12 @@
 import argparse
 import sys
 import os
+import json
 from aas_test_engines import api, file
 from enum import Enum
 
 
-class Formats(Enum):
+class InputFormats(Enum):
     xml = 'xml'
     json = 'json'
     aasx = 'aasx'
@@ -14,40 +15,51 @@ def __str__(self):
         return self.value
 
 
+class OutputFormats(Enum):
+    TEXT = 'text'
+    JSON = 'json'
+    HTML = 'html'
+
+
 def run_file_test(argv):
     parser = argparse.ArgumentParser(description='Checks a file for compliance with the AAS meta-model')
     parser.add_argument('file',
                         type=argparse.FileType('rb'),
                         help='the file to check')
     parser.add_argument('--format',
-                        type=Formats,
-                        default=Formats.aasx,
-                        choices=list(Formats))
+                        type=InputFormats,
+                        default=InputFormats.aasx,
+                        choices=list(InputFormats))
     parser.add_argument('--submodel_template',
                         type=str,
                         default=None,
                         help="Additionally check for compliance to a submodel template")
-    parser.add_argument('--html',
-                        type=argparse.FileType('w'),
-                        default=None)
+    parser.add_argument('--output',
+                        type=OutputFormats,
+                        default=OutputFormats.TEXT,
+                        choices=list(OutputFormats))
     args = parser.parse_args(argv)
     if args.submodel_template is None:
         submodel_templates = set()
     else:
         submodel_templates = set([args.submodel_template])
 
-    if args.format == Formats.aasx:
+    if args.format == InputFormats.aasx:
         result = file.check_aasx_file(args.file)
-    elif args.format == Formats.json:
+    elif args.format == InputFormats.json:
         result = file.check_json_file(args.file, submodel_templates=submodel_templates)
-    elif args.format == Formats.xml:
+    elif args.format == InputFormats.xml:
         result = file.check_xml_file(args.file)
     else:
         raise Exception(f"Invalid format {args.format}")
-    if args.html:
-        args.html.write(result.to_html())
-    else:
+    if args.output == OutputFormats.TEXT:
         result.dump()
+    elif args.output == OutputFormats.HTML:
+        print(result.to_html())
+    elif args.output == OutputFormats.JSON:
+        print(json.dumps(result.to_dict()))
+    else:
+        raise Exception(f"Invalid output {args.output}")
 
 
 def run_api_test(argv):
@@ -97,6 +109,7 @@ def generate_files(argv):
         if i > 100:
             break
 
+
 commands = {
     'check_file': run_file_test,
     'check_server': run_api_test,

aas_test_engines/result.py

@@ -75,12 +75,12 @@ def to_html(self) -> str:
             content = f.read()
         return content.replace("<!-- CONTENT -->", self._to_html())
 
-    def to_json(self):
+    def to_dict(self):
         return {
             'm': self.message,
             'f': self.path_fragment,
             'l': self.level.value,
-            's': [i.to_json() for i in self.sub_results]
+            's': [i.to_dict() for i in self.sub_results]
         }
 
     @classmethod

test/test_result.py

@@ -34,7 +34,7 @@ def test_dump(self):
         self.result.dump()
 
     def test_to_json(self):
-        j = self.result.to_json()
+        j = self.result.to_dict()
         result = AasTestResult.from_json(j)
         self.assertEqual(len(self.result.sub_results), len(result.sub_results))
         self.assertEqual(self.result.level, result.level)