add JUnit schema and validator

Signed-off-by: N. Engelhardt <nak@yosyshq.com>

tests/validate_junit.py

@@ -0,0 +1,19 @@
+from xmlschema import XMLSchema, XMLSchemaValidationError
+import argparse
+
+def main():
+    parser = argparse.ArgumentParser(description="Validate JUnit output")
+    parser.add_argument('xml')
+    parser.add_argument('--xsd', default="JUnit.xsd")
+
+    args = parser.parse_args()
+
+    schema = XMLSchema(args.xsd)
+    try:
+        schema.validate(args.xml)
+    except XMLSchemaValidationError as e:
+        print(e)
+        exit(1)
+
+if __name__ == '__main__':
+    main()