add URL validator implementation & tests

requirements.txt

@@ -1 +1,2 @@
 tox==4.13.0
+validators==0.34.0

tox.ini

@@ -12,3 +12,4 @@ deps =
   ruamel.yaml<1
   pytest<7
   pytest-cov<4
+  validators>0.33.0

yamale/VERSION

@@ -1 +1 @@
-5.2.1
+5.2.2

yamale/tests/fixtures/urls_bad.yaml

@@ -0,0 +1,7 @@
+urls:
+  - ""
+  - "-11.0.1"
+  - "http://256.256.256.256"
+  - "x://example-bad-protocol.com"
+  - "https://bad-domain"
+  - "http:///"

yamale/tests/fixtures/urls_good.yaml

@@ -0,0 +1,7 @@
+urls: 
+  - "http://123.123.123.123"
+  - "https://123.123.123.123/"
+  - "http://example.com"
+  - "https://example.com/"
+  - "https://example.com/path1/subpath1"
+  - "https://example.com/path2/subpath2?arg2=2#section"

yamale/tests/fixtures/urls_schema.yaml

@@ -0,0 +1 @@
+urls: list(url())

yamale/validators/validators.py

@@ -1,6 +1,8 @@
 import re
 from datetime import date, datetime
 import ipaddress
+import validators
+
 from .base import Validator
 from . import constraints as con
 from .. import util
@@ -260,6 +262,14 @@ def __init__(self, *args, **kwargs):
             re.compile(r"^(?P<major>0|[1-9]\d*)\.(?P<minor>0|[1-9]\d*)\.(?P<patch>0|[1-9]\d*)(?:-(?P<prerelease>(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+(?P<buildmetadata>[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$"),
         ]
 
+class Url(Validator):
+    """URL validator"""
+
+    tag = "url"
+
+    def _is_valid(self, value):
+        return validators.url(value)
+
 
 DefaultValidators = {}