sanic#1480 Allow negative int/number in path (#1481)

* sanic#1480 Allow negative int/number

* Rerun ``make beautify`` on this change.

sanic/router.py

@@ -17,8 +17,8 @@ Parameter = namedtuple("Parameter", ["name", "cast"])
 
 REGEX_TYPES = {
     "string": (str, r"[^/]+"),
-    "int": (int, r"\d+"),
-    "number": (float, r"[0-9\\.]+"),
+    "int": (int, r"-?\d+"),
+    "number": (float, r"-?[0-9\\.]+"),
     "alpha": (str, r"[A-Za-z]+"),
     "path": (str, r"[^/].*?"),
     "uuid": (

tests/test_url_building.py

@@ -170,11 +170,27 @@ def test_fails_with_int_message(app):
 
     expected_error = (
         'Value "not_int" for parameter `foo` '
-        "does not match pattern for type `int`: \d+"
+        "does not match pattern for type `int`: -?\d+"
     )
     assert str(e.value) == expected_error
 
 
+def test_passes_with_negative_int_message(app):
+    @app.route("path/<possibly_neg:int>/another-word")
+    def good(request, possibly_neg):
+        assert isinstance(possibly_neg, int)
+        return text("this should pass with `{}`".format(possibly_neg))
+
+    u_plus_3 = app.url_for("good", possibly_neg=3)
+    assert u_plus_3 == "/path/3/another-word", u_plus_3
+    request, response = app.test_client.get(u_plus_3)
+    assert response.text == "this should pass with `3`"
+    u_neg_3 = app.url_for("good", possibly_neg=-3)
+    assert u_neg_3 == "/path/-3/another-word", u_neg_3
+    request, response = app.test_client.get(u_neg_3)
+    assert response.text == "this should pass with `-3`"
+
+
 def test_fails_with_two_letter_string_message(app):
     @app.route(COMPLEX_PARAM_URL)
     def fail(request):
@@ -207,12 +223,26 @@ def test_fails_with_number_message(app):
 
     expected_error = (
         'Value "foo" for parameter `some_number` '
-        "does not match pattern for type `float`: [0-9\\\\.]+"
+        "does not match pattern for type `float`: -?[0-9\\\\.]+"
     )
 
     assert str(e.value) == expected_error
 
 
+@pytest.mark.parametrize("number", [3, -3, 13.123, -13.123])
+def test_passes_with_negative_number_message(app, number):
+    @app.route("path/<possibly_neg:number>/another-word")
+    def good(request, possibly_neg):
+        assert isinstance(possibly_neg, (int, float))
+        return text("this should pass with `{}`".format(possibly_neg))
+
+    u = app.url_for("good", possibly_neg=number)
+    assert u == "/path/{}/another-word".format(number), u
+    request, response = app.test_client.get(u)
+    # For ``number``, it has been cast to a float - so a ``3`` becomes a ``3.0``
+    assert response.text == "this should pass with `{}`".format(float(number))
+
+
 def test_adds_other_supplied_values_as_query_string(app):
     @app.route(COMPLEX_PARAM_URL)
     def passes(request):