start implementing a validation layer, refs #215

test/property/validators/test_number_validator.py

@@ -0,0 +1,18 @@
+from unittest import TestCase
+from owrx.property.validators import NumberValidator
+
+
+class NumberValidatorTest(TestCase):
+    def testPassesNumbers(self):
+        validator = NumberValidator()
+        self.assertTrue(validator.isValid(123))
+        self.assertTrue(validator.isValid(-2))
+        self.assertTrue(validator.isValid(.5))
+
+    def testDoesntPassOthers(self):
+        validator = NumberValidator()
+        # bool is a subclass of int, so it passes this test.
+        # not sure if we need to be more specific or if this is alright.
+        # self.assertFalse(validator.isValid(True))
+        self.assertFalse(validator.isValid("text"))
+        self.assertFalse(validator.isValid(object()))