Uploaded Test files

venv/Lib/site-packages/jsonschema/tests/test_format.py

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+"""
+Tests for the parts of jsonschema related to the :validator:`format` property.
+"""
+
+from unittest import TestCase
+
+from jsonschema import FormatError, ValidationError, FormatChecker
+from jsonschema.validators import Draft4Validator
+
+
+BOOM = ValueError("Boom!")
+BANG = ZeroDivisionError("Bang!")
+
+
+def boom(thing):
+    if thing == "bang":
+        raise BANG
+    raise BOOM
+
+
+class TestFormatChecker(TestCase):
+    def test_it_can_validate_no_formats(self):
+        checker = FormatChecker(formats=())
+        self.assertFalse(checker.checkers)
+
+    def test_it_raises_a_key_error_for_unknown_formats(self):
+        with self.assertRaises(KeyError):
+            FormatChecker(formats=["o noes"])
+
+    def test_it_can_register_cls_checkers(self):
+        original = dict(FormatChecker.checkers)
+        self.addCleanup(FormatChecker.checkers.pop, "boom")
+        FormatChecker.cls_checks("boom")(boom)
+        self.assertEqual(
+            FormatChecker.checkers,
+            dict(original, boom=(boom, ())),
+        )
+
+    def test_it_can_register_checkers(self):
+        checker = FormatChecker()
+        checker.checks("boom")(boom)
+        self.assertEqual(
+            checker.checkers,
+            dict(FormatChecker.checkers, boom=(boom, ()))
+        )
+
+    def test_it_catches_registered_errors(self):
+        checker = FormatChecker()
+        checker.checks("boom", raises=type(BOOM))(boom)
+
+        with self.assertRaises(FormatError) as cm:
+            checker.check(instance=12, format="boom")
+
+        self.assertIs(cm.exception.cause, BOOM)
+        self.assertIs(cm.exception.__cause__, BOOM)
+
+        # Unregistered errors should not be caught
+        with self.assertRaises(type(BANG)):
+            checker.check(instance="bang", format="boom")
+
+    def test_format_error_causes_become_validation_error_causes(self):
+        checker = FormatChecker()
+        checker.checks("boom", raises=ValueError)(boom)
+        validator = Draft4Validator({"format": "boom"}, format_checker=checker)
+
+        with self.assertRaises(ValidationError) as cm:
+            validator.validate("BOOM")
+
+        self.assertIs(cm.exception.cause, BOOM)
+        self.assertIs(cm.exception.__cause__, BOOM)
+
+    def test_format_checkers_come_with_defaults(self):
+        # This is bad :/ but relied upon.
+        # The docs for quite awhile recommended people do things like
+        # validate(..., format_checker=FormatChecker())
+        # We should change that, but we can't without deprecation...
+        checker = FormatChecker()
+        with self.assertRaises(FormatError):
+            checker.check(instance="not-an-ipv4", format="ipv4")
+
+    def test_repr(self):
+        checker = FormatChecker(formats=())
+        checker.checks("foo")(lambda thing: True)
+        checker.checks("bar")(lambda thing: True)
+        checker.checks("baz")(lambda thing: True)
+        self.assertEqual(
+            repr(checker),
+            "<FormatChecker checkers=['bar', 'baz', 'foo']>",
+        )