Added tests for `pyjwt.compat.constant_time_compare`

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/test_compat.py b/tests/test_compat.py
index e69de29..34f91db 100644
--- a/tests/test_compat.py
+++ b/tests/test_compat.py
@@ -0,0 +1,16 @@
+from .compat import unittest
+
+from jwt.compat import constant_time_compare
+
+class TestCompat(unittest.TestCase):
+    def setUp(self):  # noqa
+        pass
+
+    def test_constant_time_compare_returns_true_if_same(self):
+        self.assertTrue(constant_time_compare('abc', 'abc'))
+
+    def test_constant_time_compare_returns_false_if_diff_lengths(self):
+        self.assertFalse(constant_time_compare('abc', 'abcd'))
+
+    def test_constant_time_compare_returns_false_if_totally_different(self):
+        self.assertFalse(constant_time_compare('abcd', 'efgh'))