sync from local backup

user/tests/test_slider_captcha.py

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+import json
+from django.test import TestCase
+from django.core.cache import caches
+from utils.slider_captcha import (
+    generate_slider_captcha,
+    verify_slider_captcha,
+    SliderCaptchaError
+)
+
+default_cache = caches['default']
+
+
+class TestGenerateSliderCaptcha(TestCase):
+    def test_generate_returns_required_keys(self):
+        result = generate_slider_captcha()
+        self.assertIn('captcha_key', result)
+        self.assertIn('bg_image', result)
+        self.assertIn('slider_image', result)
+        self.assertIn('y_position', result)
+
+    def test_generate_returns_valid_captcha_key(self):
+        result = generate_slider_captcha()
+        captcha_key = result['captcha_key']
+        self.assertIsInstance(captcha_key, str)
+        self.assertEqual(len(captcha_key), 36)
+
+    def test_generate_returns_base64_images(self):
+        result = generate_slider_captcha()
+        self.assertTrue(result['bg_image'].startswith('data:image/png;base64,'))
+        self.assertTrue(result['slider_image'].startswith('data:image/png;base64,'))
+
+    def test_generate_stores_position_in_cache(self):
+        result = generate_slider_captcha()
+        captcha_key = result['captcha_key']
+        cached_data = default_cache.get(f'slider_captcha_{captcha_key}')
+        self.assertIsNotNone(cached_data)
+        self.assertIn('x_position', cached_data)
+        self.assertIn('y_position', cached_data)
+        self.assertIn('timestamp', cached_data)
+
+
+class TestVerifySliderCaptcha(TestCase):
+    def setUp(self):
+        self.captcha_data = generate_slider_captcha()
+        self.captcha_key = self.captcha_data['captcha_key']
+        cached = default_cache.get(f'slider_captcha_{self.captcha_key}')
+        self.correct_x = cached['x_position']
+
+    def test_verify_correct_position(self):
+        result = verify_slider_captcha(self.captcha_key, self.correct_x)
+        self.assertTrue(result)
+
+    def test_verify_wrong_position(self):
+        result = verify_slider_captcha(self.captcha_key, self.correct_x + 50)
+        self.assertFalse(result)
+
+    def test_verify_expired_captcha(self):
+        default_cache.delete(f'slider_captcha_{self.captcha_key}')
+        with self.assertRaises(SliderCaptchaError):
+            verify_slider_captcha(self.captcha_key, self.correct_x)
+
+    def test_verify_tolerance(self):
+        result = verify_slider_captcha(self.captcha_key, self.correct_x + 3)
+        self.assertTrue(result)
+
+    def test_verify_clears_cache_after_success(self):
+        verify_slider_captcha(self.captcha_key, self.correct_x)
+        cached = default_cache.get(f'slider_captcha_{self.captcha_key}')
+        self.assertIsNone(cached)
+
+
+class TestVerifySliderTrajectory(TestCase):
+    def setUp(self):
+        self.captcha_data = generate_slider_captcha()
+        self.captcha_key = self.captcha_data['captcha_key']
+        cached = default_cache.get(f'slider_captcha_{self.captcha_key}')
+        self.correct_x = cached['x_position']
+
+    def test_verify_with_valid_trajectory(self):
+        from utils.slider_captcha import verify_slider_trajectory
+
+        trajectory = [
+            {'x': 0, 'y': 150, 't': 0},
+            {'x': 50, 'y': 152, 't': 100},
+            {'x': 100, 'y': 148, 't': 200},
+            {'x': 150, 'y': 151, 't': 300},
+            {'x': self.correct_x, 'y': 150, 't': 400},
+        ]
+        result = verify_slider_trajectory(self.captcha_key, self.correct_x, trajectory)
+        self.assertTrue(result)
+
+    def test_verify_with_suspicious_trajectory(self):
+        from utils.slider_captcha import verify_slider_trajectory
+
+        trajectory = [
+            {'x': 0, 'y': 150, 't': 0},
+            {'x': 100, 'y': 150, 't': 100},
+            {'x': 200, 'y': 150, 't': 200},
+        ]
+        result = verify_slider_trajectory(self.captcha_key, self.correct_x, trajectory)
+        self.assertFalse(result)