Initial commit with translated description

tests/test_location_rounding.py

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+import unittest
+
+from scripts.tesla import _round_coord
+
+
+class TestLocationRounding(unittest.TestCase):
+    def test_round_coord_basic(self):
+        self.assertEqual(_round_coord(37.123456, 2), 37.12)
+        self.assertEqual(_round_coord(-122.987654, 2), -122.99)
+
+    def test_round_coord_digits_range(self):
+        # Reject overly-precise / invalid digit counts.
+        self.assertIsNone(_round_coord(1.2345, -1))
+        self.assertIsNone(_round_coord(1.2345, 7))
+
+        # Allow the full supported range.
+        self.assertEqual(_round_coord(1.2345678, 0), 1.0)
+        self.assertEqual(_round_coord(1.2345678, 6), 1.234568)
+
+    def test_round_coord_invalid_inputs(self):
+        self.assertIsNone(_round_coord(None, 2))
+        self.assertIsNone(_round_coord("", 2))
+        self.assertIsNone(_round_coord(1.23, "nope"))
+
+
+if __name__ == "__main__":
+    unittest.main()