import unittest
from clamp import clamp


class TestClamp(unittest.TestCase):
    def test_basic(self):
        self.assertEqual(clamp(5, 0, 10), 5)
        self.assertEqual(clamp(-3, 0, 10), 0)
        self.assertEqual(clamp(15, 0, 10), 10)
    def test_bounds_equal(self):
        self.assertEqual(clamp(5, 7, 7), 7)
    def test_lo_gt_hi_raises(self):
        with self.assertRaises(ValueError):
            clamp(5, 10, 0)
    def test_floats(self):
        self.assertEqual(clamp(1.5, 0.0, 1.0), 1.0)


if __name__ == "__main__":
    unittest.main()