64 lines
2.1 KiB
Python
64 lines
2.1 KiB
Python
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# retoor <retoor@molodetz.nl>
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import math
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import unittest
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from src.calculator import clamp
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class TestClampFunction(unittest.TestCase):
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def test_value_below_low_returns_low(self) -> None:
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self.assertEqual(clamp(-5, 0, 10), 0)
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def test_value_above_high_returns_high(self) -> None:
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self.assertEqual(clamp(15, 0, 10), 10)
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def test_value_in_range_returns_value(self) -> None:
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self.assertEqual(clamp(5, 0, 10), 5)
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def test_value_equals_low_returns_low(self) -> None:
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self.assertEqual(clamp(0, 0, 10), 0)
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def test_value_equals_high_returns_high(self) -> None:
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self.assertEqual(clamp(10, 0, 10), 10)
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def test_low_greater_than_high_raises_value_error(self) -> None:
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with self.assertRaises(ValueError):
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clamp(5, 10, 0)
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def test_all_negative_values(self) -> None:
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self.assertEqual(clamp(-10, -5, -1), -5)
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def test_float_value_below_low_returns_low_as_int(self) -> None:
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self.assertEqual(clamp(-1.0, 0, 10), 0)
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def test_float_value_above_high_returns_high_as_int(self) -> None:
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self.assertEqual(clamp(15.0, 0, 10), 10)
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def test_float_value_in_range_returns_float(self) -> None:
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result = clamp(5.0, 0, 10)
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self.assertIsInstance(result, float)
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self.assertEqual(result, 5.0)
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def test_float_value_equals_boundary_returns_boundary(self) -> None:
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self.assertEqual(clamp(0.0, 0, 10), 0)
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self.assertEqual(clamp(10.0, 0, 10), 10)
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def test_float_low_greater_than_float_high_raises_value_error(self) -> None:
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with self.assertRaises(ValueError):
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clamp(5.0, 10.0, 0.0)
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def test_large_values(self) -> None:
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self.assertEqual(clamp(10**9, 0, 10**6), 10**6)
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def test_negative_infinity_not_clamped_by_default(self) -> None:
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self.assertEqual(clamp(-math.inf, 0, 10), 0)
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def test_positive_infinity_not_clamped_by_default(self) -> None:
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self.assertEqual(clamp(math.inf, 0, 10), 10)
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def test_nan_returns_nan(self) -> None:
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result = clamp(math.nan, 0, 10)
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self.assertTrue(math.isnan(result))
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