from polynomial import Polynomial
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EPSILON = 0.001
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def test_polynomial_representation():
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c = Polynomial(5, 6, 0, -7)
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s = f'{c}'
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assert s == '5 6 0 -7'
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def test_evaluate():
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l = Polynomial(-12.5, 3.6)
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x = 0.0
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(y, rest) = l.evaluate(x)
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assert abs(y + 12.5) < EPSILON
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def test_evaluate_2():
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l = Polynomial(11, 7, -5, -4, 2)
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x = 2
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rest_expected = [-3, -5, 0, 2]
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y_expected = 5
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(y, rest) = l.evaluate(x)
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assert abs(y - y_expected) < EPSILON
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for (i, r) in enumerate( rest_expected ):
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assert abs(r - rest[i]) < EPSILON
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if __name__ == "__main__":
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test_evaluate_2()
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