29 lines
1.2 KiB
Ruby
29 lines
1.2 KiB
Ruby
class TestBinomialDistribution < Test::Unit::TestCase
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def test_simple
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0.0.step(by: 0.1, to: 1.0) do |proba|
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assert_equal proba, Math.binomial_distribution(tries: 1, probability: proba, success: 1)
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end
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end
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def test_nonamed_arguments
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assert_equal 0.4, Math.binomial_distribution(tries: 1, probability: 0.4, success: 1)
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assert_equal 0.4, Math.binomial_distribution(1, probability: 0.4, success: 1)
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assert_equal 0.4, Math.binomial_distribution(1, tries: 1, probability: 0.4)
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assert_equal 0.4, Math.binomial_distribution(0.4, tries: 1, success: 1)
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assert_equal 0.4, Math.binomial_distribution(1, 0.4, success: 1)
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assert_equal 0.4, Math.binomial_distribution(0.4, 1, tries: 1)
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assert_equal 0.4, Math.binomial_distribution(1, 0.4, 1)
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assert_equal 0.4, Math.binomial_distribution(1, 1, probability: 0.4)
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end
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def test_enum
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t3 = Math.binomial_distribution(tries: 10, probability: 0.1, success: 3)
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t2 = Math.binomial_distribution(tries: 10, probability: 0.1, success: 2)
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t1 = Math.binomial_distribution(tries: 10, probability: 0.1, success: 1)
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tt = Math.binomial_distribution(tries: 10, probability: 0.1, success: [1,2,3])
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assert_equal t3 + t2 + t1, tt
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end
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end
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