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4770fedf7a
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50876 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
75 lines
3.5 KiB
Ruby
75 lines
3.5 KiB
Ruby
require 'test/unit'
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require 'cmath'
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class TestCMath < Test::Unit::TestCase
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def test_sqrt
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assert_equal CMath.sqrt(1i), CMath.sqrt(1.0i), '[ruby-core:31672]'
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assert_equal Complex(0,2), CMath.sqrt(-4.0)
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assert_equal Complex(0,2), CMath.sqrt(-4)
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assert_equal Complex(0,2), CMath.sqrt(Rational(-4))
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assert_equal Complex(0,3), CMath.sqrt(-9.0)
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assert_equal Complex(0,3), CMath.sqrt(-9)
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assert_equal Complex(0,3), CMath.sqrt(Rational(-9))
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assert_in_delta (1.272019649514069+0.7861513777574233i), CMath.sqrt(1+2i)
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assert_in_delta 3.0i, CMath.sqrt(-9)
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end
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def test_log
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assert_in_delta (0.8047189562170503+1.1071487177940904i), CMath.log(1+2i)
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assert_in_delta (0.7324867603589635+1.0077701926457874i), CMath.log(1+2i,3)
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assert_in_delta Math::PI*1i , CMath.log(-1)
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assert_in_delta 3.0 , CMath.log(8, 2)
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assert_in_delta (1.092840647090816-0.42078724841586035i), CMath.log(-8, -2)
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end
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def test_trigonometric_functions
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assert_in_delta CMath.sinh(2).i, CMath.sin(2i)
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assert_in_delta CMath.cosh(2), CMath.cos(2i)
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assert_in_delta CMath.tanh(2).i, CMath.tan(2i)
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assert_in_delta CMath.sin(2).i, CMath.sinh(2i)
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assert_in_delta CMath.cos(2), CMath.cosh(2i)
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assert_in_delta CMath.tan(2).i, CMath.tanh(2i)
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assert_in_delta 1+1i, CMath.sin(CMath.asin(1+1i))
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assert_in_delta 1+1i, CMath.cos(CMath.acos(1+1i))
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assert_in_delta 1+1i, CMath.tan(CMath.atan(1+1i))
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assert_in_delta 1+1i, CMath.sinh(CMath.asinh(1+1i))
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assert_in_delta 1+1i, CMath.cosh(CMath.acosh(1+1i))
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assert_in_delta 1+1i, CMath.tanh(CMath.atanh(1+1i))
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assert_in_delta (3.165778513216168+1.959601041421606i), CMath.sin(1+2i)
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assert_in_delta (2.0327230070196656-3.0518977991517997i), CMath.cos(1+2i)
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assert_in_delta (0.033812826079896774+1.0147936161466338i), CMath.tan(1+2i)
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assert_in_delta (-0.4890562590412937+1.4031192506220405i), CMath.sinh(1+2i)
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assert_in_delta (-0.64214812471552+1.0686074213827783i), CMath.cosh(1+2i)
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assert_in_delta (1.16673625724092-0.2434582011857252i), CMath.tanh(1+2i)
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assert_in_delta (0.4270785863924755+1.5285709194809978i), CMath.asin(1+2i)
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assert_in_delta (1.1437177404024204-1.528570919480998i), CMath.acos(1+2i)
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assert_in_delta (1.3389725222944935+0.4023594781085251i), CMath.atan(1+2i)
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assert_in_delta (1.4693517443681852+1.0634400235777521i), CMath.asinh(1+2i)
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assert_in_delta (1.528570919480998+1.1437177404024204i), CMath.acosh(1+2i)
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assert_in_delta (0.17328679513998635+1.1780972450961724i), CMath.atanh(1+2i)
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end
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def test_functions
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assert_in_delta (-1.1312043837568135+2.4717266720048188i), CMath.exp(1+2i)
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assert_in_delta (-1), CMath.exp(Math::PI.i)
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assert_in_delta (1.1609640474436813+1.5972779646881088i), CMath.log2(1+2i)
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assert_in_delta (0.3494850021680094+0.480828578784234i), CMath.log10(1+2i)
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assert_in_delta (1.3389725222944935+0.4023594781085251i), CMath.atan2(1+2i,1)
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end
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def test_error_handling
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assert_raise_with_message(TypeError, "Numeric Number required") { CMath.acos("2") }
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assert_raise_with_message(TypeError, "Numeric Number required") { CMath.log("2") }
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assert_raise(ArgumentError) { CMath.log(2, "2") }
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assert_raise(NoMethodError) { CMath.log(2, 2i) }
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assert_raise(RangeError) { CMath.hypot(2i, 2i) }
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end
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def test_cbrt_returns_principal_value_of_cube_root
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assert_equal (-8)**(1.0/3), CMath.cbrt(-8), '#3676'
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end
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end
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