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30 lines
1.3 KiB
Ruby
30 lines
1.3 KiB
Ruby
require_relative '../fixtures/classes'
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describe :complex_math_cos, shared: true do
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it "returns the cosine of the argument expressed in radians" do
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@object.send(:cos, CMath::PI).should be_close(-1.0, TOLERANCE)
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@object.send(:cos, 0).should be_close(1.0, TOLERANCE)
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@object.send(:cos, CMath::PI/2).should be_close(0.0, TOLERANCE)
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@object.send(:cos, 3*Math::PI/2).should be_close(0.0, TOLERANCE)
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@object.send(:cos, 2*Math::PI).should be_close(1.0, TOLERANCE)
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end
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it "returns the cosine for Complex numbers" do
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@object.send(:cos, Complex(0, CMath::PI)).should be_close(Complex(11.5919532755215, 0.0), TOLERANCE)
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@object.send(:cos, Complex(3, 4)).should be_close(Complex(-27.0349456030742, -3.85115333481178), TOLERANCE)
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end
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end
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describe :complex_math_cos_bang, shared: true do
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it "returns the cosine of the argument expressed in radians" do
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@object.send(:cos!, CMath::PI).should be_close(-1.0, TOLERANCE)
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@object.send(:cos!, 0).should be_close(1.0, TOLERANCE)
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@object.send(:cos!, CMath::PI/2).should be_close(0.0, TOLERANCE)
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@object.send(:cos!, 3*Math::PI/2).should be_close(0.0, TOLERANCE)
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@object.send(:cos!, 2*Math::PI).should be_close(1.0, TOLERANCE)
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end
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it "raises a TypeError when passed a Complex number" do
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-> { @object.send(:cos!, Complex(3, 4)) }.should raise_error(TypeError)
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end
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end
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