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13 lines
541 B
Ruby
13 lines
541 B
Ruby
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require File.expand_path('../../../spec_helper', __FILE__)
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describe :complex_abs, shared: true do
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it "returns the modulus: |a + bi| = sqrt((a ^ 2) + (b ^ 2))" do
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Complex(0, 0).send(@method).should == 0
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Complex(3, 4).send(@method).should == 5 # well-known integer case
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Complex(-3, 4).send(@method).should == 5
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Complex(1, -1).send(@method).should be_close(Math.sqrt(2), TOLERANCE)
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Complex(6.5, 0).send(@method).should be_close(6.5, TOLERANCE)
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Complex(0, -7.2).send(@method).should be_close(7.2, TOLERANCE)
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end
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end
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