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Contents
require File.dirname(File.join(__rhoGetCurrentDir(), __FILE__)) + '/../../spec_helper'
require File.dirname(File.join(__rhoGetCurrentDir(), __FILE__)) + '/fixtures/classes'
describe "Math.sqrt" do
it "returns a float" do
Math.sqrt(1).class.should == Float
end
it "returns the square root of the argument" do
Math.sqrt(1).should == 1.0
Math.sqrt(4.0).should == 2.0
Math.sqrt(15241578780673814.441547445).to_s.should == '123456789.123457'
end
it "raises an ArgumentError if the argument cannot be coerced with Float()" do
lambda { Math.sqrt("test") }.should raise_error(ArgumentError)
end
it "raises a TypeError if the argument is nil" do
lambda { Math.sqrt(nil) }.should raise_error(TypeError)
end
it "accepts any argument that can be coerced with Float()" do
Math.sqrt(MathSpecs::Float.new).should be_close(1.0, TOLERANCE)
end
end
describe "Math#sqrt" do
it "is accessible as a private instance method" do
IncludesMath.new.send(:sqrt, 2.23).should be_close(1.49331845230681, TOLERANCE)
end
end
Version data entries
19 entries across 19 versions & 1 rubygems