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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.hypot" do
it "returns a float" do
Math.hypot(3, 4).class.should == Float
end
it "returns the length of the hypotenuse of a right triangle with legs given by the arguments" do
Math.hypot(0, 0).should be_close(0.0, TOLERANCE)
Math.hypot(2, 10).should be_close( 10.1980390271856, TOLERANCE)
Math.hypot(5000, 5000).should be_close(7071.06781186548, TOLERANCE)
Math.hypot(0.0001, 0.0002).should be_close(0.000223606797749979, TOLERANCE)
Math.hypot(-2, -10).should be_close(10.1980390271856, TOLERANCE)
Math.hypot(2, 10).should be_close(10.1980390271856, TOLERANCE)
end
it "raises an ArgumentError if the argument cannot be coerced with Float()" do
lambda { Math.hypot("test", "this") }.should raise_error(ArgumentError)
end
it "raises a ArgumentError if the argument is nil" do
lambda { Math.hypot(nil) }.should raise_error(ArgumentError)
end
it "accepts any argument that can be coerced with Float()" do
Math.hypot(MathSpecs::Float.new, MathSpecs::Float.new).should be_close(1.4142135623731, TOLERANCE)
end
end
describe "Math#hypot" do
it "is accessible as a private instance method" do
IncludesMath.new.send(:hypot, 2, 3.1415).should be_close(3.72411361937307, TOLERANCE)
end
end
Version data entries
19 entries across 19 versions & 1 rubygems