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Contents
require File.dirname(__FILE__)+'/../spec_helper'
require 'gorillib/numeric/clamp'
describe Numeric do
describe '#clamp' do
it 'should return self if neither min nor max are given' do
5.clamp().should == 5
end
it 'should return min if x < min' do
5.clamp(6).should == 6
end
it 'should return self if x >= min' do
5.clamp(4).should == 5
5.clamp(5).should == 5
5.clamp(nil).should == 5
end
it 'should return max if x > max' do
5.clamp(nil, 4).should == 4
5.clamp(4, 4).should == 4
end
it 'should return self if x <= max' do
5.clamp(4, 6).should == 5
5.clamp(5, 5).should == 5
5.clamp(nil, 6).should == 5
5.clamp(nil, 5).should == 5
end
it 'lets me mix floats and ints' do
(5.0).clamp(4, 6).should == 5.0
(5).clamp(4.0, 6.0).should == 5.0
(5.0).clamp(6.0, 7.0).should == 6.0
(5.0).clamp(4, 6).should be_a_kind_of(Float)
(5.0).clamp(6, 6).should be_a_kind_of(Integer)
end
it 'should raise if min > max' do
lambda{ 5.clamp(6, 3) }.should raise_error(ArgumentError)
end
it 'lets me set min == max' do
5.clamp(6, 6).should == 6
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems