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Contents
require 'spec_helper'
describe Numeric do
describe '#percent_of' do
context 'when number is float' do
let(:number) { 120.0 }
it 'converts to percentage of number' do
expect(number.percent_of(240)).to eq(50)
end
it 'converts to percentage of number' do
expect(number.percent_of(60)).to eq(200)
end
it 'do not raise an error when divisor is 0' do
expect(100.0.percent_of(0)).to eq(Float::INFINITY)
end
it 'do not raise an error when divisor is 0.0' do
expect(100.0.percent_of(0.0)).to eq(Float::INFINITY)
end
end
context 'when number is integer' do
it 'converts to percentage of number' do
expect(500.percent_of(50)).to eq(1000)
end
it 'converts to percentage of number' do
expect(0.percent_of(50)).to eq(0)
end
it 'converts to percentage of number' do
expect(10.percent_of(100)).to eq(10)
end
it 'do not raise an error when divisor is 0' do
expect(100.percent_of(0)).to eq(Float::INFINITY)
end
end
context 'when a number is 0' do
context 'when divident is 0' do
it { expect(0.percent_of(100)).to eq(0) }
end
context 'when divisor is 0' do
it { expect(100.percent_of(0)).to eq(Float::INFINITY) }
end
context 'both are 0' do
it { expect(0.percent_of(0)).to eq(Float::INFINITY) }
end
end
context 'when divisor is nil' do
it { expect(100.percent_of(nil)).to eq(Float::INFINITY) }
end
end
end
Version data entries
20 entries across 20 versions & 2 rubygems