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# kevinnio/app.rb

Last active October 4, 2018 17:38
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The OddEven kata

## The OddEven Kata

``````- Write a program that prints numbers within specified range lets say 1 to 100. If number is odd print 'Odd'
instead of the number. If number is even print 'Even' instead of number. Else print number [hint - if number is Prime].

## Steps :

Lets divide into following steps:
- Prints numbers from 1 to 100
- Print "Even" instead of number, if the number is even, means divisible by 2
- Print "Odd" instead of number, if the number is odd, means not divisible by 2 but not divisible by itself too [hint - it should not be Prime]
- Print number, if it does not meet above two conditions, means if number is Prime
``````
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 require './oddeven' oddeven = OddEven.new (1..100).each { |number| puts oddeven.print_number(number) }
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 class OddEven def print_number(number) # Write your code here end def prime_number?(number) # Write your code here end end
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 require './oddeven' RSpec.describe OddEven do subject { described_class.new } describe '#print_number' do context 'when the number is divisible by 2' do it 'returns "EVEN"' do [2, 4, 6, 8, 10].each do |number| expect(subject.print_number(number)).to eq 'EVEN' end end end context 'when the number is not divisible by 2 but not a prime number' do it 'returns "ODD"' do [1, 15, 21, 25, 27].each do |number| expect(subject.print_number(number)).to eq 'ODD' end end end context 'when the number is a prime number' do it 'returns the same number' do [3, 5, 7, 11, 13].each do |number| expect(subject.print_number(number)).to eq number end end end end describe '#prime_number?' do context 'when given a prime number' do it 'returns true' do [2, 3, 5, 7, 11].each do |number| expect(subject.prime_number?(number)).to eq true end end end context 'when given a non-prime number' do it 'returns false' do [1, 4, 6, 9, 10, 12, 14].each do |number| expect(subject.prime_number?(number)).to eq false end end end end end