Project Euler Problem 1

Project Euler Problem 1

CODE
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def value_returned(number)
	 if is_divisible_by?(number)
	 	return number
	 else
	 	return 0
	 end
end

def is_divisible_by?(number)
	if number > 15 || number == 15
		return true if number %15 == 0
	end
	return true if number %5 == 0
	return true if number %3 == 0
end

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RSPEC TESTED ALONG WITH PROBLEM
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require_relative 'project_euler_p1.rb'

describe 'Problem1' do 
	context "knows number is divisible by" do
		it '3' do
			expect(is_divisible_by?(3)).to be_truthy
		end

		it '5' do 
			expect(is_divisible_by?(5)).to be_truthy
		end

		it '15' do
			expect(is_divisible_by?(15)).to be_truthy
		end			
	end

	context "knows number is not divisible by" do
		it '3' do
			expect(is_divisible_by?(1)).to be_falsey
		end

		it '5' do
			expect(is_divisible_by?(1)).to be_falsey
		end

		it '15' do
			expect(is_divisible_by?(1)).to be_falsey
		end		
	end

	context "returns value if divisible true" do
		it '3' do
			expect(value_returned(9)).to be_truthy
		end
		it '5' do
			expect(value_returned(10)).to be_truthy
		end		
		it '15' do
			expect(value_returned(15)).to be_truthy
		end
	end

	context "returns nil of not divisible try" do
		it '3' do
			expect(value_returned(1)).to be_equal(0)
		end
		it '5' do
			expect(value_returned(1)).to be_equal(0)
		end
		it '15' do
			expect(value_returned(1)).to be_equal(0)
		end
	end

end

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IRB COMMANDS
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2.0.0-p451 :001 > require './project_euler_p1'
 => true
2.0.0-p451 :002 > array = Array.new
 => []
2.0.0-p451 :003 > 1.upto(999){|number| array << value_returned(number) }
 => 1
2.0.0-p451 :004 > array.inject{|sum,x| sum + x }
 => 233168