Return Function Tests

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Students writes a function named add_five() that takes an integer as a parameter and returns 5 plus the parameter value. 
Grading Tests:
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require 'rspec'
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require 'stringio'
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require '/usercode/exampleb'
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​
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RSpec.describe "CodingRoomsUnitTests" do
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​
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    describe "Run add_five() with parameter 5" do
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        it "expect the function to return 10" do
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            expect(add_five(5)).to eq(10)
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        end
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    end
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​
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    describe "Run add_five() with parameter 0" do
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        it "expect the function to return 5" do
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            expect(add_five(0)).to eq(5)
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        end
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    end
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​
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    describe "Run add_five() with parameter 6" do
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        it "expect the function to return 11" do
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            expect(add_five(6)).to eq(11)
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        end
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    end
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​
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end
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Sample Solution:
example.rb
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def add_five(number)
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    number += 5
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    return number
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end
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​
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puts add_five(5)rub
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