Livecode - Acronymize with map & Encrypt

acronymize_with_map.rb

def acronymize(sentence)
	return "" if sentence.empty?
	
	sentence.split.map { |word| word[0].upcase}.join
end



puts acronymize("be right back")

# puts acronymize("") == ""

describe "#acronymize" do 

	it "return an empty string when passed an empty string" do 

		actual = acronymize("")
		expected = ""

		expect(actual).to eq(expected)
	end

	it "return String object when passed a string" do
		
		actual = acronymize("Hello World")
		expected = "HW"

		expect(actual.class).to eq(expected.class)
	end

	it "return BRB when passed Be Right Back" do
		
		actual = acronymize("Be Right Back")
		expected = "BRB"

		expect(actual).to eq(expected)
	end



end

encrypt.rb

def encrypt(sentence)
	alphabet = ("A".."Z").to_a
	shift_alphabet = ("X".."Z").to_a + ("A".."W").to_a
	sentence.chars.map do |char|
		# "#{index}. #{char}"
		if char == " "
			char
		else
			char = alphabet[alphabet.index(char) - 3]
			char
		end
	end.join 
end

puts encrypt("THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG") == "QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD"

describe "#encrypt" do 

	it "return QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD an empty string when passed THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG" do 

		actual = encrypt("THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG")
		expected = "QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD"

		expect(actual).to eq(expected)
	end

end