Commit fc416be

@@ -0,0 +1,41 @@
+require "spec_helper"
+require 'prime'
+
+describe "problem seven" do
+  #By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.
+  #What is the 10 001st prime number?
+
+  class Primes
+    include Enumerable
+
+    def [](index)
+      each_with_index do |n, current|
+        return n if current == (index - 1)
+      end
+    end
+
+    def each(&block)
+      prime.each(&block)
+    end
+
+    private
+
+    def prime
+      Prime
+    end
+  end
+
+  subject { Primes.new }
+
+  it "returns the first 6 primes" do
+    expect(subject.take(6)).to eql([2, 3, 5, 7, 11, 13])
+  end
+
+  it "returns 13" do
+    expect(subject[6]).to eql(13)
+  end
+
+  it "returns the 10_001 prime" do
+    expect(subject[10_001]).to eql(104743)
+  end
+end