Chapter 2 examples added

Author: Ryan Bigg

chapter_2/bacon/lib/bacon.rb

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+class Bacon
+  attr_accessor :expired
+  def edible?
+    !expired
+  end
+
+  def expired!
+    self.expired = true
+  end
+end

chapter_2/bacon/spec/bacon_spec.rb

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+require 'bacon'
+describe Bacon do
+  it "is edible" do
+    expect(Bacon.new.edible?).to eq(true)
+  end
+
+  it "expired!" do
+    bacon = Bacon.new
+    bacon.expired!
+    expect(bacon).to_not be_edible
+  end
+end

chapter_2/bacon_test.rb

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+require 'minitest/autorun'
+
+class Bacon
+  def self.saved?
+    false
+  end
+end
+
+class BaconTest < Minitest::Test
+  def test_saved
+    assert Bacon.saved?, "Our bacon was not saved :("
+  end
+end

chapter_2/example_test.rb

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+require 'minitest/autorun'
+class ExampleTest < Minitest::Test
+  def truth
+    assert true
+  end
+end