* Refactor.

spec/numeric_money_spec.rb

@@ -17,7 +17,7 @@
 	expect(1.1111.to_formatted_s(:money)).to eq "1.11"
       end
 
-      it "also works for integers" do
+      it "when it's an integer" do
 	expect(10.to_formatted_s(:money)).to eq "10.00"
       end
     end

spec/receipt_printer_spec.rb

@@ -1,6 +1,6 @@
 require "open3"
 
-def run input, expected_output
+def run(input, expected_output)
   output, = Open3.capture2e("./receipt_printer", :stdin_data => input)
   expect(output).to eq expected_output
 end
@@ -21,7 +21,7 @@ def run input, expected_output
 Sales Taxes: 1.50
 Total: 29.83
 EOF
-    run(input, expected_output)
+    run input, expected_output
   end
 
   it "input 2" do
@@ -37,7 +37,7 @@ def run input, expected_output
 Sales Taxes: 7.65
 Total: 65.15
 EOF
-    run(input, expected_output)
+    run input, expected_output
   end
 
   it "input 3" do
@@ -57,6 +57,6 @@ def run input, expected_output
 Sales Taxes: 6.70
 Total: 74.68
 EOF
-    run(input, expected_output)
+    run input, expected_output
   end
 end

spec/receipt_spec.rb

@@ -4,18 +4,18 @@
 
 describe ShoppingCart::Receipt do
   [:total, :tax].each do |method|
-    describe "##{method} returns sum of all goods #{method}" do
-      it "for one good" do
-	goods = [ShoppingCart::Item.new(1, "book", 12.49)]
-	expect(ShoppingCart::Receipt.new(goods).send(method)).to eq \
-	  goods.map(&method).inject(:+)
+    describe "##{method} returns sum of all items' ##{method}:" do
+      it "for one item" do
+	items = [ShoppingCart::Item.new(1, "book", 12.49)]
+	expect(ShoppingCart::Receipt.new(items).send(method)).to eq \
+	  items.map(&method).inject(:+)
       end
 
-      it "for multiple goods" do
-	goods = [ShoppingCart::Item.new(1, "book", 12.49),
+      it "for multiple items" do
+	items = [ShoppingCart::Item.new(1, "book", 12.49),
 	  ShoppingCart::Item.new(1, "chocolate bar", 0.85)]
-	expect(ShoppingCart::Receipt.new(goods).send(method)).to eq \
-	  goods.map(&method).inject(:+)
+	expect(ShoppingCart::Receipt.new(items).send(method)).to eq \
+	  items.map(&method).inject(:+)
       end
     end
   end

spec/tax_rates_spec.rb

@@ -6,10 +6,6 @@ def tax_rate_for_good name
 end
 
 describe TaxRates do
-  it "self.tax_rate_for_good works" do
-    expect(TaxRates.tax_rate_for_good("book")).to be_zero
-  end
-
   describe "#tax_rate_for_good returns tax:" do
     context "zero" do
       it "for books" do