diff --git a/lib/far_mar.rb b/lib/far_mar.rb
index 7b60d8ee..d4a1be8b 100644
--- a/lib/far_mar.rb
+++ b/lib/far_mar.rb
@@ -2,6 +2,7 @@
 require "time"
 require "rspec"
 require "csv"
+require "date"
 require "./lib/far_mar/market.rb"
 require "./lib/far_mar/vendor.rb"
 require "./lib/far_mar/product.rb"
diff --git a/lib/far_mar/market.rb b/lib/far_mar/market.rb
index 4d3a2c84..208e3864 100644
--- a/lib/far_mar/market.rb
+++ b/lib/far_mar/market.rb
@@ -1,15 +1,157 @@
-CSV.read("./support/markets.csv")
 
 module FarMar
   class Market
-    CSV.read("./support/markets.csv")
-    # @id =
-    # @name =
-    # @address =
-    # @city =
-    # @county =
-    # @state =
-    # @zip =
+
+    attr_reader :id, :name
+
+    def initialize(id, name, address, city, county, state, zip)
+      @id = id
+      @name = name
+      @address = address
+      @city = city
+      @county = county
+      @state = state
+      @zip = zip
+    end
+
+    def self.all
+      @@all_markets ||= []
+
+      if @@all_markets == []
+        CSV.read("./support/markets.csv").each do |line|
+          y = FarMar::Market.new(line[0].to_i, line[1], line[2], line[3], line[4], line[5], line[6])
+          @@all_markets.push(y)
+        end
+      end
+
+      return @@all_markets
+    end
+
+    def self.find(id)
+      FarMar::Market.all.find do |market_instance|
+        market_instance.id == id
+      end
+    end
+
+    def vendors
+      FarMar::Vendor.all.find_all do |vendor_instance|
+        vendor_instance.market_id == @id
+      end
+    end
+
+    def products
+      # empty array to fill with collection of products
+      all_products = []
+
+      # get a collection of all vendors
+      all_vendors = vendors
+
+      # to each vendor instance, run the products method to get a list of products,
+      # then push all of those proudcts into an array
+      all_vendors.each do |vendor_instance|
+        all_products.push(vendor_instance.products)
+      end
+
+      # need to flatten all products so it doesn't return an array of arrays
+      return all_products.flatten!
+    end
+
+    def self.search(search_term)
+      search_term_instances = []
+
+      markets = FarMar::Market.all
+
+      markets.each do |mkt_instance|
+        if mkt_instance.name.match(/#{search_term}/i)
+          search_term_instances.push(mkt_instance)
+        end
+
+        mkt_vendors = mkt_instance.vendors
+
+        mkt_vendors.each do |vendor_instance|
+          if vendor_instance.name.match(/#{search_term}/i)
+            search_term_instances.push(mkt_instance)
+          end
+        end
+      end
+      return search_term_instances
+    end
+
+    def prefered_vendor
+      highest_revenue = 0
+      ven_highest_revenue = nil
+
+      vendors.each do |vendor_instance|
+        ven_revenue = vendor_instance.revenue
+        if ven_revenue > highest_revenue
+          highest_revenue = ven_revenue
+          ven_highest_revenue = vendor_instance
+        end
+      end
+      return ven_highest_revenue
+    end
+
+    def prefered_vendor_on(date)
+      date = DateTime.strptime(date, "%Y-%m-%d").to_date
+      highest_revenue = 0
+      ven_highest_revenue = nil
+
+      vendors.each do |vendor_instance|
+        vendor_instance.sales.each do |sales_instance|
+          sales_on_date = []
+          revenue = 0
+          if sales_instance.purchase_time.to_date == date
+            sales_on_date.push(sales_instance.amount)
+          end
+          if sales_on_date.length > 0
+            sales_on_date.each {|amount| revenue += amount}
+            if revenue > highest_revenue
+              highest_revenue = revenue
+              ven_highest_revenue = vendor_instance
+            end
+          end
+        end
+      end
+      return ven_highest_revenue
+    end
+
+    def worst_vendor
+      lowest_revenue = Float::INFINITY
+      ven_lowest_revenue = nil
+
+      vendors.each do |vendor_instance|
+        ven_revenue = vendor_instance.revenue
+        if ven_revenue < lowest_revenue
+          lowest_revenue = ven_revenue
+          ven_lowest_revenue = vendor_instance
+        end
+      end
+      return ven_lowest_revenue
+    end
+
+    def worst_vendor_on(date)
+      date = Date.parse(date)
+      lowest_revenue = Float::INFINITY
+      ven_lowest_revenue = nil
+
+      vendors.each do |vendor_instance|
+        sales_on_date = []
+        revenue = 0
+        vendor_instance.sales.each do |sales_instance|
+          if sales_instance.purchase_time.to_date == date
+            sales_on_date.push(sales_instance.amount)
+          end
+        end
+        if sales_on_date.length > 0
+          sales_on_date.each {|amount| revenue += amount}
+          if revenue < lowest_revenue
+            lowest_revenue = revenue
+            ven_lowest_revenue = vendor_instance
+          end
+        end
+      end
+      return ven_lowest_revenue
+    end
 
   end
 end
diff --git a/lib/far_mar/product.rb b/lib/far_mar/product.rb
index 433fcdaa..d7a06942 100644
--- a/lib/far_mar/product.rb
+++ b/lib/far_mar/product.rb
@@ -2,5 +2,63 @@
 
 module FarMar
   class Product
+    attr_reader :id, :name, :vendor_id
+
+    def initialize(id, name, vendor_id)
+      @id = id
+      @name = name
+      @vendor_id = vendor_id
+    end
+
+    def self.all
+      @@all_products ||= []
+
+      if @@all_products == []
+        CSV.read("./support/products.csv").each do |line|
+          y = FarMar::Product.new(line[0].to_i, line[1], line[2].to_i)
+          @@all_products.push(y)
+        end
+      end
+
+      return @@all_products
+    end
+
+    def self.find(id)
+      FarMar::Product.all.find do |product_instance|
+        product_instance.id == id
+      end
+    end
+
+    def self.by_vendor(vendor_id)
+      FarMar::Product.all.find_all do |product_instance|
+        product_instance.vendor_id == vendor_id
+      end
+    end
+
+    def vendor
+      FarMar::Vendor.all.find do |vendor_instance|
+        vendor_instance.id == @vendor_id
+      end
+    end
+
+    def sales
+      FarMar::Sale.all.find_all do |sales_instance|
+        sales_instance.product_id == @id
+      end
+    end
+
+    def number_of_sales
+      self.sales.length
+    end
+
+    # def self.most_revenue(n)
+    #   most_revenue = []
+    #
+    #   all.each do |product_instance|
+    #       product_instance
+    #   end
+    #
+    #
+    # end
   end
 end
diff --git a/lib/far_mar/sale.rb b/lib/far_mar/sale.rb
index a824f086..f5e64727 100644
--- a/lib/far_mar/sale.rb
+++ b/lib/far_mar/sale.rb
@@ -1,6 +1,54 @@
-CSV.read("./support/sales.csv")
 
 module FarMar
   class Sale
+    attr_reader :id, :amount, :purchase_time, :vendor_id, :amount, :product_id
+
+    def initialize(id, amount, purchase_time, vendor_id, product_id)
+      @id = id
+      @amount = amount
+      @purchase_time = DateTime.strptime(purchase_time, "%Y-%m-%d %H:%M:%S %z")
+      @vendor_id = vendor_id
+      @product_id = product_id      
+    end
+
+    def self.all
+      @@all_sales ||= []
+
+        if @@all_sales == []
+          CSV.read("./support/sales.csv").each do |line|
+            y = FarMar::Sale.new(line[0].to_i, line[1].to_i, line[2], line[3].to_i, line[4].to_i)
+            @@all_sales.push(y)
+          end
+        end
+
+      return @@all_sales
+    end
+
+    def self.find(id)
+      FarMar::Sale.all.find do |sale_instance|
+        sale_instance.id == id
+      end
+    end
+
+    def self.between(beginning_time, end_time)
+      beginning_time = DateTime.strptime(beginning_time, "%Y-%m-%d %H:%M:%S %z")
+      end_time = DateTime.strptime(end_time, "%Y-%m-%d %H:%M:%S %z")
+
+      FarMar::Sale.all.find_all do |sales_instance|
+        sales_instance.purchase_time >= beginning_time && sales_instance.purchase_time <= end_time
+      end
+    end
+
+    def vendor
+      FarMar::Vendor.all.find do |vendor_instance|
+        vendor_instance.id == @vendor_id
+      end
+    end
+
+    def product
+      FarMar::Product.all.find do |product_instance|
+        product_instance.id == @product_id
+      end
+    end
   end
 end
diff --git a/lib/far_mar/vendor.rb b/lib/far_mar/vendor.rb
index c9c2a7d1..39308f28 100644
--- a/lib/far_mar/vendor.rb
+++ b/lib/far_mar/vendor.rb
@@ -1,6 +1,117 @@
-CSV.read("./support/vendors.csv")
 
 module FarMar
   class Vendor
+    attr_reader :id, :name, :market_id
+
+    def initialize(id, name, num_employees, market_id)
+      @id = id
+      @name = name
+      @num_employees = num_employees
+      @market_id = market_id
+    end
+
+    def self.all
+      @@all_vendors ||= []
+
+      if @@all_vendors == []
+        CSV.read("./support/vendors.csv").each do |line|
+          y = FarMar::Vendor.new(line[0].to_i, line[1], line[2].to_i, line[3].to_i)
+          @@all_vendors.push(y)
+        end
+      end
+
+      return @@all_vendors
+    end
+
+    def self.find(id)
+      FarMar::Vendor.all.find do |vendor_instance|
+        vendor_instance.id == id
+      end
+    end
+
+    def market
+      FarMar::Market.all.find do |market_instance|
+        market_instance.id == @market_id
+      end
+    end
+
+    def products
+      FarMar::Product.all.find_all do |product_instance|
+        product_instance.vendor_id == @id
+      end
+    end
+
+    def sales
+      FarMar::Sale.all.find_all do |sales_instance|
+        sales_instance.vendor_id == @id
+      end
+    end
+
+    def revenue
+      revenue = 0
+
+      sales.each do |sales_instance|
+        revenue += sales_instance.amount
+      end
+
+      return revenue
+    end
+
+    def self.by_market(market_id)
+      FarMar::Vendor.all.find_all do |vendor_instance|
+        vendor_instance.market_id == market_id
+      end
+    end
+
+    def self.most_revenue(n)
+      vendors_by_revenue = []
+
+      all.each do |vendor|
+        vendors_by_revenue.push(vendor)
+      end
+
+      vendors_by_revenue = vendors_by_revenue.sort_by { |vendor| vendor.revenue }
+
+      return vendors_by_revenue[0...n]
+    end
+
+    def self.most_items(n)
+      vendors_by_items = self.all
+
+      vendors_by_items = vendors_by_items.sort_by { |vendor| vendor.products.length }
+
+      return vendors_by_items[0...n]
+
+    end
+
+    def self.revenue(date)
+      date = DateTime.strptime(date, "%Y-%m-%d").to_date
+      revenue = 0
+
+      self.all.each do |vendor_instance|
+        vendor_instance.sales.each do |sales_instance|
+          if sales_instance.purchase_time.to_date == date
+            revenue += sales_instance.amount
+          end
+        end
+      end
+
+      return revenue
+    end
+
+    def revenue_on(date)
+      date = DateTime.strptime(date, "%Y-%m-%d").to_date
+      revenue = 0
+
+      sales.each do |sales_instance|
+        if sales_instance.purchase_time.to_date == date
+          revenue += sales_instance.amount
+        end
+      end
+
+      return revenue
+    end
+
+    
   end
 end
diff --git a/spec/far_mar/market_spec.rb b/spec/far_mar/market_spec.rb
index 9e8744b2..d1fc258d 100644
--- a/spec/far_mar/market_spec.rb
+++ b/spec/far_mar/market_spec.rb
@@ -1,12 +1,111 @@
 require "./spec/spec_helper"
 
 describe FarMar::Market do
+  before :each do
+    @market1 = FarMar::Market.new(100, "name", "address", "city", "county", "state", "zip")
+    @market2 = FarMar::Market.new(400, "name", "address", "city", "county", "state", "zip")
+  end
   describe "#initialize" do
     it "creates new instance of market" do
-      @market1 = FarMar::Market.new
-      @market2 = FarMar::Market.new
       expect(@market1).to be_instance_of FarMar::Market
       expect(@market2).to be_instance_of FarMar::Market
     end
+    it "allows access to id of instance" do
+      expect(@market1.id).to eq 100
+    end
+  end
+  describe "#self.all" do
+    it "returns an array" do
+      expect(FarMar::Market.all).to be_an Array
+    end
+    it "returns 500 items in array" do
+      expect(FarMar::Market.all.length).to eq 500
+    end
+  end
+  describe "#self.find(id)" do
+    it "returns an instance of FarMar::Market" do
+      expect(FarMar::Market.find(1)).to be_instance_of FarMar::Market
+    end
+    it "returns correct instance of FarMar::Market" do
+      expect(FarMar::Market.find(1).name).to eq "People's Co-op Farmers Market"
+      expect(FarMar::Market.find(2).name).to eq "Silverdale Farmers Market"
+    end
+  end
+  describe "#vendors" do
+    it "returns an array" do
+      expect(@market1.vendors).to be_an Array
+    end
+    it "returns array of instances of FarMar::Vendor" do
+      expect(@market1.vendors[0]).to be_instance_of FarMar::Vendor
+      expect(@market1.vendors[-1]).to be_instance_of FarMar::Vendor
+    end
+    it "returns correct array length" do
+      expect(@market1.vendors.length).to eq 6
+      expect(@market2.vendors.length).to eq 10
+    end
+    it "returns correct first instance of FarMar::Vendor" do
+      expect(@market1.vendors[0].name).to eq "Schiller-Ledner"
+      expect(@market2.vendors[0].name).to eq "McLaughlin-Metz"
+    end
+  end
+  describe "#products" do
+    it "returns an array" do
+      expect(@market1.products).to be_an Array
+    end
+    it "returns an array of FarMar::Product instances" do
+      expect(@market1.products[0]).to be_instance_of FarMar::Product
+    end
+    it "returns correct first instance of FarMar::Vendor" do
+      expect(@market1.products[0].id).to eq 1594
+      expect(@market2.products[0].id).to eq 6370
+    end
+  end
+  describe ".self.search(search_term)" do
+    it "returns an array" do
+      expect(FarMar::Market.search("School")).to be_an Array
+    end
+    it "returns an array of FarMar::Market instances" do
+      expect(FarMar::Market.search("School")[0]).to be_instance_of FarMar::Market
+    end
+    it "returns correct num of results in array" do
+      expect(FarMar::Market.search("School").length).to eq 3
+      expect(FarMar::Market.search("green").length).to eq 54
+    end
+  end
+  describe "#prefered_vendor" do
+    it "returns an instance of FarMar::Vendor" do
+      expect(@market1.prefered_vendor).to be_instance_of FarMar::Vendor
+    end
+    it "returns correct instance of FarMar::Vendor" do
+      @market3 = FarMar::Market.new(2, "name", "address", "city", "county", "state", "zip")
+      expect(@market3.prefered_vendor.id).to eq 8
+    end
+  end
+  describe "#prefered_vendor_on(date)" do
+    it "returns an instance of FarMar::Vendor" do
+      expect(@market1.prefered_vendor_on("2013-11-10")).to be_instance_of FarMar::Vendor
+    end
+    it "returns correct instance of FarMar::Vendor" do
+      @market3 = FarMar::Market.new(2, "name", "address", "city", "county", "state", "zip")
+      expect(@market3.prefered_vendor_on("2013-11-10").id).to eq 7
+    end
+  end
+  describe "#worst_vendor" do
+    it "returns an instance of FarMar::Vendor" do
+      expect(@market1.worst_vendor).to be_instance_of FarMar::Vendor
+    end
+    it "returns correct instance of FarMar::Vendor" do
+      @market3 = FarMar::Market.new(2, "name", "address", "city", "county", "state", "zip")
+      expect(@market3.worst_vendor.id).to eq 9
+    end
+    describe "#worst_vendor_on(date)" do
+      it "returns an instance of FarMar::Vendor" do
+        expect(@market1.worst_vendor_on("2013-11-10")).to be_instance_of FarMar::Vendor
+      end
+      it "returns correct instance of FarMar::Vendor" do
+        @market3 = FarMar::Market.new(2, "name", "address", "city", "county", "state", "zip")
+        expect(@market3.worst_vendor_on("2013-11-07").id).to eq 9
+      end
+    end
   end
 end
diff --git a/spec/far_mar/product_spec.rb b/spec/far_mar/product_spec.rb
index 67f40228..4ab2935d 100644
--- a/spec/far_mar/product_spec.rb
+++ b/spec/far_mar/product_spec.rb
@@ -1,12 +1,94 @@
 require "./spec/spec_helper"
 
 describe FarMar::Product do
+  before :each do
+    @product1 = FarMar::Product.new(5, "name", 100)
+    @product2 = FarMar::Product.new(6, "name", 400)
+  end
   describe "#initialize" do
     it "creates new instance of product" do
-      @product1 = FarMar::Product.new
-      @product2 = FarMar::Product.new
       expect(@product1).to be_instance_of FarMar::Product
       expect(@product2).to be_instance_of FarMar::Product
     end
   end
+  describe "#self.all" do
+    it "returns an array" do
+      expect(FarMar::Product.all).to be_an Array
+    end
+    it "returns 8193 items in array" do
+      expect(FarMar::Product.all.length).to eq 8193
+    end
+  end
+  describe "#self.find(id)" do
+    it "returns an instance of FarMar::Product" do
+      expect(FarMar::Product.find(1)).to be_instance_of FarMar::Product
+    end
+    it "returns correct instance of FarMar::Vendor" do
+      expect(FarMar::Product.find(1).name).to eq "Dry Beets"
+      expect(FarMar::Product.find(2).name).to eq "Fierce Greens"
+    end
+  end
+  describe "#vendor" do
+    it "returns an instance of FarMar::Vendor" do
+      expect(@product1.vendor).to be_instance_of FarMar::Vendor
+    end
+    it "returns correct instance of FarMar::Vendor" do
+      expect(@product1.vendor.name).to eq "Bernier, Moen and Torp"
+      expect(@product2.vendor.name).to eq "Howe LLC"
+    end
+  end
+  describe "#sales" do
+    it "returns an instance of FarMar::Sale" do
+      expect(@product1.sales).to be_an Array
+    end
+    it "returns array of instances of FarMar::Sale" do
+      expect(@product1.sales[0]).to be_instance_of FarMar::Sale
+      expect(@product1.sales[-1]).to be_instance_of FarMar::Sale
+    end
+    it "returns correct array length" do
+      expect(@product1.sales.length).to eq 2
+      expect(@product2.sales.length).to eq 1
+    end
+    it "returns correct first instance of FarMar::Vendor" do
+      expect(@product1.sales[0].id).to eq 18
+      expect(@product2.sales[0].id).to eq 19
+    end
+  end
+  describe "#number_of_sales" do
+    it "returns an integer" do
+      expect(@product1.number_of_sales).to be_a Fixnum
+    end
+    it "returns correct num times a product has been sold" do
+      expect(@product1.number_of_sales).to eq 2
+      expect(@product2.number_of_sales).to eq 1
+    end
+  end
+  describe "#self.by_vendor(vendor_id)" do
+    it "returns an array" do
+      expect(FarMar::Product.by_vendor(5)).to be_an Array
+      expect(FarMar::Product.by_vendor(100)).to be_an Array
+    end
+    it "returns correct length of array" do
+      expect(FarMar::Product.by_vendor(5).length).to eq 3
+      expect(FarMar::Product.by_vendor(100).length).to eq 5
+    end
+    it "returns correct first item in array" do
+      expect(FarMar::Product.by_vendor(5)[0].id).to eq 8
+      expect(FarMar::Product.by_vendor(100)[0].id).to eq 307
+    end
+  end
+  # describe ".self.most_revenue(n)" do
+  #   it "returns an array" do
+  #     expect(FarMar::Product.most_revenue(5)).to be_an Array
+  #   end
+  #   it "returns instances of Product class" do
+  #     expect(FarMar::Product.most_revenue(5)[0]).to be_instance_of FarMar::Product
+  #   end
+  #   it "returns correct length of array" do
+  #     expect(FarMar::Product.most_revenue(5).length).to eq 5
+  #   end
+  #   # it "returns correct first item in array" do
+  #   #   expect(FarMar::Product.by_vendor(5)[0].id).to eq 7848
+  #   # end
+  # end
 end
diff --git a/spec/far_mar/sale_spec.rb b/spec/far_mar/sale_spec.rb
index 0e75b5aa..f7a335ef 100644
--- a/spec/far_mar/sale_spec.rb
+++ b/spec/far_mar/sale_spec.rb
@@ -1,12 +1,60 @@
 require "./spec/spec_helper"
 
 describe FarMar::Sale do
+  before :each do
+    @sale1 = FarMar::Sale.new(5,4440,"2013-11-10 05:19:05 -0800",1,1)
+    @sale2 = FarMar::Sale.new(100,4573,"2013-11-08 15:18:32 -0800",19,56)
+  end
   describe "#initialize" do
     it "creates new instance of sale" do
-      @sale1 = FarMar::Sale.new
-      @sale2 = FarMar::Sale.new
       expect(@sale1).to be_instance_of FarMar::Sale
       expect(@sale2).to be_instance_of FarMar::Sale
     end
   end
+  describe ".self.all" do
+    it "returns an array" do
+      expect(FarMar::Sale.all).to be_an Array
+    end
+    it "returns 12798 items in array" do
+      expect(FarMar::Sale.all.length).to eq 12798
+    end
+  end
+  describe ".self.find(id)" do
+    it "returns an instance of FarMar::Sale" do
+      expect(FarMar::Sale.find(1)).to be_instance_of FarMar::Sale
+    end
+    it "returns correct instance of FarMar::Sale" do
+      expect(FarMar::Sale.find(1).amount).to eq 9290
+      expect(FarMar::Sale.find(2).amount).to eq 2262
+    end
+  end
+  describe "#vendor" do
+    it "returns an instance of FarMar::Vendor" do
+      expect(@sale1.vendor).to be_instance_of FarMar::Vendor
+    end
+    it "returns correct instance of FarMar::Vendor" do
+      expect(@sale1.vendor.name).to eq "Feil-Farrell"
+      expect(@sale2.vendor.name).to eq "Labadie-Tremblay"
+    end
+  end
+  describe "#product" do
+    it "returns an instance of FarMar::Product" do
+      expect(@sale1.product).to be_instance_of FarMar::Product
+    end
+    it "returns correct instance of FarMar::Product" do
+      expect(@sale1.product.name).to eq "Dry Beets"
+      expect(@sale2.product.name).to eq "Nom nom Beef"
+    end
+  end
+  describe ".self.between(beginning_time, end_time)" do
+    it "returns an array" do
+      expect(FarMar::Sale.between("2013-11-10 05:19:05 -0800","2013-11-08 15:18:32 -0800")).to be_an Array
+    end
+    it "returns array of correct length" do
+      expect(FarMar::Sale.between("2013-11-10 02:44:56 -0800","2013-11-10 02:44:56 -0800").length).to eq 1
+    end
+    it "returns correct first item in array" do
+      expect(FarMar::Sale.between("2013-11-10 02:44:56 -0800","2013-11-10 02:44:56 -0800")[0].id).to eq 2
+    end
+  end
 end
diff --git a/spec/far_mar/vendor_spec.rb b/spec/far_mar/vendor_spec.rb
index bf12a6c7..94951101 100644
--- a/spec/far_mar/vendor_spec.rb
+++ b/spec/far_mar/vendor_spec.rb
@@ -1,12 +1,127 @@
 require "./spec/spec_helper"
 
 describe FarMar::Vendor do
+  before :each do
+    @vendor1 = FarMar::Vendor.new(5, "name", 7, 8)
+    @vendor2 = FarMar::Vendor.new(6, "name", 9, 10)
+  end
   describe "#initialize" do
     it "creates new instance of vendor" do
-      @vendor1 = FarMar::Vendor.new
-      @vendor2 = FarMar::Vendor.new
       expect(@vendor1).to be_instance_of FarMar::Vendor
       expect(@vendor2).to be_instance_of FarMar::Vendor
     end
   end
+
+  describe "#self.all" do
+    it "returns an array" do
+      expect(FarMar::Vendor.all).to be_an Array
+    end
+    it "returns 2690 items in array" do
+      expect(FarMar::Vendor.all.length).to eq 2690
+    end
+  end
+  describe ".self.find(id)" do
+    it "returns an instance of FarMar::Vendor" do
+      expect(FarMar::Vendor.find(1)).to be_instance_of FarMar::Vendor
+      expect(FarMar::Vendor.find(2)).to be_instance_of FarMar::Vendor
+    end
+    it "returns correct instance of FarMar::Market" do
+      expect(FarMar::Vendor.find(1).name).to eq "Feil-Farrell"
+      expect(FarMar::Vendor.find(2).name).to eq "Hamill, Kilback and Pfeffer"
+    end
+  end
+  describe "#market" do
+    it "returns instance of Market class" do
+      expect(@vendor1.market).to be_instance_of FarMar::Market
+    end
+    it "returns correct instance of Market class" do
+      expect(@vendor1.market.name).to eq "Charlestown Farmers Market"
+      expect(@vendor2.market.name).to eq "Saratoga Farmers' Market"
+    end
+  end
+  describe "#products" do
+    it "returns an array" do
+      expect(@vendor1.products).to be_an Array
+    end
+    it "returns array of correct length" do
+      expect(@vendor1.products.length).to eq 3
+      expect(@vendor2.products.length).to eq 3
+    end
+    it "returns correct first item in array" do
+      expect(@vendor1.products[0].name).to eq "Shaky Honey"
+      expect(@vendor2.products[0].name).to eq "Gigantic Bread"
+    end
+  end
+  describe "#sales" do
+    it "returns an array" do
+      expect(@vendor1.sales).to be_an Array
+    end
+    it "returns array of correct length" do
+      expect(@vendor1.sales.length).to eq 9
+      expect(@vendor2.sales.length).to eq 1
+    end
+  end
+  describe "#revenue" do
+    it "returns an integer" do
+      expect(@vendor1.revenue).to be_a Fixnum
+    end
+    it "returns correct total sales" do
+      expect(@vendor1.revenue).to eq 61749
+    end
+  end
+  describe ".self.by_market" do
+    it "returns an array" do
+      expect(FarMar::Vendor.by_market(100)).to be_an Array
+    end
+    it "returns array composed of instances of vendors class" do
+      expect(FarMar::Vendor.by_market(100)[0]).to be_instance_of FarMar::Vendor
+      expect(FarMar::Vendor.by_market(100)[-1]).to be_instance_of FarMar::Vendor
+    end
+    it "returns correct number of vendors" do
+      expect(FarMar::Vendor.by_market(100).length).to eq 6
+      expect(FarMar::Vendor.by_market(400).length).to eq 10
+    end
+  end
+  describe ".self.most_revenue(n)" do
+    it "returns an array" do
+      expect(FarMar::Vendor.most_revenue(5)).to be_an Array
+    end
+    it "returns an array of instances of FarMar::Vendor" do
+      expect(FarMar::Vendor.most_revenue(5)[0]).to be_instance_of FarMar::Vendor
+    end
+    it "returns array of correct length" do
+      expect(FarMar::Vendor.most_revenue(5).length).to eq 5
+    end
+    it "returns correct first instance in array, with highest revenue" do
+      expect(FarMar::Vendor.most_revenue(5)[0].revenue).to be >= FarMar::Vendor.most_revenue(5)[1].revenue
+    end
+  end
+  describe ".self.most_items(n)" do
+    it "returns an array of instances of FarMar::Vendor" do
+      expect(FarMar::Vendor.most_items(5)[0]).to be_instance_of FarMar::Vendor
+    end
+    it "returns array of correct length" do
+      expect(FarMar::Vendor.most_items(5).length).to eq 5
+    end
+    it "returns correct first instance in array, with highest revenue" do
+      expect(FarMar::Vendor.most_items(5)[0].products.length).to be >= FarMar::Vendor.most_items(5)[1].products.length
+    end
+  end
+  describe "self.revenue(date)" do
+    it "returns a Fixnum" do
+      expect(FarMar::Vendor.revenue("2013-11-07")).to be_a Fixnum
+    end
+    it "returns correct revenue for a date" do
+      expect(FarMar::Vendor.revenue("2013-11-07")).to eq 9060582
+    end
+  end
+  describe "#revenue_on(date)" do
+    it "returns a Fixnum" do
+      expect(@vendor1.revenue_on("2013-11-07")).to be_a Fixnum
+    end
+    it "Returns correct revenue amount" do
+      @vendor3 = FarMar::Vendor.new(7, "name", 9, 10)
+      expect(@vendor3.revenue_on("2013-11-07")).to eq 12377
+    end
+  end
 end