Add rspec matchers for charging amounts to cards

lib/fake_stripe.rb

@@ -2,6 +2,11 @@
 require 'fake_stripe/initializers/webmock'
 require 'fake_stripe/stub_app'
 require 'fake_stripe/stub_stripe_js'
+require 'fake_stripe/exceptions'
+
+if defined?(RSpec)
+  require 'fake_stripe/rspec'
+end
 
 module FakeStripe
   extend Configuration
@@ -12,20 +17,19 @@ module FakeStripe
   CARD_OBJECT_TYPE = "card"
   BANK_ACCOUNT_OBJECT_TYPE = "bank_account"
 
-
   STRIPE_OBJECTS.each do |object|
-    define_singleton_method "#{object}_count" do
-      instance_variable_get("@#{object}_count")
+    define_singleton_method "#{object}_calls" do
+      instance_variable_get("@#{object}_calls")
     end
 
-    define_singleton_method "#{object}_count=" do |count|
-      instance_variable_set("@#{object}_count", count)
+    define_singleton_method "#{object}_calls=" do |calls|
+      instance_variable_set("@#{object}_calls", calls)
     end
   end
 
   def self.reset
     STRIPE_OBJECTS.each do |object|
-      instance_variable_set("@#{object}_count", 0)
+      instance_variable_set("@#{object}_calls", [])
     end
   end
 

lib/fake_stripe/exceptions.rb

@@ -0,0 +1,4 @@
+module FakeStripe
+  class InvalidCardToken < StandardError
+  end
+end

lib/fake_stripe/rspec.rb

@@ -0,0 +1 @@
+require 'fake_stripe/rspec/matchers'

lib/fake_stripe/rspec/matchers.rb

@@ -0,0 +1 @@
+require 'fake_stripe/rspec/matchers/have_charged'

lib/fake_stripe/rspec/matchers/have_charged.rb

@@ -0,0 +1,42 @@
+RSpec::Matchers.define :have_charged do |amount|
+  @card_token = :ignore_card_token
+
+  chain :to_card do |card_token|
+    @card_token = card_token
+
+    if invalid_card_token?(@card_token)
+      raise FakeStripe::InvalidCardToken
+    end
+  end
+
+  match do |fake_stripe|
+    matching_charges(fake_stripe, amount, @card_token).any?
+  end
+
+  def matching_charges(fake_stripe, amount, card_token)
+    matching_amounts = fake_stripe.charge_calls
+      .select(&matches_amount(amount))
+
+    if card_token
+      matching_amounts.select(&matches_card_token(card_token))
+    else
+      matching_amounts
+    end
+  end
+
+  def matches_amount(amount)
+    proc do |charge|
+      charge[:amount] == amount
+    end
+  end
+
+  def matches_card_token(card_token)
+    proc do |charge|
+      card_token == :ignore_card_token || charge[:card][:id] == card_token
+    end
+  end
+
+  def invalid_card_token?(card_token)
+    card_token.nil? || card_token == ''
+  end
+end

lib/fake_stripe/stub_app.rb

@@ -8,11 +8,13 @@ class StubApp < Sinatra::Base
       if params['amount'] && params['amount'].to_i <= 0
         json_response 400, fixture('invalid_positive_integer')
       else
-        FakeStripe.charge_count += 1
-        json_response 201, fixture('create_charge')
+        charge = successful_charge
+        FakeStripe.charge_calls << charge
+        json_response 201, charge.to_json
       end
     end
 
+
     get '/v1/charges/:charge_id' do
       json_response 200, fixture('retrieve_charge')
     end
@@ -22,12 +24,12 @@ class StubApp < Sinatra::Base
     end
 
     post '/v1/refunds' do
-      FakeStripe.refund_count += 1
+      FakeStripe.refund_calls << {}
       json_response 200, fixture('refund_charge')
     end
 
     post '/v1/charges/:charge_id/refund' do
-      FakeStripe.refund_count += 1
+      FakeStripe.refund_calls << {}
       json_response 200, fixture('refund_charge')
     end
 
@@ -41,7 +43,7 @@ class StubApp < Sinatra::Base
 
     # Customers
     post '/v1/customers' do
-      FakeStripe.customer_count += 1
+      FakeStripe.customer_calls << {}
       json_response 200, fixture('create_customer')
     end
 
@@ -63,7 +65,7 @@ class StubApp < Sinatra::Base
 
     # Cards
     post '/v1/customers/:customer_id/sources' do
-      FakeStripe.card_count += 1
+      FakeStripe.card_calls << {}
       json_response 200, fixture('create_card')
     end
 
@@ -89,7 +91,7 @@ class StubApp < Sinatra::Base
       '/v1/customers/:customer_id/subscriptions',
     ].each do |path|
       post path do
-        FakeStripe.subscription_count += 1
+        FakeStripe.subscription_calls << {}
         json_response 200, fixture('create_subscription')
       end
     end
@@ -144,7 +146,7 @@ class StubApp < Sinatra::Base
 
     # Plans
     post '/v1/plans' do
-      FakeStripe.plan_count += 1
+      FakeStripe.plan_calls << {}
       json_response 200, fixture('create_plan')
     end
 
@@ -166,7 +168,7 @@ class StubApp < Sinatra::Base
 
     # Coupons
     post '/v1/coupons' do
-      FakeStripe.coupon_count += 1
+      FakeStripe.coupon_calls << {}
       json_response 200, fixture('create_coupon')
     end
 
@@ -201,7 +203,7 @@ class StubApp < Sinatra::Base
     end
 
     post '/v1/invoices' do
-      FakeStripe.invoice_count += 1
+      FakeStripe.invoice_calls << {}
       json_response 200, fixture('create_invoice')
     end
 
@@ -223,7 +225,7 @@ class StubApp < Sinatra::Base
 
     # Invoice Items
     post '/v1/invoiceitems' do
-      FakeStripe.invoiceitem_count += 1
+      FakeStripe.invoiceitem_calls << {}
       json_response 200, fixture('create_invoiceitem')
     end
 
@@ -254,7 +256,7 @@ class StubApp < Sinatra::Base
 
     # Transfers
     post '/v1/transfers' do
-      FakeStripe.transfer_count += 1
+      FakeStripe.transfer_calls << {}
       json_response 200, fixture('create_transfer')
     end
 
@@ -276,7 +278,7 @@ class StubApp < Sinatra::Base
 
     # Recipients
     post '/v1/recipients' do
-      FakeStripe.recipient_count += 1
+      FakeStripe.recipient_calls << {}
       json_response 200, fixture('create_recipient')
     end
 
@@ -350,7 +352,7 @@ class StubApp < Sinatra::Base
 
     # Tokens
     post '/v1/tokens' do
-      FakeStripe.token_count += 1
+      FakeStripe.token_calls << {}
       json_response 200, fixture(token_fixture_name)
     end
 
@@ -378,5 +380,101 @@ def token_fixture_name
         "create_card_token"
       end
     end
+
+    def successful_charge
+      {
+        amount: params[:amount].to_i,
+        card: {
+          id: params[:card],
+          address_city: nil,
+          address_country: nil,
+          address_line1: nil,
+          address_line1_check: nil,
+          address_line2: nil,
+          address_state: nil,
+          address_zip: nil,
+          address_zip_check: nil,
+          country: "US",
+          cvc_check: "pass",
+          exp_month: 11,
+          exp_year: 2014,
+          fingerprint: "qhjxpr7DiCdFYTlH",
+          last4: "4242",
+          name: "john doe",
+          object: "card",
+          type: "Visa"
+        },
+        amount_refunded: 0,
+        application_fee: nil,
+        balance_transaction: "txn_17bBUd2eZvKYlo2CAv3mOn7F",
+        captured: true,
+        created: 11456245794,
+        currency: "usd",
+        customer: "cus_7xeYRmuGuwvZK1",
+        description: "Charge for VirtuMedix consultation for Guy Henggeler",
+        destination: nil,
+        dispute: nil,
+        failure_code: nil,
+        failure_message: nil,
+        fee: 59,
+        fee_details: [
+          {
+            amount: 59,
+            application: nil,
+            currency: "usd",
+            description: "Stripe processing fees",
+            type: "stripe_fee"
+          }
+        ],
+        fraud_details: {
+        },
+
+        id: "ch_17hjFm2eZvKYlo2Cf6ceKOqV",
+        invoice: nil,
+        livemode: false,
+        metadata: {
+        },
+        object: "charge",
+        order: nil,
+        paid: true,
+        refunded: false,
+        refunds: {
+          object: "list",
+          data: [
+          ],
+          has_more: false,
+          total_count: 0,
+          url: "/v1/charges/ch_17hjFm2eZvKYlo2Cf6ceKOqV/refunds"
+        },
+        shipping: nil,
+        source: {
+          id: "card_17hjFk2eZvKYlo2CuvsYuAE1",
+          object: "card",
+          address_city: nil,
+          address_country: nil,
+          address_line1: nil,
+          address_line1_check: nil,
+          address_line2: nil,
+          address_state: nil,
+          address_zip: nil,
+          address_zip_check: nil,
+          brand: "Visa",
+          country: "US",
+          customer: "cus_7xeYRmuGuwvZK1",
+          cvc_check: "pass",
+          dynamic_last4: nil,
+          exp_month: 2,
+          exp_year: 2017,
+          funding: "credit",
+          last4: "4242",
+          metadata: {
+          },
+          name: nil,
+          tokenization_method: nil
+        },
+        statement_descriptor: nil,
+        status: "succeeded"
+      }
+    end
   end
 end