Add Local Development Demo Data (#502)

* Clean up seeds, add development demo data

* Handle liability account display and sync

* Fix tests

test/fixtures/accounts.yml

@@ -21,3 +21,9 @@ savings_with_valuation_overrides:
   family: dylan_family
   name: Savings account with valuation overrides
   balance: 20000
+
+# Liability account
+credit_card:
+  family: dylan_family
+  name: Credit Card
+  balance: 1000

test/fixtures/transactions.yml

@@ -53,3 +53,28 @@ savings_four:
   date: <%= 29.days.ago.to_date %>
   amount: -500
   account: savings_with_valuation_overrides
+
+# Credit card account transactions
+credit_card_one:
+  name: Starbucks
+  date: <%= 5.days.ago.to_date %>
+  amount: 10
+  account: credit_card
+
+credit_card_two:
+  name: Chipotle
+  date: <%= 12.days.ago.to_date %>
+  amount: 30
+  account: credit_card
+
+credit_card_three:
+  name: Amazon
+  date: <%= 15.days.ago.to_date %>
+  amount: 20
+  account: credit_card
+
+credit_card_four:
+  name: CC Payment
+  date: <%= 29.days.ago.to_date %>
+  amount: -100
+  account: credit_card

test/models/account/balance_calculator_test.rb

@@ -47,4 +47,19 @@ class Account::BalanceCalculatorTest < ActiveSupport::TestCase
 
         assert_equal expected_balances, daily_balances.map { |b| b[:balance] }
     end
+
+    test "syncs liability account" do
+        account = accounts(:credit_card)
+        account.accountable = account_credits(:one)
+        daily_balances = Account::BalanceCalculator.new(account).daily_balances
+
+        expected_balances = [
+            1040, 940, 940, 940, 940, 940, 940, 940, 940, 940,
+            940, 940, 940, 940, 940, 960, 960, 960, 990, 990,
+            990, 990, 990, 990, 990, 1000, 1000, 1000, 1000, 1000,
+            1000
+        ].map(&:to_d)
+
+        assert_equal expected_balances, daily_balances.map { |b| b[:balance] }
+    end
 end