Plaid sync tests and multi-currency investment support (#1531)

* Plaid sync tests and multi-currency investment support

* Fix system test

* Cleanup

* Remove data migration

test/support/plaid_test_helper.rb

@@ -0,0 +1,128 @@
+require "ostruct"
+
+module PlaidTestHelper
+  PLAID_TEST_ACCOUNT_ID = "plaid_test_account_id"
+  PLAID_TEST_CASH_SECURITY_ID = "plaid_test_cash_security_id"
+
+  # Special case
+  def create_plaid_cash_security(attributes = {})
+    default_attributes = {
+      close_price: nil,
+      close_price_as_of: nil,
+      cusip: nil,
+      fixed_income: nil,
+      industry: nil,
+      institution_id: nil,
+      institution_security_id: nil,
+      is_cash_equivalent: false, # Plaid sometimes returns false here (bad data), so we should not rely on it
+      isin: nil,
+      iso_currency_code: "USD",
+      market_identifier_code: nil,
+      name: "US Dollar",
+      option_contract: nil,
+      proxy_security_id: nil,
+      sector: nil,
+      security_id: PLAID_TEST_CASH_SECURITY_ID,
+      sedol: nil,
+      ticker_symbol: "CUR:USD",
+      type: "cash",
+      unofficial_currency_code: nil,
+      update_datetime: nil
+    }
+
+    OpenStruct.new(
+      default_attributes.merge(attributes)
+    )
+  end
+
+  def create_plaid_security(attributes = {})
+    default_attributes = {
+      close_price: 606.71,
+      close_price_as_of: Date.current,
+      cusip: nil,
+      fixed_income: nil,
+      industry: "Mutual Funds",
+      institution_id: nil,
+      institution_security_id: nil,
+      is_cash_equivalent: false,
+      isin: nil,
+      iso_currency_code: "USD",
+      market_identifier_code: "XNAS",
+      name: "iShares S&P 500 Index",
+      option_contract: nil,
+      proxy_security_id: nil,
+      sector: "Financial",
+      security_id: "plaid_test_security_id",
+      sedol: "2593025",
+      ticker_symbol: "IVV",
+      type: "etf",
+      unofficial_currency_code: nil,
+      update_datetime: nil
+    }
+
+    OpenStruct.new(
+      default_attributes.merge(attributes)
+    )
+  end
+
+  def create_plaid_cash_holding(attributes = {})
+    default_attributes = {
+      account_id: PLAID_TEST_ACCOUNT_ID,
+      cost_basis: 1000,
+      institution_price: 1,
+      institution_price_as_of: Date.current,
+      iso_currency_code: "USD",
+      quantity: 1000,
+      security_id: PLAID_TEST_CASH_SECURITY_ID,
+      unofficial_currency_code: nil,
+      vested_quantity: nil,
+      vested_value: nil
+    }
+
+    OpenStruct.new(
+      default_attributes.merge(attributes)
+    )
+  end
+
+  def create_plaid_holding(attributes = {})
+    default_attributes = {
+      account_id: PLAID_TEST_ACCOUNT_ID,
+      cost_basis: 2000,
+      institution_price: 200,
+      institution_price_as_of: Date.current,
+      iso_currency_code: "USD",
+      quantity: 10,
+      security_id: "plaid_test_security_id",
+      unofficial_currency_code: nil,
+      vested_quantity: nil,
+      vested_value: nil
+    }
+
+    OpenStruct.new(
+      default_attributes.merge(attributes)
+    )
+  end
+
+  def create_plaid_investment_transaction(attributes = {})
+    default_attributes = {
+      account_id: PLAID_TEST_ACCOUNT_ID,
+      amount: 500,
+      cancel_transaction_id: nil,
+      date: 5.days.ago.to_date,
+      fees: 0,
+      investment_transaction_id: "plaid_test_investment_transaction_id",
+      iso_currency_code: "USD",
+      name: "Buy 100 shares of IVV",
+      price: 606.71,
+      quantity: 100,
+      security_id: "plaid_test_security_id",
+      type: "buy",
+      subtype: "buy",
+      unofficial_currency_code: nil
+    }
+
+    OpenStruct.new(
+      default_attributes.merge(attributes)
+    )
+  end
+end