Add loan and credit card views (#1268)

* Add loan and credit card views

* Lint fix

* Clean up overview card markup

* Lint fix

* Test fix

test/controllers/loans_controller_test.rb

@@ -0,0 +1,75 @@
+require "test_helper"
+
+class LoansControllerTest < ActionDispatch::IntegrationTest
+  setup do
+    sign_in @user = users(:family_admin)
+    @account = accounts(:loan)
+  end
+
+  test "creates loan" do
+    assert_difference -> { Account.count } => 1,
+      -> { Loan.count } => 1,
+      -> { Account::Valuation.count } => 2,
+      -> { Account::Entry.count } => 2 do
+      post loans_path, params: {
+        account: {
+          name: "New Loan",
+          balance: 50000,
+          currency: "USD",
+          accountable_type: "Loan",
+          start_date: 1.month.ago.to_date,
+          start_balance: 50000,
+          accountable_attributes: {
+            interest_rate: 5.5,
+            term_months: 60,
+            rate_type: "fixed"
+          }
+        }
+      }
+    end
+
+    created_account = Account.order(:created_at).last
+
+    assert_equal "New Loan", created_account.name
+    assert_equal 50000, created_account.balance
+    assert_equal "USD", created_account.currency
+    assert_equal 5.5, created_account.loan.interest_rate
+    assert_equal 60, created_account.loan.term_months
+    assert_equal "fixed", created_account.loan.rate_type
+
+    assert_redirected_to account_path(created_account)
+    assert_equal "Loan created successfully", flash[:notice]
+    assert_enqueued_with(job: AccountSyncJob)
+  end
+
+  test "updates loan" do
+    assert_no_difference [ "Account.count", "Loan.count" ] do
+      patch loan_path(@account), params: {
+        account: {
+          name: "Updated Loan",
+          balance: 45000,
+          currency: "USD",
+          accountable_type: "Loan",
+          accountable_attributes: {
+            id: @account.accountable_id,
+            interest_rate: 4.5,
+            term_months: 48,
+            rate_type: "fixed"
+          }
+        }
+      }
+    end
+
+    @account.reload
+
+    assert_equal "Updated Loan", @account.name
+    assert_equal 45000, @account.balance
+    assert_equal 4.5, @account.loan.interest_rate
+    assert_equal 48, @account.loan.term_months
+    assert_equal "fixed", @account.loan.rate_type
+
+    assert_redirected_to account_path(@account)
+    assert_equal "Loan updated successfully", flash[:notice]
+    assert_enqueued_with(job: AccountSyncJob)
+  end
+end