remove currency model and all references

spec/models/balance_spec.rb

@@ -4,21 +4,18 @@
 #
 # Table name: balances
 #
-#  id          :bigint           not null, primary key
-#  amount      :decimal(20, 10)  default(0.0), not null
-#  created_at  :datetime         not null
-#  updated_at  :datetime         not null
-#  currency_id :bigint           not null
-#  user_id     :bigint           not null
+#  id         :bigint           not null, primary key
+#  amount     :decimal(20, 10)  default(0.0), not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#  user_id    :bigint           not null
 #
 # Indexes
 #
-#  index_balances_on_currency_id  (currency_id)
-#  index_balances_on_user_id      (user_id)
+#  index_balances_on_user_id  (user_id)
 #
 # Foreign Keys
 #
-#  fk_rails_...  (currency_id => currencies.id)
 #  fk_rails_...  (user_id => users.id)
 #
 require "rails_helper"
@@ -30,7 +27,6 @@ RSpec.describe(Balance, type: :model) do
 
   describe "associations" do
     it { is_expected.to(belong_to(:user)) }
-    it { is_expected.to(belong_to(:currency)) }
   end
 
   describe ".withdrwal!" do

spec/models/buy_crypto_order_spec.rb

@@ -10,17 +10,14 @@
 #  status            :string           not null
 #  created_at        :datetime         not null
 #  updated_at        :datetime         not null
-#  currency_id       :bigint           not null
 #  user_id           :bigint           not null
 #
 # Indexes
 #
-#  index_buy_crypto_orders_on_currency_id  (currency_id)
-#  index_buy_crypto_orders_on_user_id      (user_id)
+#  index_buy_crypto_orders_on_user_id  (user_id)
 #
 # Foreign Keys
 #
-#  fk_rails_...  (currency_id => currencies.id)
 #  fk_rails_...  (user_id => users.id)
 #
 require "rails_helper"
@@ -51,6 +48,5 @@ RSpec.describe(BuyCryptoOrder, type: :model) do
 
   describe "associations" do
     it { is_expected.to(belong_to(:user)) }
-    it { is_expected.to(belong_to(:currency)) }
   end
 end

spec/models/currency_spec.rb

@@ -1,18 +0,0 @@
-# frozen_string_literal: true
-
-# == Schema Information
-#
-# Table name: currencies
-#
-#  id         :bigint           not null, primary key
-#  name       :string           not null
-#  created_at :datetime         not null
-#  updated_at :datetime         not null
-#
-require "rails_helper"
-
-RSpec.describe(Currency, type: :model) do
-  describe "validations" do
-    it { is_expected.to(validate_presence_of(:name)) }
-  end
-end

spec/models/sell_crypto_order_spec.rb

@@ -10,17 +10,14 @@
 #  status                :string           not null
 #  created_at            :datetime         not null
 #  updated_at            :datetime         not null
-#  currency_id           :bigint           not null
 #  user_id               :bigint           not null
 #
 # Indexes
 #
-#  index_sell_crypto_orders_on_currency_id  (currency_id)
-#  index_sell_crypto_orders_on_user_id      (user_id)
+#  index_sell_crypto_orders_on_user_id  (user_id)
 #
 # Foreign Keys
 #
-#  fk_rails_...  (currency_id => currencies.id)
 #  fk_rails_...  (user_id => users.id)
 #
 require "rails_helper"
@@ -51,6 +48,5 @@ RSpec.describe(SellCryptoOrder, type: :model) do
 
   describe "associations" do
     it { is_expected.to(belong_to(:user)) }
-    it { is_expected.to(belong_to(:currency)) }
   end
 end

spec/models/stake_order_spec.rb

@@ -4,23 +4,20 @@
 #
 # Table name: stake_orders
 #
-#  id          :bigint           not null, primary key
-#  amount      :decimal(20, 10)  default(0.0), not null
-#  pool_name   :string           not null
-#  status      :string           not null
-#  created_at  :datetime         not null
-#  updated_at  :datetime         not null
-#  currency_id :bigint
-#  user_id     :bigint           not null
+#  id         :bigint           not null, primary key
+#  amount     :decimal(20, 10)  default(0.0), not null
+#  pool_name  :string           not null
+#  status     :string           not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#  user_id    :bigint           not null
 #
 # Indexes
 #
-#  index_stake_orders_on_currency_id  (currency_id)
-#  index_stake_orders_on_user_id      (user_id)
+#  index_stake_orders_on_user_id  (user_id)
 #
 # Foreign Keys
 #
-#  fk_rails_...  (currency_id => currencies.id)
 #  fk_rails_...  (user_id => users.id)
 #
 require "rails_helper"
@@ -33,6 +30,5 @@ RSpec.describe(StakeOrder, type: :model) do
 
   describe "associations" do
     it { is_expected.to(belong_to(:user)) }
-    it { is_expected.to(belong_to(:currency)) }
   end
 end

spec/models/user_spec.rb

@@ -33,7 +33,7 @@ RSpec.describe(User, type: :model) do
   describe "associations" do
     it { is_expected.to(have_many(:documents)) }
     it { is_expected.to(have_many(:stake_orders)) }
-    it { is_expected.to(have_many(:balances)) }
+    it { is_expected.to(have_one(:balance)) }
     it { is_expected.to(have_one(:fiat_balance)) }
   end
 end