feat: implement payout system database schema and models

test/models/earning_test.rb

@@ -0,0 +1,86 @@
+require "test_helper"
+
+class EarningTest < ActiveSupport::TestCase
+  setup do
+    @user = users(:one) || User.create!(email: "test@example.com", password: "password")
+    @event = events(:concert_event) || Event.create!(name: "Test Event", slug: "test-event", description: "Description", venue_name: "Venue", venue_address: "Address", latitude: 48.8566, longitude: 2.3522, start_time: Time.current, user: @user)
+    @order = orders(:paid_order) || Order.create!(user: @user, event: @event, status: "paid", total_amount_cents: 10000)
+    @earning = Earning.create!(event: @event, user: @user, order: @order, amount_cents: 9000, fee_cents: 1000, status: :pending)
+  end
+
+  test "valid earning" do
+    assert @earning.valid?
+  end
+
+  test "amount_cents must be present and non-negative" do
+    @earning.amount_cents = nil
+    assert_not @earning.valid?
+    assert_includes @earning.errors[:amount_cents], "can't be blank"
+
+    @earning.amount_cents = -1
+    assert_not @earning.valid?
+    assert_includes @earning.errors[:amount_cents], "must be greater than or equal to 0"
+  end
+
+  test "fee_cents must be present and non-negative" do
+    @earning.fee_cents = nil
+    assert_not @earning.valid?
+    assert_includes @earning.errors[:fee_cents], "can't be blank"
+
+    @earning.fee_cents = -1
+    assert_not @earning.valid?
+    assert_includes @earning.errors[:fee_cents], "must be greater than or equal to 0"
+  end
+
+  test "status must be present" do
+    @earning.status = nil
+    assert_not @earning.valid?
+    assert_includes @earning.errors[:status], "can't be blank"
+  end
+
+  test "stripe_payout_id must be unique if present" do
+    @earning.stripe_payout_id = "test_payout"
+    @earning.save!
+
+    duplicate = @earning.dup
+    duplicate.stripe_payout_id = "test_payout"
+
+    assert_not duplicate.valid?
+    assert_includes duplicate.errors[:stripe_payout_id], "has already been taken"
+  end
+
+  test "belongs to associations" do
+    assert_instance_of Event, @earning.event
+    assert_instance_of User, @earning.user
+    assert_instance_of Order, @earning.order
+  end
+
+  test "status enum" do
+    assert_equal 0, Earning.statuses[:pending]
+    assert_equal 1, Earning.statuses[:paid]
+
+    assert @earning.pending?
+    assert_not @earning.paid?
+
+    @earning.status = :paid
+    @earning.save!
+    assert @earning.paid?
+    assert_not @earning.pending?
+  end
+
+  test "pending scope from enum" do
+    pending_earning = Earning.create!(event: @event, user: @user, order: @order, amount_cents: 9000, fee_cents: 1000, status: :pending)
+    paid_earning = Earning.create!(event: @event, user: @user, order: @order, amount_cents: 4500, fee_cents: 500, status: :paid)
+
+    assert_includes Earning.pending, pending_earning
+    assert_not_includes Earning.pending, paid_earning
+  end
+
+  test "paid scope from enum" do
+    pending_earning = Earning.create!(event: @event, user: @user, order: @order, amount_cents: 9000, fee_cents: 1000, status: :pending)
+    paid_earning = Earning.create!(event: @event, user: @user, order: @order, amount_cents: 4500, fee_cents: 500, status: :paid)
+
+    assert_not_includes Earning.paid, pending_earning
+    assert_includes Earning.paid, paid_earning
+  end
+end