sure/test/controllers/goals_controller_test.rb

require "test_helper"

class GoalsControllerTest < ActionDispatch::IntegrationTest
  setup do
    sign_in users(:family_admin)
    @goal = goals(:vacation_italy)
    @depository = accounts(:depository)
    @connected = accounts(:connected)
    ensure_tailwind_build
  end

  test "index renders with active filter by default" do
    get goals_url
    assert_response :success
    assert_match(/Goals/i, response.body)
  end

  test "index honors state filter" do
    get goals_url(state: "paused")
    assert_response :success
  end

  test "show renders the goal" do
    get goal_url(@goal)
    assert_response :success
    assert_match(@goal.name, response.body)
  end

  test "new renders the modal form" do
    get new_goal_url
    assert_response :success
  end

  test "create persists a goal with linked accounts" do
    assert_difference -> { Goal.count } => 1,
                      -> { GoalAccount.count } => 2 do
      post goals_url, params: {
        goal: {
          name: "New goal",
          target_amount: "1000",
          target_date: 3.months.from_now.to_date.iso8601,
          color: "#4da568",
          account_ids: [ @depository.id, @connected.id ]
        }
      }
    end

    goal = Goal.order(created_at: :desc).first
    assert_redirected_to goal_path(goal)
  end

  test "create rejects missing account_ids" do
    assert_no_difference "Goal.count" do
      post goals_url, params: {
        goal: {
          name: "Bad goal",
          target_amount: "1000",
          color: "#4da568"
        }
      }
    end
    assert_response :unprocessable_entity
  end

  test "create rejects foreign accounts" do
    other_family = Family.create!(name: "Other", currency: "USD", locale: "en", country: "US", timezone: "UTC")
    foreign = Account.create!(family: other_family, accountable: Depository.new, name: "Foreign", currency: "USD", balance: 100)

    assert_no_difference "Goal.count" do
      post goals_url, params: {
        goal: {
          name: "Foreign goal",
          target_amount: "1000",
          color: "#4da568",
          account_ids: [ foreign.id ]
        }
      }
    end
    assert_response :unprocessable_entity
  end

  test "update modifies identity fields" do
    patch goal_url(@goal), params: { goal: { name: "Renamed" } }
    assert_redirected_to goal_path(@goal)
    assert_equal "Renamed", @goal.reload.name
  end

  test "update without account_ids leaves linked accounts intact" do
    before = @goal.goal_accounts.pluck(:account_id).sort
    patch goal_url(@goal), params: { goal: { name: "Still here" } }
    assert_redirected_to goal_path(@goal)
    assert_equal before, @goal.reload.goal_accounts.pluck(:account_id).sort
  end

  test "update with account_ids syncs linked accounts (add + remove)" do
    patch goal_url(@goal), params: { goal: { account_ids: [ @connected.id ] } }
    assert_redirected_to goal_path(@goal)
    assert_equal [ @connected.id ], @goal.reload.goal_accounts.pluck(:account_id)
  end

  test "update with empty account_ids re-renders with error" do
    patch goal_url(@goal), params: { goal: { account_ids: [ "" ] } }
    assert_response :unprocessable_entity
    assert_not_empty @goal.reload.goal_accounts
  end

  test "update rejects a cross-currency account attachment" do
    # Regression: sync_linked_accounts! used to call goal_accounts.create!
    # directly, bypassing Goal#linked_accounts_must_match_goal_currency.
    eur_account = Account.create!(
      family: @goal.family,
      accountable: Depository.new,
      name: "EUR Checking",
      currency: "EUR",
      balance: 100
    )
    before_ids = @goal.goal_accounts.pluck(:account_id).sort

    patch goal_url(@goal), params: { goal: { account_ids: [ eur_account.id ] } }

    assert_response :unprocessable_entity
    assert_equal before_ids, @goal.reload.goal_accounts.pluck(:account_id).sort
  end

  test "pause/resume/complete/archive/unarchive flow" do
    fresh = goals(:emergency_fund)
    patch pause_goal_url(fresh)
    assert fresh.reload.paused?
    patch resume_goal_url(fresh)
    assert fresh.reload.active?
    patch complete_goal_url(fresh)
    assert fresh.reload.completed?
    patch archive_goal_url(fresh)
    assert fresh.reload.archived?
    patch unarchive_goal_url(fresh)
    assert fresh.reload.active?
  end

  test "destroy on non-archived is rejected" do
    assert_no_difference "Goal.count" do
      delete goal_url(@goal)
    end
    assert_redirected_to goal_path(@goal)
  end

  test "destroy on archived deletes" do
    @goal.archive!
    assert_difference "Goal.count", -1 do
      delete goal_url(@goal)
    end
    assert_redirected_to goals_path
  end

  test "another family's goal returns 404" do
    other_family = Family.create!(name: "Other", currency: "USD", locale: "en", country: "US", timezone: "UTC")
    other_account = Account.create!(family: other_family, accountable: Depository.new, name: "Foreign", currency: "USD", balance: 100)
    other_goal = other_family.goals.new(name: "Foreign goal", target_amount: 100, currency: "USD")
    other_goal.goal_accounts.build(account: other_account)
    other_goal.save!

    get goal_url(other_goal)
    assert_redirected_to goals_path
    assert_equal I18n.t("goals.errors.not_found"), flash[:alert]
  end
end