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holding: Add multi-currency support for average costs calculations. (#2153)

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Fixes: #2051.
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Joseph Ho 2025-05-06 12:12:44 -04:00 • committed by GitHub
parent 60c3a04a48
commit 8c10e87387
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3 changed files with 30 additions and 11 deletions
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17
test/models/holding_test.rb
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@ -19,15 +19,26 @@ class HoldingTest < ActiveSupport::TestCase
assert_in_delta expected_nvda_weight, @nvda.weight, 0.001
end
test "calculates simple average cost basis" do
test "calculates average cost basis" do
create_trade(@amzn.security, account: @account, qty: 10, price: 212.00, date: 1.day.ago.to_date)
create_trade(@amzn.security, account: @account, qty: 15, price: 216.00, date: Date.current)
create_trade(@nvda.security, account: @account, qty: 5, price: 128.00, date: 1.day.ago.to_date)
create_trade(@nvda.security, account: @account, qty: 30, price: 124.00, date: Date.current)
assert_equal Money.new((212.0 + 216.0) / 2), @amzn.avg_cost
assert_equal Money.new((128.0 + 124.0) / 2), @nvda.avg_cost
assert_equal Money.new((212.00 + 216.00).to_d / 2), @amzn.avg_cost
assert_equal Money.new((128.00 + 124.00).to_d / 2), @nvda.avg_cost
end
test "calculates average cost basis from another currency" do
create_trade(@amzn.security, account: @account, qty: 10, price: 212.00, date: 1.day.ago.to_date, currency: "CAD")
create_trade(@amzn.security, account: @account, qty: 15, price: 216.00, date: Date.current, currency: "CAD")
create_trade(@nvda.security, account: @account, qty: 5, price: 128.00, date: 1.day.ago.to_date, currency: "CAD")
create_trade(@nvda.security, account: @account, qty: 30, price: 124.00, date: Date.current, currency: "CAD")
assert_equal Money.new((212.00 + 216.00).to_d / 2, "CAD").exchange_to("USD", fallback_rate: 1), @amzn.avg_cost
assert_equal Money.new((128.00 + 124.00).to_d / 2, "CAD").exchange_to("USD", fallback_rate: 1), @nvda.avg_cost
end
test "calculates total return trend" do