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fuj-management/go/internal/domain/fees/fees_test.go
Jan Novak 57ec817044
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feat(go/M2.3+M2.4): port domain/fees.CalculateFee and CalculateJuniorFee
Ports calculate_fee and calculate_junior_fee from scripts/attendance.py
into a new go/internal/domain/fees package. Introduces the Expected type
(Value int, Unknown bool) for the junior "?" sentinel, keeping the Go
API strictly typed instead of mirroring Python's str|int return.

All 20 table-driven tests pass with -race; golangci-lint clean.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-06 00:38:09 +02:00

38 lines
1.2 KiB
Go

package fees
import "testing"
func TestCalculateFee(t *testing.T) {
t.Parallel()
// All expected outputs verified against live Python implementation on 2026-05-06:
// PYTHONPATH=scripts:. python -c 'from attendance import calculate_fee; print([calculate_fee(c,m) for c,m in [(0,"2026-05"),(0,""),(1,"2026-05"),(1,"unknown"),(2,"2026-05"),(2,"2026-03"),(2,"2025-09"),(5,"2026-05"),(2,"2027-01"),(2,"")]])'
tests := []struct {
name string
count int
month string
want int
}{
{"zero short-circuits", 0, "2026-05", 0},
{"zero empty month", 0, "", 0},
{"single practice", 1, "2026-05", 200},
{"single ignores monthKey", 1, "unknown", 200},
{"two practices configured month", 2, "2026-05", 700},
{"two practices reduced march", 2, "2026-03", 350},
{"two practices early season", 2, "2025-09", 750},
{"high count same as two", 5, "2026-05", 700},
{"unknown future month falls back", 2, "2027-01", 700},
{"empty month falls back", 2, "", 700},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
got := CalculateFee(tc.count, tc.month)
if got != tc.want {
t.Errorf("CalculateFee(%d, %q) = %d, want %d", tc.count, tc.month, got, tc.want)
}
})
}
}