Jan Novak
f047150004
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Configured-month cases now read expected values from AdultFeeMonthlyRate / JuniorFeeMonthlyRate via a mustRate helper that panics if a test month is removed from the map. Fallback cases use AdultFeeDefault / JuniorFeeDefault. This way the tests verify dispatch logic (0/1/2+ branching, map vs. fallback) without breaking when rates are intentionally updated in the map. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
51 lines
1.8 KiB
Go
51 lines
1.8 KiB
Go
package fees
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import "testing"
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func TestCalculateJuniorFee(t *testing.T) {
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t.Parallel()
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// mustRate returns the configured rate for a month that must be in the map.
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// Panics immediately if the month is absent so a removed entry causes a loud
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// failure rather than a silent comparison against Go's zero value.
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mustRate := func(month string) Expected {
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r, ok := JuniorFeeMonthlyRate[month]
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if !ok {
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panic("test month not in JuniorFeeMonthlyRate: " + month)
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}
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return Expected{Value: r}
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}
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tests := []struct {
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name string
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count int
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month string
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want Expected
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}{
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// Zero attendance always returns 0.
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{"zero short-circuits", 0, "2026-05", Expected{Value: 0}},
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{"zero empty month", 0, "", Expected{Value: 0}},
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// Single practice returns the Unknown sentinel regardless of month.
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{"single practice sentinel", 1, "2026-05", Expected{Unknown: true}},
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{"single ignores monthKey", 1, "unknown", Expected{Unknown: true}},
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// Two+ practices for a configured month: must use the map value, not the default.
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{"two practices unconfigured month", 2, "2026-05", Expected{Value: JuniorFeeDefault}},
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{"two practices reduced sept", 2, "2025-09", mustRate("2025-09")},
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{"two practices reduced march", 2, "2026-03", mustRate("2026-03")},
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{"high count same as two", 5, "2025-09", mustRate("2025-09")},
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// Two+ practices for an unknown/future month: must fall back to JuniorFeeDefault.
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{"unknown future month falls back", 2, "2027-01", Expected{Value: JuniorFeeDefault}},
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{"empty month falls back", 2, "", Expected{Value: JuniorFeeDefault}},
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}
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for _, tc := range tests {
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t.Run(tc.name, func(t *testing.T) {
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t.Parallel()
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got := CalculateJuniorFee(tc.count, tc.month)
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if got != tc.want {
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t.Errorf("CalculateJuniorFee(%d, %q) = %+v, want %+v", tc.count, tc.month, got, tc.want)
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}
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})
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}
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}
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