56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
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package civiltime
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import (
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"errors"
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"testing"
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"time"
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)
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func TestEventFiltersByActualCivilDay(t *testing.T) {
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loc, err := time.LoadLocation("America/New_York")
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if err != nil {
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t.Fatal(err)
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}
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missing := errors.New("no event on requested day")
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cases := []struct {
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month, day, offset, hour int
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wantFound bool
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}{
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{3, 8, -5, 23, false},
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{11, 1, -5, 23, true},
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}
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for _, tc := range cases {
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date := time.Date(2026, time.Month(tc.month), tc.day, 12, 0, 0, 0, loc)
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candidate := time.Date(2026, time.Month(tc.month), tc.day, tc.hour, 30, 0, 0, time.FixedZone("", tc.offset*3600))
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calls := 0
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got, err, handled := Event(date, missing, func(fixed time.Time) (time.Time, error) {
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calls++
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if fixed.Location() == loc {
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t.Fatal("calculation must use a fixed offset")
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}
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return candidate, nil
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})
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if !handled || calls != 2 {
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t.Fatalf("handled=%t calls=%d", handled, calls)
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}
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if tc.wantFound {
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if err != nil || !got.Equal(candidate) || got.Location() != loc {
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t.Errorf("got %s, %v; want %s", got, err, candidate)
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}
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} else if !got.IsZero() || !errors.Is(err, missing) {
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t.Errorf("outside-day result %s, %v", got, err)
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}
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}
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}
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func TestEventLeavesFixedOffsetToCaller(t *testing.T) {
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date := time.Date(2026, 11, 1, 12, 0, 0, 0, time.FixedZone("EST", -5*3600))
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_, _, handled := Event(date, nil, func(time.Time) (time.Time, error) {
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t.Fatal("ordinary day invoked fallback")
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return time.Time{}, nil
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})
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if handled {
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t.Fatal("ordinary day reported handled")
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}
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}
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