124 lines
3.9 KiB
Go
124 lines
3.9 KiB
Go
package changes
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import (
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"testing"
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"time"
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"gitea.maximumdirect.net/eric/weatherreporter/internal/briefing"
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"gitea.maximumdirect.net/eric/weatherreporter/internal/forecast"
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)
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func TestCompareDailyNoMeaningfulChanges(t *testing.T) {
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previous := dailyBriefing(60, 70, 30, at("2026-05-29T08:00:00Z"), nil, forecast.Indicators{})
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current := dailyBriefing(61, 71, 35, at("2026-05-29T08:30:00Z"), nil, forecast.Indicators{})
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changes, err := CompareDaily(previous, current, testThresholds())
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if err != nil {
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t.Fatalf("CompareDaily() error = %v", err)
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}
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if len(changes) != 0 {
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t.Fatalf("changes = %#v, want none", changes)
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}
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}
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func TestCompareDailyTemperatureThreshold(t *testing.T) {
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previous := dailyBriefing(50, 70, 10, at("2026-05-29T08:00:00Z"), nil, forecast.Indicators{})
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current := dailyBriefing(58, 79, 10, at("2026-05-29T08:00:00Z"), nil, forecast.Indicators{})
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changes, err := CompareDaily(previous, current, testThresholds())
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if err != nil {
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t.Fatalf("CompareDaily() error = %v", err)
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}
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if countType(changes, "temperature_shift") != 2 {
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t.Fatalf("changes = %#v, want low and high temperature changes", changes)
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}
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}
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func TestCompareDailyPrecipTimingShift(t *testing.T) {
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previous := dailyBriefing(60, 70, 60, at("2026-05-29T08:00:00Z"), nil, forecast.Indicators{})
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current := dailyBriefing(60, 70, 60, at("2026-05-29T11:00:00Z"), nil, forecast.Indicators{})
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changes, err := CompareDaily(previous, current, testThresholds())
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if err != nil {
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t.Fatalf("CompareDaily() error = %v", err)
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}
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if countType(changes, "precip_timing_shift") != 1 {
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t.Fatalf("changes = %#v, want timing shift", changes)
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}
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}
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func TestCompareDailyAlertAddedAndRemoved(t *testing.T) {
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previous := dailyBriefing(60, 70, 10, at("2026-05-29T08:00:00Z"), []string{"Wind Advisory"}, forecast.Indicators{})
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current := dailyBriefing(60, 70, 10, at("2026-05-29T08:00:00Z"), []string{"Flood Watch"}, forecast.Indicators{})
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changes, err := CompareDaily(previous, current, testThresholds())
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if err != nil {
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t.Fatalf("CompareDaily() error = %v", err)
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}
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if countType(changes, "alert_added") != 1 || countType(changes, "alert_removed") != 1 {
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t.Fatalf("changes = %#v, want one alert added and one removed", changes)
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}
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}
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func TestCompareDailyIndicatorChange(t *testing.T) {
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previous := dailyBriefing(60, 70, 10, at("2026-05-29T08:00:00Z"), nil, forecast.Indicators{})
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current := dailyBriefing(60, 70, 10, at("2026-05-29T08:00:00Z"), nil, forecast.Indicators{Thunder: true})
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changes, err := CompareDaily(previous, current, testThresholds())
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if err != nil {
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t.Fatalf("CompareDaily() error = %v", err)
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}
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if countType(changes, "thunder_risk_change") != 1 {
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t.Fatalf("changes = %#v, want thunder risk change", changes)
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}
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}
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func dailyBriefing(low float64, high float64, precip float64, precipTime time.Time, alerts []string, indicators forecast.Indicators) briefing.Package {
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alertOverlaps := make([]forecast.AlertOverlap, 0, len(alerts))
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for _, alert := range alerts {
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alertOverlaps = append(alertOverlaps, forecast.AlertOverlap{Event: alert})
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}
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return briefing.Package{
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Daily: &briefing.Daily{
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BottomLine: briefing.BottomLine{
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Temperature: forecast.Range{Min: &low, Max: &high},
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MaxPrecipProbability: &forecast.TimedValue{
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Value: precip,
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Time: precipTime,
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},
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},
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RelevantAlerts: alertOverlaps,
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Dayparts: []forecast.DaypartSummary{
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{Name: "morning", Indicators: indicators},
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},
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},
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}
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}
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func testThresholds() Thresholds {
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return Thresholds{
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TemperatureDegrees: 5,
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PrecipProbabilityPoints: 20,
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WindGustMilesPerHour: 10,
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PrecipTimingShiftMinutes: 120,
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}
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}
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func countType(changes []Change, changeType string) int {
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var count int
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for _, change := range changes {
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if change.Type == changeType {
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count++
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}
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}
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return count
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}
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func at(value string) time.Time {
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parsed, err := time.Parse(time.RFC3339, value)
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if err != nil {
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panic(err)
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}
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return parsed
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}
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