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package ride
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestBacktestEligibilityExcludesShortDistances(t *testing.T) {
short := StoredRide{FitPath: "fit", DistanceM: 10_000 - 1, ExternalMovingTimeS: 8_000, ElapsedTimeS: 10_000, BikeType: BikeTypeRoad, RideType: RideTypeTraining}
minimum := StoredRide{FitPath: "fit", DistanceM: 10_000, ExternalMovingTimeS: 8_000, ElapsedTimeS: 10_000, BikeType: BikeTypeRoad, RideType: RideTypeTraining}
assert.True(t, isBacktestEligible(short))
assert.True(t, isBacktestEligible(minimum))
}
func TestBacktestEligibilityExcludesLowMovingRatio(t *testing.T) {
low := StoredRide{FitPath: "fit", DistanceM: 10_000, ExternalMovingTimeS: 7_999, ElapsedTimeS: 10_000, BikeType: BikeTypeRoad, RideType: RideTypeTraining}
boundary := StoredRide{FitPath: "fit", DistanceM: 10_000, ExternalMovingTimeS: 8_000, ElapsedTimeS: 10_000, BikeType: BikeTypeRoad, RideType: RideTypeTraining}
noElapsed := StoredRide{FitPath: "fit", DistanceM: 10_000, ExternalMovingTimeS: 1, BikeType: BikeTypeRoad, RideType: RideTypeTraining}
assert.True(t, isBacktestEligible(low))
assert.True(t, isBacktestEligible(boundary))
assert.False(t, isBacktestEligible(noElapsed))
}
func TestBacktestEligibilityExcludesUncategorisedAndIndoorTransport(t *testing.T) {
base := StoredRide{FitPath: "fit", ExternalMovingTimeS: 8_000, ElapsedTimeS: 10_000, BikeType: BikeTypeRoad, RideType: RideTypeTraining}
uncategorised := StoredRide{FitPath: "fit", ExternalMovingTimeS: 8_000, ElapsedTimeS: 10_000}
indoor := StoredRide{FitPath: "fit", ExternalMovingTimeS: 8_000, ElapsedTimeS: 10_000, BikeType: BikeTypeRoad, RideType: RideTypeIndoor}
transport := StoredRide{FitPath: "fit", ExternalMovingTimeS: 8_000, ElapsedTimeS: 10_000, BikeType: BikeTypeRoad, RideType: RideTypeTransport}
race := StoredRide{FitPath: "fit", ExternalMovingTimeS: 8_000, ElapsedTimeS: 10_000, BikeType: BikeTypeMTB, RideType: RideTypeRace}
assert.True(t, isBacktestEligible(base))
assert.False(t, isBacktestEligible(uncategorised))
assert.False(t, isBacktestEligible(indoor))
assert.False(t, isBacktestEligible(transport))
assert.True(t, isBacktestEligible(race))
}
func TestBacktestStatsUseUnroundedSamples(t *testing.T) {
absErrors := []float64{0, 0.1, 0.1}
assert.InDelta(t, 1.0/15, meanAbsErr(absErrors), 1e-12)
assert.InDelta(t, 1.0/30, stdErrAbsErr(absErrors), 1e-12)
}
func TestErrorDistributionUsesNearestRank(t *testing.T) {
distribution := errorDistribution([]float64{1, 2, 3, 4}, []float64{50, 75, 99})
assert.Equal(t, 2.0, distribution[50])
assert.Equal(t, 3.0, distribution[75])
assert.Equal(t, 4.0, distribution[99])
}
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