astro/basic/venus_event_regression_test.go

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package basic
import (
"encoding/json"
"math"
"os"
"testing"
)
type venusEventBaselineSample struct {
InputUTC string `json:"input_utc"`
TTJDBits uint64 `json:"tt_jd_bits"`
Events map[string]uint64 `json:"events"`
}
type venusEventBaseline struct {
Samples []venusEventBaselineSample `json:"samples"`
}
func loadVenusEventBaseline(t *testing.T) venusEventBaseline {
t.Helper()
data, err := os.ReadFile("testdata/venus_event_baseline.json")
if err != nil {
t.Fatal(err)
}
var baseline venusEventBaseline
if err := json.Unmarshal(data, &baseline); err != nil {
t.Fatal(err)
}
if len(baseline.Samples) == 0 {
t.Fatal("empty venus event baseline")
}
return baseline
}
func TestVenusEventBaselineRegression(t *testing.T) {
baseline := loadVenusEventBaseline(t)
cases := venusEventCases()
for _, sample := range baseline.Samples {
jd := math.Float64frombits(sample.TTJDBits)
for _, event := range cases {
wantBits, ok := sample.Events[event.name]
if !ok {
t.Fatalf("%s missing baseline event %s", sample.InputUTC, event.name)
}
want := math.Float64frombits(wantBits)
got := event.fn(jd)
diff := math.Abs(got - want)
if diff > event.tolerance {
t.Fatalf("%s %s diff %.12f > tolerance %.12f", sample.InputUTC, event.name, diff, event.tolerance)
}
}
}
}