47 lines
1.6 KiB
Go
47 lines
1.6 KiB
Go
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// 被测契约：包级与实例视位置共用同一判据，零方向、非正距离、负光行时与非有限值一律报错。
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package basic
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import (
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"math"
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"testing"
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"b612.me/astro/internal/ephem"
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)
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type fixedApparentEngine struct {
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dir [3]float64
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dist, tau float64
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}
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func (e fixedApparentEngine) State(target, center ephem.Body, jdTDB float64) (pos, vel [3]float64, err error) {
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return pos, vel, ephem.ErrUnsupportedBody
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}
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func (e fixedApparentEngine) Coverage(ephem.Body) (start, end float64, ok bool) { return 0, 0, false }
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func (e fixedApparentEngine) Apparent(ephem.Body, float64) ([3]float64, float64, float64, error) {
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return e.dir, e.dist, e.tau, nil
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}
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func TestApparentStateRejectsInvalid(t *testing.T) {
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nan := math.NaN()
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for _, c := range []struct {
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name string
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e fixedApparentEngine
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ok bool
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}{
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{"valid", fixedApparentEngine{[3]float64{1, 0, 0}, 1.5e8, 0.0058}, true},
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{"nan direction", fixedApparentEngine{[3]float64{nan, 0, 0}, 1.5e8, 0.0058}, false},
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{"zero direction", fixedApparentEngine{[3]float64{}, 1.5e8, 0.0058}, false},
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{"zero distance", fixedApparentEngine{[3]float64{1, 0, 0}, 0, 0.0058}, false},
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{"inf distance", fixedApparentEngine{[3]float64{1, 0, 0}, math.Inf(1), 0.0058}, false},
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{"negative tau", fixedApparentEngine{[3]float64{1, 0, 0}, 1.5e8, -1}, false},
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{"nan tau", fixedApparentEngine{[3]float64{1, 0, 0}, 1.5e8, nan}, false},
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} {
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_, _, _, _, ok, err := apparentState(ephem.Sun, 2451545, ephem.NewInstance(c.e))
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if c.ok && (err != nil || !ok) || !c.ok && err == nil {
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t.Errorf("%s: ok=%v err=%v", c.name, ok, err)
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}
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}
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}
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