848a5e8036
Move module declaration and all internal imports from github.com/Snider/Poindexter to forge.lthn.ai/Snider/Poindexter. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
49 lines
1 KiB
Go
49 lines
1 KiB
Go
package main
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import (
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"testing"
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poindexter "forge.lthn.ai/Snider/Poindexter"
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)
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type peer2 struct {
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ID string
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PingMS float64
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Hops float64
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}
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func TestExample2D(t *testing.T) {
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peers := []peer2{
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{ID: "A", PingMS: 22, Hops: 3},
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{ID: "B", PingMS: 34, Hops: 2},
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{ID: "C", PingMS: 15, Hops: 4},
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{ID: "D", PingMS: 55, Hops: 1},
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{ID: "E", PingMS: 18, Hops: 2},
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}
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weights := [2]float64{1.0, 1.0}
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invert := [2]bool{false, false}
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pts, err := poindexter.Build2D(
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peers,
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func(p peer2) string { return p.ID },
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func(p peer2) float64 { return p.PingMS },
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func(p peer2) float64 { return p.Hops },
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weights, invert,
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)
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if err != nil {
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t.Fatalf("Build2D err: %v", err)
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}
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tr, err := poindexter.NewKDTree(pts, poindexter.WithMetric(poindexter.ManhattanDistance{}))
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if err != nil {
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t.Fatalf("NewKDTree err: %v", err)
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}
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best, d, ok := tr.Nearest([]float64{0, 0.3})
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if !ok {
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t.Fatalf("no nearest")
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}
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if best.ID == "" {
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t.Fatalf("unexpected empty ID")
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}
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if d < 0 {
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t.Fatalf("negative distance: %v", d)
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}
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}
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