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48 lines
934 B
Go
48 lines
934 B
Go
// Copyright ©2020 The Gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package uid implements unique ID provision for graphs.
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package uid
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import (
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"math"
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"testing"
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"golang.org/x/exp/rand"
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)
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func TestSetChurn(t *testing.T) {
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rnd := rand.New(rand.NewSource(1))
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set := NewSet()
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// Iterate over a number of ID allocations,
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// occasionally deleting IDs from the store.
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seen := make(map[int64]bool)
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for k := 0; k < 2; k++ {
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for i := 0; i < 1e4; i++ {
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id := set.NewID()
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if seen[id] {
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t.Fatalf("NewID returned already used ID")
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}
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set.Use(id)
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seen[id] = true
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if rnd.Float64() < 0.01 {
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j := rnd.Intn(10)
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for id := range seen {
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set.Release(id)
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delete(seen, id)
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j--
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if j <= 0 {
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break
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}
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}
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}
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}
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// Kick the set into scavenging mode.
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set.Use(math.MaxInt64)
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}
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}
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