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The case BenchmarkRange seems has some problem ?

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
40/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Domain
testing

Research direction

Look at the benchmark code in the issue; the map is empty because the setup function is nil. Find the benchmark file (likely in the repository root or a test directory) and examine the BenchmarkRange test. Check how the map is populated before the timer starts. The fix is to add proper setup to fill the map with data before b.ResetTimer(). Run the benchmark to verify the results are realistic.

Written by the indexing model from the issue text.

Description

// syncmap code:
	b.Run(fmt.Sprintf("%T", &IntMap{}), func(b *testing.B) {
		m := &IntMap{}
		// setup:

		// reset:
		b.ResetTimer()

		// perG:
		perG := func(b *testing.B, pb *testing.PB, i int, m *IntMap) {
			for ; pb.Next(); i++ {
				m.Range(func(_, _ int) bool { return true })
			}
		}
		var i int64
		b.RunParallel(func(pb *testing.PB) {
			id := int(atomic.AddInt64(&i, 1) - 1)
			perG(b, pb, id*b.N, m)
		})
	})

seems the setup function is nil, then the map is empy, so at the benrchmark result, it seems vary fast

Dominant language
Go
Stars
257
Forks
17
No merged PRs in 30d

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