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all: use testingutil.MinAllocsPerRun

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There are a few remaining uses of testing.AllocsPerRun:
Two in which we only log the number of allocations,
and one in which dynamically calculate the allocations
target based on a different AllocsPerRun run.

This also allows us to tighten the "no allocs"
test in wgengine/filter.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
This commit is contained in:
Josh Bleecher Snyder
2021-10-27 16:21:44 -07:00
committed by Josh Bleecher Snyder
parent 1df865a580
commit 94fb42d4b2
11 changed files with 63 additions and 58 deletions
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10
metrics/metrics_test.go
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@ -8,6 +8,8 @@ import (
"os"
"runtime"
"testing"
"tailscale.com/tstest"
)
func TestCurrentFileDescriptors(t *testing.T) {
@ -19,11 +21,11 @@ func TestCurrentFileDescriptors(t *testing.T) {
t.Fatalf("got %v; want >= 3", n)
}
allocs := int(testing.AllocsPerRun(100, func() {
err := tstest.MinAllocsPerRun(t, 0, func() {
n = CurrentFDs()
}))
if allocs != 0 {
t.Errorf("allocs = %v; want 0", allocs)
})
if err != nil {
t.Fatal(err)
}
// Open some FDs.