mirror of
https://github.com/tailscale/tailscale.git
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65 lines
1.2 KiB
Go
65 lines
1.2 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package metrics
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import (
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"os"
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"runtime"
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"testing"
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"tailscale.com/tstest"
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)
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func TestLabelMap(t *testing.T) {
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var m LabelMap
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m.GetIncrFunc("foo")(1)
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m.GetIncrFunc("bar")(2)
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if g, w := m.Get("foo").Value(), int64(1); g != w {
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t.Errorf("foo = %v; want %v", g, w)
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}
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if g, w := m.Get("bar").Value(), int64(2); g != w {
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t.Errorf("bar = %v; want %v", g, w)
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}
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}
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func TestCurrentFileDescriptors(t *testing.T) {
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if runtime.GOOS != "linux" {
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t.Skipf("skipping on %v", runtime.GOOS)
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}
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n := CurrentFDs()
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if n < 3 {
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t.Fatalf("got %v; want >= 3", n)
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}
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err := tstest.MinAllocsPerRun(t, 0, func() {
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n = CurrentFDs()
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})
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if err != nil {
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t.Fatal(err)
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}
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// Open some FDs.
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const extra = 10
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for i := 0; i < extra; i++ {
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f, err := os.Open("/proc/self/stat")
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if err != nil {
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t.Fatal(err)
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}
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defer f.Close()
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t.Logf("fds for #%v = %v", i, CurrentFDs())
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}
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n2 := CurrentFDs()
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if n2 < n+extra {
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t.Errorf("fds changed from %v => %v, want to %v", n, n2, n+extra)
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}
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}
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func BenchmarkCurrentFileDescriptors(b *testing.B) {
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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_ = CurrentFDs()
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}
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}
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