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test(genspec-tui): count every allocation when checking attribution #110

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Merged
fredbi merged 1 commit into from
Aug 14, 2026
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test(genspec-tui): count every allocation when checking attribution #110

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6 changes: 6 additions & 0 deletions cmd/genspec-tui/internal/ux/scan/profile_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -196,6 +196,12 @@ func TestProfilerDisabled(t *testing.T) {
}

func TestProfilerCapturesARun(t *testing.T) {
// At the default rate the heap profiler samples one allocation per 512 KiB, so a megabyte of test allocations is a
// Poisson draw with a mean of two: it comes back empty about one run in seven, whatever the machine or the
// toolchain. Counting every allocation makes the assertion below about attribution rather than about luck, and the
// runtime honours rate 1 from the next allocation - there is no threshold left over from the old rate.
countEveryAllocation(t)

dir := t.TempDir()

p := newProfiler(Profiling{Enabled: true, Dir: dir})
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