62 lines
1.7 KiB
Go
62 lines
1.7 KiB
Go
// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
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// SPDX-License-Identifier: MIT
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package io
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// Benchmarks for the paths the coordinator's battery does not isolate.
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// Every fixture is deterministic and built before the measured loop.
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import (
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"os"
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"path/filepath"
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"testing"
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)
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// BenchmarkWaveFITSBinaryTextCells measures the character-column decode
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// alone: one 8A column of four thousand rows, the per-cell work the
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// binary-table benchmark mixes with seven numeric columns.
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func BenchmarkWaveFITSBinaryTextCells(b *testing.B) {
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const rows = 4000
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path := filepath.Join(b.TempDir(), "textcells.fits")
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body := make([]byte, rows*8)
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for r := range rows {
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copy(body[r*8:], "star ")
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}
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cards := []string{
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fitsStringCardRaw("XTENSION", "BINTABLE"),
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fitsIntCard("BITPIX", 8),
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fitsIntCard("NAXIS", 2),
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fitsIntCard("NAXIS1", 8),
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fitsIntCard("NAXIS2", rows),
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fitsIntCard("PCOUNT", 0),
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fitsIntCard("GCOUNT", 1),
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fitsIntCard("TFIELDS", 1),
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fitsStringCardRaw("TTYPE1", "STAR"),
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fitsStringCardRaw("TFORM1", "8A"),
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fitsEndCard(),
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}
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out := fitsAppendCards(nil, []string{
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fitsBoolCard("SIMPLE", true),
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fitsIntCard("BITPIX", 8),
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fitsIntCard("NAXIS", 0),
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fitsBoolCard("EXTEND", true),
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fitsEndCard(),
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})
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out = fitsAppendCards(out, cards)
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out = append(out, body...)
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out = fitsAppendZeroPad(out)
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if err := os.WriteFile(path, out, 0o644); err != nil {
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b.Fatal(err)
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}
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b.ReportAllocs()
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for b.Loop() {
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table, err := LoadFITSTable(path)
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if err != nil {
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b.Fatal(err)
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}
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if table.Rows != rows || table.Text[0] == nil || table.Text[0][0] != "star" {
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b.Fatalf("table came back as %s with %d rows", table.Kind, table.Rows)
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}
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}
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}
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