search_bench_test.go RawHistoryFolder

1package copy
2
3import (
4	"fmt"
5	"strings"
6	"testing"
7
8	vt "github.com/bnema/vev-vt"
9	renderer "github.com/bnema/vev-vt/ansi"
10)
11
12var benchmarkMatchesSink []SearchMatch
13
14// BenchmarkFindMatches12K measures one copy-search keystroke over a full
15// default-sized scrollback (12k rows x 160 columns), with hot and idle
16// (compressed) history pages.
17func BenchmarkFindMatches12K(b *testing.B) {
18	const rows, width = 12_000, 160
19	for _, cold := range []bool{false, true} {
20		b.Run(fmt.Sprintf("cold-%v", cold), func(b *testing.B) {
21			history := vt.NewHistory(vt.HistoryConfig{MaxRows: rows, ChunkRows: 256})
22			words := strings.Fields("build test vet lint daemon client render diff pane tab session snapshot")
23			for i := range rows {
24				var line strings.Builder
25				fmt.Fprintf(&line, "line %06d", i)
26				for j := 0; line.Len() < width-12; j++ {
27					line.WriteString(" " + words[(i+j)%len(words)])
28				}
29				cells := row(line.String())
30				if err := history.Append(cells, vt.LineBound{End: len(cells)}); err != nil {
31					b.Fatal(err)
32				}
33			}
34			if cold {
35				history.SealAndView()
36				for range 2 {
37					if _, err := history.CompressIdle(rows); err != nil {
38						b.Fatal(err)
39					}
40				}
41			}
42			doc := NewDocument(NewSnapshot(history, renderer.NewFrame(width, 45), nil, nil), "")
43			b.ReportAllocs()
44			for b.Loop() {
45				benchmarkMatchesSink = FindMatches(doc, "snapsh")
46			}
47			if len(benchmarkMatchesSink) == 0 {
48				b.Fatal("expected matches")
49			}
50		})
51	}
52}