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package hugolib
import (
"fmt"
"math/rand"
"testing"
"github.com/gohugoio/hugo/resources/page"
qt "github.com/frankban/quicktest"
)
func newPagesPrevNextTestSite(t testing.TB, numPages int) *sitesBuilder {
pageTemplate := `
---
title: "Page %d"
weight: %d
---
`
b := newTestSitesBuilder(t)
for i := 1; i <= numPages; i++ {
b.WithContent(fmt.Sprintf("page%d.md", i), fmt.Sprintf(pageTemplate, i, rand.Intn(numPages)))
}
return b
}
func TestPagesPrevNext(t *testing.T) {
b := newPagesPrevNextTestSite(t, 100)
b.Build(BuildCfg{SkipRender: true})
pages := b.H.Sites[0].RegularPages()
b.Assert(pages, qt.HasLen, 100)
for _, p := range pages {
msg := qt.Commentf("w=%d", p.Weight())
b.Assert(pages.Next(p), qt.Equals, p.Next(), msg)
b.Assert(pages.Prev(p), qt.Equals, p.Prev(), msg)
}
}
func BenchmarkPagesPrevNext(b *testing.B) {
type Variant struct {
name string
preparePages func(pages page.Pages) page.Pages
run func(p page.Page, pages page.Pages)
}
shufflePages := func(pages page.Pages) page.Pages {
rand.Shuffle(len(pages), func(i, j int) { pages[i], pages[j] = pages[j], pages[i] })
return pages
}
for _, variant := range []Variant{
Variant{".Next", nil, func(p page.Page, pages page.Pages) { p.Next() }},
Variant{".Prev", nil, func(p page.Page, pages page.Pages) { p.Prev() }},
Variant{"Pages.Next", nil, func(p page.Page, pages page.Pages) { pages.Next(p) }},
Variant{"Pages.Prev", nil, func(p page.Page, pages page.Pages) { pages.Prev(p) }},
Variant{"Pages.Shuffled.Next", shufflePages, func(p page.Page, pages page.Pages) { pages.Next(p) }},
Variant{"Pages.Shuffled.Prev", shufflePages, func(p page.Page, pages page.Pages) { pages.Prev(p) }},
Variant{"Pages.ByTitle.Next", func(pages page.Pages) page.Pages { return pages.ByTitle() }, func(p page.Page, pages page.Pages) { pages.Next(p) }},
} {
for _, numPages := range []int{300, 5000} {
b.Run(fmt.Sprintf("%s-pages-%d", variant.name, numPages), func(b *testing.B) {
b.StopTimer()
builder := newPagesPrevNextTestSite(b, numPages)
builder.Build(BuildCfg{SkipRender: true})
pages := builder.H.Sites[0].RegularPages()
if variant.preparePages != nil {
pages = variant.preparePages(pages)
}
b.StartTimer()
for i := 0; i < b.N; i++ {
p := pages[rand.Intn(len(pages))]
variant.run(p, pages)
}
})
}
}
}
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