hugo/resources/page/pagination_test.go

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// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package page
import (
"fmt"
"html/template"
"testing"
"github.com/spf13/viper"
"github.com/gohugoio/hugo/output"
"github.com/stretchr/testify/require"
)
func TestSplitPages(t *testing.T) {
t.Parallel()
pages := createTestPages(21)
chunks := splitPages(pages, 5)
require.Equal(t, 5, len(chunks))
for i := 0; i < 4; i++ {
require.Equal(t, 5, chunks[i].Len())
}
lastChunk := chunks[4]
require.Equal(t, 1, lastChunk.Len())
}
func TestSplitPageGroups(t *testing.T) {
t.Parallel()
pages := createTestPages(21)
groups, _ := pages.GroupBy("Weight", "desc")
chunks := splitPageGroups(groups, 5)
require.Equal(t, 5, len(chunks))
firstChunk := chunks[0]
// alternate weight 5 and 10
if groups, ok := firstChunk.(PagesGroup); ok {
require.Equal(t, 5, groups.Len())
for _, pg := range groups {
// first group 10 in weight
require.Equal(t, 10, pg.Key)
for _, p := range pg.Pages {
require.True(t, p.FuzzyWordCount()%2 == 0) // magic test
}
}
} else {
t.Fatal("Excepted PageGroup")
}
lastChunk := chunks[4]
if groups, ok := lastChunk.(PagesGroup); ok {
require.Equal(t, 1, groups.Len())
for _, pg := range groups {
// last should have 5 in weight
require.Equal(t, 5, pg.Key)
for _, p := range pg.Pages {
require.True(t, p.FuzzyWordCount()%2 != 0) // magic test
}
}
} else {
t.Fatal("Excepted PageGroup")
}
}
func TestPager(t *testing.T) {
t.Parallel()
pages := createTestPages(21)
groups, _ := pages.GroupBy("Weight", "desc")
urlFactory := func(page int) string {
return fmt.Sprintf("page/%d/", page)
}
_, err := newPaginatorFromPages(pages, -1, urlFactory)
require.NotNil(t, err)
_, err = newPaginatorFromPageGroups(groups, -1, urlFactory)
require.NotNil(t, err)
pag, err := newPaginatorFromPages(pages, 5, urlFactory)
require.Nil(t, err)
doTestPages(t, pag)
first := pag.Pagers()[0].First()
require.Equal(t, "Pager 1", first.String())
require.NotEmpty(t, first.Pages())
require.Empty(t, first.PageGroups())
pag, err = newPaginatorFromPageGroups(groups, 5, urlFactory)
require.Nil(t, err)
doTestPages(t, pag)
first = pag.Pagers()[0].First()
require.NotEmpty(t, first.PageGroups())
require.Empty(t, first.Pages())
}
func doTestPages(t *testing.T, paginator *Paginator) {
paginatorPages := paginator.Pagers()
require.Equal(t, 5, len(paginatorPages))
require.Equal(t, 21, paginator.TotalNumberOfElements())
require.Equal(t, 5, paginator.PageSize())
require.Equal(t, 5, paginator.TotalPages())
first := paginatorPages[0]
require.Equal(t, template.HTML("page/1/"), first.URL())
require.Equal(t, first, first.First())
require.True(t, first.HasNext())
require.Equal(t, paginatorPages[1], first.Next())
require.False(t, first.HasPrev())
require.Nil(t, first.Prev())
require.Equal(t, 5, first.NumberOfElements())
require.Equal(t, 1, first.PageNumber())
third := paginatorPages[2]
require.True(t, third.HasNext())
require.True(t, third.HasPrev())
require.Equal(t, paginatorPages[1], third.Prev())
last := paginatorPages[4]
require.Equal(t, template.HTML("page/5/"), last.URL())
require.Equal(t, last, last.Last())
require.False(t, last.HasNext())
require.Nil(t, last.Next())
require.True(t, last.HasPrev())
require.Equal(t, 1, last.NumberOfElements())
require.Equal(t, 5, last.PageNumber())
}
func TestPagerNoPages(t *testing.T) {
t.Parallel()
pages := createTestPages(0)
groups, _ := pages.GroupBy("Weight", "desc")
urlFactory := func(page int) string {
return fmt.Sprintf("page/%d/", page)
}
paginator, _ := newPaginatorFromPages(pages, 5, urlFactory)
doTestPagerNoPages(t, paginator)
first := paginator.Pagers()[0].First()
require.Empty(t, first.PageGroups())
require.Empty(t, first.Pages())
paginator, _ = newPaginatorFromPageGroups(groups, 5, urlFactory)
doTestPagerNoPages(t, paginator)
first = paginator.Pagers()[0].First()
require.Empty(t, first.PageGroups())
require.Empty(t, first.Pages())
}
func doTestPagerNoPages(t *testing.T, paginator *Paginator) {
paginatorPages := paginator.Pagers()
require.Equal(t, 1, len(paginatorPages))
require.Equal(t, 0, paginator.TotalNumberOfElements())
require.Equal(t, 5, paginator.PageSize())
require.Equal(t, 0, paginator.TotalPages())
// pageOne should be nothing but the first
pageOne := paginatorPages[0]
require.NotNil(t, pageOne.First())
require.False(t, pageOne.HasNext())
require.False(t, pageOne.HasPrev())
require.Nil(t, pageOne.Next())
require.Equal(t, 1, len(pageOne.Pagers()))
require.Equal(t, 0, pageOne.Pages().Len())
require.Equal(t, 0, pageOne.NumberOfElements())
require.Equal(t, 0, pageOne.TotalNumberOfElements())
require.Equal(t, 0, pageOne.TotalPages())
require.Equal(t, 1, pageOne.PageNumber())
require.Equal(t, 5, pageOne.PageSize())
}
func TestPaginationURLFactory(t *testing.T) {
t.Parallel()
cfg := viper.New()
cfg.Set("paginatePath", "zoo")
for _, uglyURLs := range []bool{false, true} {
t.Run(fmt.Sprintf("uglyURLs=%t", uglyURLs), func(t *testing.T) {
tests := []struct {
name string
d TargetPathDescriptor
baseURL string
page int
expected string
expectedUgly string
}{
{"HTML home page 32",
TargetPathDescriptor{Kind: KindHome, Type: output.HTMLFormat}, "http://example.com/", 32, "/zoo/32/", "/zoo/32.html"},
{"JSON home page 42",
TargetPathDescriptor{Kind: KindHome, Type: output.JSONFormat}, "http://example.com/", 42, "/zoo/42/index.json", "/zoo/42.json"},
}
for _, test := range tests {
d := test.d
cfg.Set("baseURL", test.baseURL)
cfg.Set("uglyURLs", uglyURLs)
d.UglyURLs = uglyURLs
pathSpec := newTestPathSpecFor(cfg)
d.PathSpec = pathSpec
factory := newPaginationURLFactory(d)
got := factory(test.page)
if uglyURLs {
require.Equal(t, test.expectedUgly, got)
} else {
require.Equal(t, test.expected, got)
}
}
})
}
}
func TestProbablyEqualPageLists(t *testing.T) {
t.Parallel()
fivePages := createTestPages(5)
zeroPages := createTestPages(0)
zeroPagesByWeight, _ := createTestPages(0).GroupBy("Weight", "asc")
fivePagesByWeight, _ := createTestPages(5).GroupBy("Weight", "asc")
ninePagesByWeight, _ := createTestPages(9).GroupBy("Weight", "asc")
for i, this := range []struct {
v1 interface{}
v2 interface{}
expect bool
}{
{nil, nil, true},
{"a", "b", true},
{"a", fivePages, false},
{fivePages, "a", false},
{fivePages, createTestPages(2), false},
{fivePages, fivePages, true},
{zeroPages, zeroPages, true},
{fivePagesByWeight, fivePagesByWeight, true},
{zeroPagesByWeight, fivePagesByWeight, false},
{zeroPagesByWeight, zeroPagesByWeight, true},
{fivePagesByWeight, fivePages, false},
{fivePagesByWeight, ninePagesByWeight, false},
} {
result := probablyEqualPageLists(this.v1, this.v2)
if result != this.expect {
t.Errorf("[%d] got %t but expected %t", i, result, this.expect)
}
}
}
func TestPaginationPage(t *testing.T) {
t.Parallel()
urlFactory := func(page int) string {
return fmt.Sprintf("page/%d/", page)
}
fivePages := createTestPages(7)
fivePagesFuzzyWordCount, _ := createTestPages(7).GroupBy("FuzzyWordCount", "asc")
p1, _ := newPaginatorFromPages(fivePages, 2, urlFactory)
p2, _ := newPaginatorFromPageGroups(fivePagesFuzzyWordCount, 2, urlFactory)
f1 := p1.pagers[0].First()
f2 := p2.pagers[0].First()
page11, _ := f1.page(1)
page1Nil, _ := f1.page(3)
page21, _ := f2.page(1)
page2Nil, _ := f2.page(3)
require.Equal(t, 3, page11.FuzzyWordCount())
require.Nil(t, page1Nil)
require.NotNil(t, page21)
require.Equal(t, 3, page21.FuzzyWordCount())
require.Nil(t, page2Nil)
}