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htmlutil_test.go
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htmlutil_test.go
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/*
Copyright 2019 Joseph Cumines
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 htmlutil
import (
"bytes"
"fmt"
"github.com/go-test/deep"
"golang.org/x/net/html"
"io"
"strings"
"testing"
)
func parse(s string, filters ...func(node Node) bool) Node {
v, err := Parse(strings.NewReader(s), filters...)
if err != nil {
panic(err)
}
return v
}
func parseElement(s string) Node {
return parse(
s,
func(node Node) bool {
return node.Data.Type == html.ElementNode && node.Data.Data == "body"
},
func(node Node) bool {
return node.Data.Type == html.ElementNode
},
)
}
func TestFilterNodes(t *testing.T) {
type TestCase struct {
Input string
Filters []func(node Node) bool
Output []string
}
testCases := []TestCase{
{
Input: "<img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/>",
Filters: []func(node Node) bool{},
Output: []string{
`<html><head></head><body><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></body></html>`,
},
},
{
Input: "<img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/>",
Filters: []func(node Node) bool{nil},
Output: []string{
`<html><head></head><body><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></body></html>`,
},
},
{
Input: "<img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/>",
Filters: []func(node Node) bool{
func(node Node) bool {
return node.Data.Type == html.ElementNode
},
},
Output: []string{
`<html><head></head><body><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></body></html>`,
`<head></head>`,
`<body><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></body>`,
`<img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/>`,
},
},
{
Input: "<img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/>",
Filters: []func(node Node) bool{
func(node Node) bool {
if node.Data.Data != "head" && node.Data.Data != "body" {
return false
}
return true
},
},
Output: []string{
`<head></head>`,
`<body><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></body>`,
},
},
{
Input: "<div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"top level\"/><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"further nested\"/></div></div><div class=\"one\"></div><div class=\"two\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/></div><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"final\"/></div>",
Filters: []func(node Node) bool{
nil,
func(node Node) bool {
if node.Data.Type != html.ElementNode {
return false
}
if node.Data.Data != "div" {
return false
}
if getAttrVal("", "class", node.Data.Attr...) != "one" {
return false
}
return true
},
nil,
nil,
func(node Node) bool {
if node.Data.Type != html.ElementNode {
return false
}
if node.Data.Data != "img" {
return false
}
return true
},
nil,
},
Output: []string{
`<img class="iconClass1" src="/images/icon_1.png" alt="top level"/>`,
`<img class="iconClass1" src="/images/icon_1.png" alt="further nested"/>`,
`<img class="iconClass1" src="/images/icon_1.png" alt="final"/>`,
},
},
{
Input: "<div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"top level\"/><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"further nested\"/></div></div><div class=\"one\"></div><div class=\"two\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/></div><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"final\"/></div>",
Filters: []func(node Node) bool{
func(node Node) bool {
if node.Data.Type != html.ElementNode {
return false
}
if _, ok := getAttr("", "class", node.Data.Attr...); ok {
return false
}
return true
},
},
Output: []string{
`<html><head></head><body><div class="one"><img class="iconClass1" src="/images/icon_1.png" alt="top level"/><div class="one"><img class="iconClass1" src="/images/icon_1.png" alt="further nested"/></div></div><div class="one"></div><div class="two"><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></div><div class="one"><img class="iconClass1" src="/images/icon_1.png" alt="final"/></div></body></html>`,
`<head></head>`,
`<body><div class="one"><img class="iconClass1" src="/images/icon_1.png" alt="top level"/><div class="one"><img class="iconClass1" src="/images/icon_1.png" alt="further nested"/></div></div><div class="one"></div><div class="two"><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></div><div class="one"><img class="iconClass1" src="/images/icon_1.png" alt="final"/></div></body>`,
},
},
}
for i, testCase := range testCases {
name := fmt.Sprintf("FilterNodes_#%d", i+1)
input, err := html.Parse(bytes.NewReader([]byte(testCase.Input)))
if err != nil {
t.Fatal(name, err)
}
var output []string
for i, v := range filterNodesRaw(input, testCase.Filters...) {
buffer := new(bytes.Buffer)
if err := html.Render(buffer, v.Data); err != nil {
t.Fatal(name, i, err)
}
output = append(output, buffer.String())
}
if diff := deep.Equal(
output,
testCase.Output,
); diff != nil {
t.Error(strings.Join(append([]string{name + " output diff:"}, diff...), " \n"))
}
}
}
func TestFindNode(t *testing.T) {
type TestCase struct {
Input string
Filters []func(node Node) bool
Output []string
}
testCases := []TestCase{
{
Input: "<img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/>",
Filters: []func(node Node) bool{},
Output: []string{
`<html><head></head><body><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></body></html>`,
},
},
{
Input: "<img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/>",
Filters: []func(node Node) bool{nil},
Output: []string{
`<html><head></head><body><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></body></html>`,
},
},
{
Input: "<img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/>",
Filters: []func(node Node) bool{
func(node Node) bool {
return node.Data.Type == html.ElementNode
},
},
Output: []string{
`<html><head></head><body><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></body></html>`,
},
},
{
Input: "<img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/>",
Filters: []func(node Node) bool{
func(node Node) bool {
if node.Data.Data != "head" && node.Data.Data != "body" {
return false
}
return true
},
},
Output: []string{
`<head></head>`,
},
},
{
Input: "<div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"top level\"/><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"further nested\"/></div></div><div class=\"one\"></div><div class=\"two\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/></div><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"final\"/></div>",
Filters: []func(node Node) bool{
nil,
func(node Node) bool {
if node.Data.Type != html.ElementNode {
return false
}
if node.Data.Data != "div" {
return false
}
if getAttrVal("", "class", node.Data.Attr...) != "one" {
return false
}
return true
},
nil,
nil,
func(node Node) bool {
if node.Data.Type != html.ElementNode {
return false
}
if node.Data.Data != "img" {
return false
}
return true
},
nil,
},
Output: []string{
`<img class="iconClass1" src="/images/icon_1.png" alt="top level"/>`,
},
},
{
Input: "<div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"top level\"/><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"further nested\"/></div></div><div class=\"one\"></div><div class=\"two\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/></div><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"final\"/></div>",
Filters: []func(node Node) bool{
func(node Node) bool {
if node.Data.Type != html.ElementNode {
return false
}
if _, ok := getAttr("", "class", node.Data.Attr...); ok {
return false
}
return true
},
},
Output: []string{
`<html><head></head><body><div class="one"><img class="iconClass1" src="/images/icon_1.png" alt="top level"/><div class="one"><img class="iconClass1" src="/images/icon_1.png" alt="further nested"/></div></div><div class="one"></div><div class="two"><img class="iconClass1" src="/images/icon_1.png" alt="Some Alt Text"/></div><div class="one"><img class="iconClass1" src="/images/icon_1.png" alt="final"/></div></body></html>`,
},
},
{
Input: "<div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"top level\"/><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"further nested\"/></div></div><div class=\"one\"></div><div class=\"two\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"Some Alt Text\"/></div><div class=\"one\"><img class=\"iconClass1\" src=\"/images/icon_1.png\" alt=\"final\"/></div>",
Filters: []func(node Node) bool{
func(node Node) bool {
return false
},
},
Output: nil,
},
}
for i, testCase := range testCases {
name := fmt.Sprintf("FindNode_#%d", i+1)
input, err := html.Parse(bytes.NewReader([]byte(testCase.Input)))
if err != nil {
t.Fatal(name, err)
}
var output []string
if v, ok := findNodeRaw(input, testCase.Filters...); ok {
buffer := new(bytes.Buffer)
if err := html.Render(buffer, v.Data); err != nil {
t.Fatal(name, i, err)
}
output = append(output, buffer.String())
}
if diff := deep.Equal(
len(output),
len(
(filterConfig{
Node: Node{Data: input},
Filters: testCase.Filters,
Find: true,
}).filter(),
),
); diff != nil {
t.Error(strings.Join(append([]string{name + " find len diff:"}, diff...), " \n"))
}
if diff := deep.Equal(
output,
testCase.Output,
); diff != nil {
t.Error(strings.Join(append([]string{name + " output diff:"}, diff...), " \n"))
}
}
}
func TestFilterNodes_nil(t *testing.T) {
if v := filterNodesRaw(nil); v != nil {
t.Fatal(v)
}
}
func TestEncodeHTML_nil(t *testing.T) {
if v := encodeHTML(nil); v != "" {
t.Fatal(v)
}
}
func TestEncodeHTML_panic(t *testing.T) {
defer func() {
if v := fmt.Sprint(recover()); v != "html: cannot render an ErrorNode node" {
t.Fatal(v)
}
}()
if v := encodeHTML(new(html.Node)); v != "" {
t.Fatal(v)
}
}
func TestEncodeText_nil(t *testing.T) {
if v := encodeText(nil); v != nil {
t.Fatal(v)
}
}
func TestEncodeWords_nil(t *testing.T) {
if v := encodeWords(nil); v != nil {
t.Fatal(v)
}
}
func TestEncodeWords_siblings(t *testing.T) {
node, err := Parse(strings.NewReader(`<div>one</div><div>two</div><div><div><div></div></div></div><div></div><div><div></div><div>three</div></div><div>four</div>`))
if err != nil {
t.Fatal(err)
}
if v := string(encodeWords(node.Data)); v != `one two three four` {
t.Error(v)
}
}
func TestParse_eof(t *testing.T) {
reader, _ := io.Pipe()
_ = reader.Close()
if _, err := Parse(reader); err == nil || err.Error() != "io: read/write on closed pipe" {
t.Fatal(err)
}
}
func TestParse_notFound(t *testing.T) {
_, err := Parse(
strings.NewReader(`<div></div>`),
func(node Node) bool {
return false
},
)
if err == nil || err.Error() != "htmlutil.Parse no match" {
t.Fatal(err)
}
}
func TestGetNode_nil(t *testing.T) {
if v := getNodeRaw(nil); v != (Node{}) {
t.Error(v)
}
}
func TestGetNode_success(t *testing.T) {
if v := getNodeRaw(
parse(`<div><a>b</a><b>a</b></div>`).Data,
func(node Node) bool {
return node.Tag() == `b`
},
).OuterHTML(); v != `<b>a</b>` {
t.Error(v)
}
}
func TestNode_InnerHTML(t *testing.T) {
input := `<div>
<div><div>ONE</div><div>TWO</div></div><div>
THREE
</div>FOUR !
</div>`
node, err := Parse(
strings.NewReader(input),
func(node Node) bool {
return node.Data.Type == html.ElementNode && node.Data.Data == "div"
},
)
if err != nil {
t.Fatal(err)
}
if v := node.InnerHTML(); v != `
<div><div>ONE</div><div>TWO</div></div><div>
THREE
</div>FOUR !
` {
t.Fatal(v)
}
if v := node.InnerText(); v != `
ONETWO
THREE
FOUR !
` {
t.Fatal(v)
}
if v := node.InnerWords(); v != `ONE TWO THREE FOUR !` {
t.Fatal(v)
}
if v := node.InnerWords(func(node Node) bool {
return node.Offset() == 0 &&
node.Type() == html.TextNode
}); v != `FOUR !` {
t.Fatal(v)
}
if v := node.InnerWords(func(node Node) bool {
return node.Offset() == 100
}); v != `` {
t.Fatal(v)
}
}
func TestNode_GetAttr_caseInsensitive(t *testing.T) {
node := parseElement(`<div one="value_1" TWO="VALUE_2"></div>`)
if diff := deep.Equal(node.GetAttrVal(``, `one`), `value_1`); diff != nil {
t.Error(strings.Join(append([]string{"lowercase via lowercase diff:"}, diff...), " \n"))
}
if diff := deep.Equal(node.GetAttrVal(``, `ONE`), `value_1`); diff != nil {
t.Error(strings.Join(append([]string{"lowercase via uppercase diff:"}, diff...), " \n"))
}
if diff := deep.Equal(node.GetAttrVal(``, `tWo`), `VALUE_2`); diff != nil {
t.Error(strings.Join(append([]string{"uppercase via mixed diff:"}, diff...), " \n"))
}
}
func TestNode_GetAttr_foreign(t *testing.T) {
node := parseElement(`<svg viewBox="0 0 100 100" xlink:href="#icon-1" not="value"></svg>`)
if diff := deep.Equal(node.GetAttrVal(`xlink`, `href`), `#icon-1`); diff != nil {
t.Error(strings.Join(append([]string{"match diff:"}, diff...), " \n"))
}
if diff := deep.Equal(node.GetAttrVal(`XLINK`, `href`), ``); diff != nil {
t.Error(strings.Join(append([]string{"upper namespace diff:"}, diff...), " \n"))
}
if diff := deep.Equal(node.GetAttrVal(`xlink`, `HREF`), ``); diff != nil {
t.Error(strings.Join(append([]string{"upper key diff:"}, diff...), " \n"))
}
if diff := deep.Equal(node.GetAttrVal(``, `href`), ``); diff != nil {
t.Error(strings.Join(append([]string{"empty namespace diff:"}, diff...), " \n"))
}
}
func TestNode_FilterNodes_depth(t *testing.T) {
nodes := parse(
`<div>
<div a="1">one</div>
<div a="2">two</div><div a="3">
three
<div a="4">four</div>
</div>
<div a="5">five<div a="6">six</div></div></div>`,
).
FilterNodes(
func(node Node) bool {
return node.Tag() == "div" && node.GetAttrVal(``, `a`) == ""
},
func(node Node) bool {
return node.Type() == html.ElementNode && node.Offset() == 2
},
)
if len(nodes) != 2 {
t.Fatal(len(nodes))
}
if v := nodes[0].Depth; v != 5 {
t.Error(v)
}
if v := nodes[0].Offset(); v != 2 {
t.Error(v)
}
if v := nodes[0].Match; v == nil {
t.Error(v)
} else {
if v := v.Depth; v != 3 {
t.Error(v)
}
if v := v.Offset(); v != 3 {
t.Error(v)
}
if v := v.Match; v == nil || v.Data == nil {
t.Error("expected initial matches to always be set for nodes with data")
} else if v.Data.Type != html.DocumentNode {
t.Fatal(v.Data.Type)
} else if v.Match != nil {
t.Error("expected the final match to be without unnecessary dupes")
}
if a := nodes[0].Parent().Parent(); a.Data == nil || a.Match != v || a.Match == v.Match {
t.Error(a.Data)
} else {
if v := a.LastChild(); v.Depth != 4 {
t.Error(v)
} else if v.Match != a.Match {
t.Error(v)
} else if v := v.OuterHTML(); v != `<div a="5">five<div a="6">six</div></div>` {
t.Error(v)
}
a.Match = v.Match
if a != *v {
t.Error(a, "||||||", *v)
}
}
}
if v := nodes[0].Parent().PrevSibling(); v.Data == nil || v.Depth != 4 {
t.Error(v)
} else {
if v := v.OuterHTML(); v != `<div a="2">two</div>` {
t.Error(v)
}
}
if v, ok := nodes[0].GetAttr(``, `A`); !ok || v.Val != "4" {
t.Error(v, ok)
}
if v := nodes[0].Parent(); v.Data == nil {
t.Error(v)
} else {
if v := v.GetAttrVal(``, `A`); v != "3" {
t.Error(v)
}
if v := v.Depth; v != 4 {
t.Error(v)
}
}
if v := nodes[0].OuterHTML(); v != `<div a="4">four</div>` {
t.Error(v)
}
if v := nodes[1].OuterHTML(); v != `<div a="6">six</div>` {
t.Error(v)
}
}
func TestNode_Type_nil(t *testing.T) {
var n Node
if v := n.Type(); v != 0 {
t.Fatal(v)
}
}
func TestNode_Attr_nil(t *testing.T) {
var n Node
if v := n.Attr(); v != nil {
t.Fatal(v)
}
}
func TestNode_FindNode_success(t *testing.T) {
n, ok := parse(`<a><b></b><b><c id="search"></c></b><d><e></e><f><g></g></f></d></a>`).
FindNode(
func(node Node) bool {
return node.GetAttrVal(``, `id`) == "search"
},
)
if !ok || n.String() != `<c id="search"></c>` {
t.Fatal(n, ok)
}
// parent filter test because lazy
if n.Depth != 5 {
t.Error(n.Depth)
} else {
if v := n.Parent(); v.Data == nil || v.Depth != 4 || v.OuterHTML() != `<b><c id="search"></c></b>` {
t.Error(v.Data, v.Depth, v.OuterHTML())
}
if v := n.Parent(nil, nil, nil, nil, nil, nil, nil, nil, nil, nil); v.Data == nil || v.Depth != 4 || v.OuterHTML() != `<b><c id="search"></c></b>` {
t.Error(v.Data, v.Depth, v.OuterHTML())
}
if v := n.Parent(
func(node Node) bool {
return true
},
); v.Data == nil || v.Depth != 4 || v.OuterHTML() != `<b><c id="search"></c></b>` {
t.Error(v.Data, v.Depth, v.OuterHTML())
}
if v := n.Parent(
nil,
nil,
nil,
func(node Node) bool {
return node.Tag() == `b`
},
); v.Data == nil || v.Depth != 4 || v.OuterHTML() != `<b><c id="search"></c></b>` {
t.Error(v.Data, v.Depth, v.OuterHTML())
}
if v := n.Parent(
nil,
nil,
nil,
func(node Node) bool {
return node.Tag() == `body`
},
); v.Data == nil || v.Depth != 2 || v.OuterHTML() != `<body><a><b></b><b><c id="search"></c></b><d><e></e><f><g></g></f></d></a></body>` {
t.Error(v.Data, v.Depth, v.OuterHTML())
}
}
// sibling index and sibling length tests because lazy
if v := n.SiblingIndex(); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(); v != 1 {
t.Error(v)
}
if n := n.Parent(); n.Data == nil {
t.Fatal(n)
} else {
// unfiltered values
if v := n.SiblingIndex(); v != 1 {
t.Error(v)
}
if v := n.SiblingLength(); v != 3 {
t.Error(v)
}
// filtered values - use find on each node
// - match on the current case (nested)
if v := n.SiblingIndex(
func(node Node) bool {
return node.GetAttrVal(``, `id`) == "search"
},
); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(
func(node Node) bool {
return node.GetAttrVal(``, `id`) == "search"
},
); v != 1 {
t.Error(v)
}
// - match on this and the previous sibling
if v := n.SiblingIndex(
func(node Node) bool {
return node.Tag() == `b`
},
); v != 1 {
t.Error(v)
}
if v := n.SiblingLength(
func(node Node) bool {
return node.Tag() == `b`
},
); v != 2 {
t.Error(v)
}
// - match on the last sibling, but includes this node as well
if v := n.SiblingIndex(
func(node Node) bool {
return node.Tag() == `d`
},
); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(
func(node Node) bool {
return node.Tag() == `d`
},
); v != 2 {
t.Error(v)
}
// - no match, but the current node gets included in the length
if v := n.SiblingIndex(
func(node Node) bool {
return false
},
); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(
func(node Node) bool {
return false
},
); v != 1 {
t.Error(v)
}
// - nested match
if v := n.SiblingIndex(
func(node Node) bool {
return node.Tag() == `b`
},
func(node Node) bool {
return node.Tag() == `c`
},
); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(
func(node Node) bool {
return node.Tag() == `b`
},
func(node Node) bool {
return node.Tag() == `c`
},
); v != 1 {
t.Error(v)
}
if n := n.PrevSibling(); n.Data == nil {
t.Fatal(n)
} else {
if v := n.SiblingIndex(); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(); v != 3 {
t.Error(v)
}
if n := n.PrevSibling(); n.Data != nil {
t.Fatal(n)
} else {
if v := n.SiblingIndex(); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(); v != 0 {
t.Error(v)
}
}
}
if n := n.NextSibling(); n.Data == nil {
t.Fatal(n)
} else {
// unfiltered values
if v := n.SiblingIndex(); v != 2 {
t.Error(v)
}
if v := n.SiblingLength(); v != 3 {
t.Error(v)
}
// filtered values - use find on each node
// - match + current node
if v := n.SiblingIndex(
func(node Node) bool {
return node.GetAttrVal(``, `id`) == "search"
},
); v != 1 {
t.Error(v)
}
if v := n.SiblingLength(
func(node Node) bool {
return node.GetAttrVal(``, `id`) == "search"
},
); v != 2 {
t.Error(v)
}
// - again miss-match example
if v := n.SiblingIndex(
func(node Node) bool {
return node.Tag() == `b`
},
); v != 2 {
t.Error(v)
}
if v := n.SiblingLength(
func(node Node) bool {
return node.Tag() == `b`
},
); v != 3 {
t.Error(v)
}
// - nested mis-match example
if v := n.SiblingIndex(
func(node Node) bool {
return node.Tag() == `b`
},
func(node Node) bool {
return node.Tag() == `c`
},
); v != 1 {
t.Error(v)
}
if v := n.SiblingLength(
func(node Node) bool {
return node.Tag() == `b`
},
func(node Node) bool {
return node.Tag() == `c`
},
); v != 2 {
t.Error(v)
}
if n := n.FirstChild(); n.Data == nil {
t.Fatal(n)
} else {
if v := n.SiblingIndex(); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(); v != 2 {
t.Error(v)
}
}
if n := n.NextSibling(); n.Data != nil {
t.Fatal(n)
} else {
if v := n.SiblingIndex(); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(); v != 0 {
t.Error(v)
}
}
}
if n := n.Parent(); n.Data == nil {
t.Fatal(n)
} else {
if v := n.SiblingIndex(); v != 0 {
t.Error(v)
}
if v := n.SiblingLength(); v != 1 {
t.Error(v)
}
}
}
}
func TestNode_Children(t *testing.T) {
nodes := parseElement(`<a><b></b> <b><c id="search"></c></b></a>`).Children()
if v := len(nodes); v != 3 {
t.Fatal(v)
}
if v := nodes[0].Type(); v != html.ElementNode {
t.Fatal(v)
}
if v := nodes[0].OuterHTML(); v != `<b></b>` {
t.Fatal(v)
}
if v := nodes[1].Type(); v != html.TextNode {
t.Fatal(v)
}
if v := nodes[1].OuterHTML(); v != ` ` {
t.Fatal(v)
}
if v := nodes[2].Type(); v != html.ElementNode {
t.Fatal(v)
}
if v := nodes[2].OuterHTML(); v != `<b><c id="search"></c></b>` {
t.Fatal(v)
}
}
func TestNode_Children_nil(t *testing.T) {
var n Node
if v := n.Children(); v != nil {
t.Fatal(v)
}
}
func TestNode_GetNode_nil(t *testing.T) {
if v := (Node{Depth: 1}).GetNode(); v != (Node{}) {
t.Error(v)
}
}
func TestNode_GetNode_success(t *testing.T) {
if v := parse(`<div><a>b</a><b>a</b></div>`).
GetNode(
func(node Node) bool {
return node.Tag() == `b`
},
).OuterHTML(); v != `<b>a</b>` {
t.Error(v)
}
}
func TestNode_FindNode_nilNoMatchSet(t *testing.T) {
n, ok := (Node{}).FindNode()
if ok || n.Match != nil {
t.Fatal(n, ok)
}
}
func TestNode_Range_panic(t *testing.T) {
defer func() {
if r := fmt.Sprint(recover()); r != "htmlutil.Node.Range nil fn" {
t.Fatal(r)
}
}()
var n Node
n.Range(nil)
}
func TestNode_Range_bailOutTrue(t *testing.T) {
var (
node = parseElement(`<div><a>1</a><b>2</b><c>3</c></div>`)
index int
values []string
)
node.Range(
func(i int, node Node) bool {
values = append(values, node.OuterHTML())
if i != index {
t.Fatal(i, index)
}
index++
return index != 2
},
)
if diff := deep.Equal(
index,
2,
); diff != nil {
t.Error(strings.Join(append([]string{"index diff:"}, diff...), " \n"))
}
if diff := deep.Equal(
values,
[]string{
`<a>1</a>`,
`<b>2</b>`,
},
); diff != nil {
t.Error(strings.Join(append([]string{"values diff:"}, diff...), " \n"))
}
}
func TestNode_Range_bailOutFalse(t *testing.T) {
var (
node = parseElement(`<div><a>1</a><b>2</b><c>3</c></div>`)
index int
values []string
)
node.Range(
func(i int, node Node) bool {
values = append(values, node.OuterHTML())
if i != index {
t.Fatal(i, index)
}
index++
return true
},
)
if diff := deep.Equal(
index,
3,
); diff != nil {
t.Error(strings.Join(append([]string{"index diff:"}, diff...), " \n"))
}
if diff := deep.Equal(
values,
[]string{
`<a>1</a>`,
`<b>2</b>`,
`<c>3</c>`,
},
); diff != nil {
t.Error(strings.Join(append([]string{"values diff:"}, diff...), " \n"))
}
}
func TestNode_Parent_none(t *testing.T) {
node := parse(`<a></a>`)
if node.Depth != 0 {