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node_test.go
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package xmlquery
import (
"encoding/xml"
"html"
"reflect"
"strings"
"testing"
)
func findRoot(n *Node) *Node {
if n == nil {
return nil
}
for ; n.Parent != nil; n = n.Parent {
}
return n
}
func findNode(root *Node, name string) *Node {
node := root.FirstChild
for {
if node == nil || node.Data == name {
break
}
node = node.NextSibling
}
return node
}
func childNodes(root *Node, name string) []*Node {
var list []*Node
node := root.FirstChild
for {
if node == nil {
break
}
if node.Data == name {
list = append(list, node)
}
node = node.NextSibling
}
return list
}
func testNode(t *testing.T, n *Node, expected string) {
if n.Data != expected {
t.Fatalf("expected node name is %s,but got %s", expected, n.Data)
}
}
func testAttr(t *testing.T, n *Node, name, expected string) {
for _, attr := range n.Attr {
if attr.Name.Local == name && attr.Value == expected {
return
}
}
t.Fatalf("not found attribute %s in the node %s", name, n.Data)
}
func testValue(t *testing.T, val, expected interface{}) {
if val == expected {
return
}
if reflect.DeepEqual(val, expected) {
return
}
t.Fatalf("expected value is %+v, but got %+v", expected, val)
}
func testTrue(t *testing.T, v bool) {
if v {
return
}
t.Fatal("expected value is true, but got false")
}
// Given a *Node, verify that all the pointers (parent, first child, next sibling, etc.) of
// - the node itself,
// - all its child nodes, and
// - pointers along the silbling chain
// are valid.
func verifyNodePointers(t *testing.T, n *Node) {
if n == nil {
return
}
if n.FirstChild != nil {
testValue(t, n, n.FirstChild.Parent)
}
if n.LastChild != nil {
testValue(t, n, n.LastChild.Parent)
}
verifyNodePointers(t, n.FirstChild)
// There is no need to call verifyNodePointers(t, n.LastChild)
// because verifyNodePointers(t, n.FirstChild) will traverse all its
// siblings to the end, and if the last one isn't n.LastChild then it will fail.
parent := n.Parent // parent could be nil if n is the root of a tree.
// Verify the PrevSibling chain
cur, prev := n, n.PrevSibling
for ; prev != nil; cur, prev = prev, prev.PrevSibling {
testValue(t, prev.Parent, parent)
testValue(t, prev.NextSibling, cur)
}
testTrue(t, cur.PrevSibling == nil)
testTrue(t, parent == nil || parent.FirstChild == cur)
// Verify the NextSibling chain
cur, next := n, n.NextSibling
for ; next != nil; cur, next = next, next.NextSibling {
testValue(t, next.Parent, parent)
testValue(t, next.PrevSibling, cur)
}
testTrue(t, cur.NextSibling == nil)
testTrue(t, parent == nil || parent.LastChild == cur)
}
func TestChildNodes(t *testing.T) {
t.Run("Has 3 children", func(t *testing.T) {
node := &Node{Type: ElementNode}
AddChild(node, &Node{Type: CommentNode})
AddChild(node, &Node{Type: ElementNode})
AddChild(node, &Node{Type: TextNode})
children := node.ChildNodes()
testTrue(t, len(children) == 3)
})
}
func TestAddAttr(t *testing.T) {
for _, test := range []struct {
name string
n *Node
key string
val string
expected string
ok bool
}{
{
name: "node has no existing attr",
n: &Node{Type: AttributeNode},
key: "ns:k1",
val: "v1",
expected: `< ns:k1="v1"></>`,
ok: true,
},
{
name: "node has existing attrs",
n: &Node{Type: AttributeNode, Attr: []Attr{{Name: xml.Name{Local: "k1"}, Value: "v1"}}},
key: "k2",
val: "v2",
expected: `< k1="v1" k2="v2"></>`,
ok: true,
},
{
name: "node already has existing attr",
n: &Node{Type: AttributeNode, Attr: []Attr{{Name: xml.Name{Local: "k1"}, Value: "v1"}}},
key: "k1",
val: "v1",
expected: `< k1="v1"></>`,
ok: false,
},
} {
t.Run(test.name, func(t *testing.T) {
ok := AddAttr(test.n, test.key, test.val)
testTrue(t, ok == test.ok)
testValue(t, test.n.OutputXML(true), test.expected)
})
}
}
func TestSetAttr(t *testing.T) {
for _, test := range []struct {
name string
n *Node
key string
val string
expected string
ok bool
}{
{
name: "node has no existing attr",
n: &Node{Type: AttributeNode},
key: "ns:k1",
val: "v1",
expected: `< ns:k1="v1"></>`,
ok: true,
},
{
name: "node has an existing attr, overwriting",
n: &Node{Type: AttributeNode, Attr: []Attr{{Name: xml.Name{Space: "ns", Local: "k1"}, Value: "v1"}}},
key: "ns:k1",
val: "v2",
expected: `< ns:k1="v2"></>`,
ok: true,
},
{
name: "node has no existing attr, no ns",
n: &Node{Type: AttributeNode},
key: "k1",
val: "v1",
expected: `< k1="v1"></>`,
ok: true,
},
{
name: "node has an existing attr, no ns, overwriting",
n: &Node{Type: AttributeNode, Attr: []Attr{{Name: xml.Name{Local: "k1"}, Value: "v1"}}},
key: "k1",
val: "v2",
expected: `< k1="v2"></>`,
ok: true,
},
} {
t.Run(test.name, func(t *testing.T) {
ok := test.n.SetAttr(test.key, test.val)
testTrue(t, ok == test.ok)
testValue(t, test.n.OutputXML(true), test.expected)
})
}
}
func TestRemoveAttr(t *testing.T) {
for _, test := range []struct {
name string
n *Node
key string
expected string
ok bool
}{
{
name: "node has no existing attr",
n: &Node{Type: AttributeNode},
key: "ns:k1",
expected: `<></>`,
ok: false,
},
{
name: "node has an existing attr, overwriting",
n: &Node{Type: AttributeNode, Attr: []Attr{{Name: xml.Name{Space: "ns", Local: "k1"}, Value: "v1"}}},
key: "ns:k1",
expected: `<></>`,
ok: true,
},
{
name: "node has no existing attr, no ns",
n: &Node{Type: AttributeNode},
key: "k1",
expected: `<></>`,
ok: false,
},
{
name: "node has an existing attr, no ns, overwriting",
n: &Node{Type: AttributeNode, Attr: []Attr{{Name: xml.Name{Local: "k1"}, Value: "v1"}}},
key: "k1",
expected: `<></>`,
ok: true,
},
} {
t.Run(test.name, func(t *testing.T) {
ok := test.n.RemoveAttr(test.key)
testTrue(t, ok == test.ok)
testValue(t, test.n.OutputXML(true), test.expected)
})
}
}
func TestRemoveFromTree(t *testing.T) {
xmlStr := `<?procinst?>
<!--comment-->
<aaa><bbb/>
<ddd><eee><fff/></eee></ddd>
<ggg/></aaa>`
parseXML := func() *Node {
doc, err := Parse(strings.NewReader(xmlStr))
testTrue(t, err == nil)
return doc
}
t.Run("remove an elem node that is the only child of its parent", func(t *testing.T) {
doc := parseXML()
n := FindOne(doc, "//aaa/ddd/eee")
testTrue(t, n != nil)
RemoveFromTree(n)
verifyNodePointers(t, doc)
testValue(t, doc.OutputXMLWithOptions(WithoutPreserveSpace()),
`<?procinst?><!--comment--><aaa><bbb></bbb><ddd></ddd><ggg></ggg></aaa>`)
})
t.Run("remove an elem node that is the first but not the last child of its parent", func(t *testing.T) {
doc := parseXML()
n := FindOne(doc, "//aaa/bbb")
testTrue(t, n != nil)
RemoveFromTree(n)
verifyNodePointers(t, doc)
testValue(t, doc.OutputXMLWithOptions(WithoutPreserveSpace()),
`<?procinst?><!--comment--><aaa><ddd><eee><fff></fff></eee></ddd><ggg></ggg></aaa>`)
})
t.Run("remove an elem node that is neither the first nor the last child of its parent", func(t *testing.T) {
doc := parseXML()
n := FindOne(doc, "//aaa/ddd")
testTrue(t, n != nil)
RemoveFromTree(n)
verifyNodePointers(t, doc)
testValue(t, doc.OutputXMLWithOptions(WithoutPreserveSpace()),
`<?procinst?><!--comment--><aaa><bbb></bbb><ggg></ggg></aaa>`)
})
t.Run("remove an elem node that is the last but not the first child of its parent", func(t *testing.T) {
doc := parseXML()
n := FindOne(doc, "//aaa/ggg")
testTrue(t, n != nil)
RemoveFromTree(n)
verifyNodePointers(t, doc)
testValue(t, doc.OutputXMLWithOptions(WithoutPreserveSpace()),
`<?procinst?><!--comment--><aaa><bbb></bbb><ddd><eee><fff></fff></eee></ddd></aaa>`)
})
t.Run("remove decl node works", func(t *testing.T) {
doc := parseXML()
procInst := doc.FirstChild
testValue(t, procInst.Type, ProcessingInstruction)
RemoveFromTree(procInst)
verifyNodePointers(t, doc)
testValue(t, doc.OutputXMLWithOptions(WithoutPreserveSpace()),
`<!--comment--><aaa><bbb></bbb><ddd><eee><fff></fff></eee></ddd><ggg></ggg></aaa>`)
})
t.Run("remove comment node works", func(t *testing.T) {
doc := parseXML()
commentNode := doc.FirstChild.NextSibling.NextSibling // First .NextSibling is an empty text node.
testValue(t, commentNode.Type, CommentNode)
RemoveFromTree(commentNode)
verifyNodePointers(t, doc)
testValue(t, doc.OutputXMLWithOptions(WithoutPreserveSpace()),
`<?procinst?><aaa><bbb></bbb><ddd><eee><fff></fff></eee></ddd><ggg></ggg></aaa>`)
})
t.Run("remove call on root does nothing", func(t *testing.T) {
doc := parseXML()
RemoveFromTree(doc)
verifyNodePointers(t, doc)
testValue(t, doc.OutputXMLWithOptions(WithoutPreserveSpace()),
`<?procinst?><!--comment--><aaa><bbb></bbb><ddd><eee><fff></fff></eee></ddd><ggg></ggg></aaa>`)
})
}
func TestAddImmediateSibling(t *testing.T) {
s := `<?xml version="1.0" encoding="UTF-8"?>
<AAA>
<BBB id="1"/>
<CCC id="2">
<DDD/>
</CCC>
<CCC id="3">
<DDD/>
</CCC>
</AAA>`
root, err := Parse(strings.NewReader(s))
if err != nil {
t.Error(err)
}
aaa := findNode(root, "AAA")
n := aaa.SelectElement("BBB")
if n == nil {
t.Fatalf("n is nil")
}
AddImmediateSibling(n, &Node{Type: ElementNode, Data: "r"})
testValue(t, root.OutputXMLWithOptions(WithoutPreserveSpace()), `<?xml version="1.0" encoding="UTF-8"?><AAA><BBB id="1"></BBB><r></r><CCC id="2"><DDD></DDD></CCC><CCC id="3"><DDD></DDD></CCC></AAA>`)
}
func TestSelectElement(t *testing.T) {
s := `<?xml version="1.0" encoding="UTF-8"?>
<AAA>
<BBB id="1"/>
<CCC id="2">
<DDD/>
</CCC>
<CCC id="3">
<DDD/>
</CCC>
</AAA>`
root, err := Parse(strings.NewReader(s))
if err != nil {
t.Error(err)
}
version := root.FirstChild.SelectAttr("version")
if version != "1.0" {
t.Fatal("version!=1.0")
}
aaa := findNode(root, "AAA")
var n *Node
n = aaa.SelectElement("BBB")
if n == nil {
t.Fatalf("n is nil")
}
n = aaa.SelectElement("CCC")
if n == nil {
t.Fatalf("n is nil")
}
ns := aaa.SelectElements("CCC")
if len(ns) != 2 {
t.Fatalf("len(ns)!=2")
}
}
func TestEscapeOutputValue(t *testing.T) {
data := `<AAA><*></AAA>`
root, err := Parse(strings.NewReader(data))
if err != nil {
t.Error(err)
}
escapedInnerText := root.OutputXML(true)
if !strings.Contains(escapedInnerText, "<*>") {
t.Fatal("Inner Text has not been escaped")
}
}
func TestEscapeValueWrite(t *testing.T) {
data := `<AAA><*></AAA>`
root, err := Parse(strings.NewReader(data))
if err != nil {
t.Error(err)
}
var b strings.Builder
err = root.Write(&b, true)
testTrue(t, err == nil)
escapedInnerText := b.String()
if !strings.Contains(escapedInnerText, "<*>") {
t.Fatal("Inner Text has not been escaped")
}
}
func TestUnnecessaryEscapeOutputValue(t *testing.T) {
data := `<?xml version="1.0" encoding="utf-8"?>
<class_list xml:space="preserve">
<student>
<name> Robert </name>
<grade>A+</grade>
</student>
</class_list>`
root, err := Parse(strings.NewReader(data))
if err != nil {
t.Error(err)
}
escapedInnerText := root.OutputXML(true)
if strings.Contains(escapedInnerText, "	") {
t.Fatal("\\n has been escaped unnecessarily")
}
if strings.Contains(escapedInnerText, "
") {
t.Fatal("\\t has been escaped unnecessarily")
}
}
func TestUnnecessaryEscapeValueWrite(t *testing.T) {
data := `<?xml version="1.0" encoding="utf-8"?>
<class_list xml:space="preserve">
<student>
<name> Robert </name>
<grade>A+</grade>
</student>
</class_list>`
root, err := Parse(strings.NewReader(data))
if err != nil {
t.Error(err)
}
var b strings.Builder
err = root.Write(&b, true)
testTrue(t, err == nil)
escapedInnerText := b.String()
if strings.Contains(escapedInnerText, "	") {
t.Fatal("\\n has been escaped unnecessarily")
}
if strings.Contains(escapedInnerText, "
") {
t.Fatal("\\t has been escaped unnecessarily")
}
}
func TestHtmlUnescapeStringOriginString(t *testing.T) {
// has escape html character and \t
data := `<?xml version="1.0" encoding="utf-8"?>
<example xml:space="preserve"><word>&#48; </word></example>`
root, err := Parse(strings.NewReader(data))
if err != nil {
t.Error(err)
}
escapedInnerText := root.OutputXML(false)
unescapeString := html.UnescapeString(escapedInnerText)
if strings.Contains(unescapeString, "&") {
t.Fatal("& need unescape")
}
if !strings.Contains(escapedInnerText, "&#48;\t\t") {
t.Fatal("Inner Text should keep plain text")
}
}
func TestHtmlUnescapeStringOriginStringWrite(t *testing.T) {
// has escape html character and \t
data := `<?xml version="1.0" encoding="utf-8"?>
<example xml:space="preserve"><word>&#48; </word></example>`
root, err := Parse(strings.NewReader(data))
if err != nil {
t.Error(err)
}
var b strings.Builder
err = root.Write(&b, false)
testTrue(t, err == nil)
escapedInnerText := b.String()
unescapeString := html.UnescapeString(escapedInnerText)
if strings.Contains(unescapeString, "&") {
t.Fatal("& need unescape")
}
if !strings.Contains(escapedInnerText, "&#48;\t\t") {
t.Fatal("Inner Text should keep plain text")
}
}
func TestOutputXMLWithNamespacePrefix(t *testing.T) {
s := `<?xml version="1.0" encoding="UTF-8"?><S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"><S:Body></S:Body></S:Envelope>`
doc, _ := Parse(strings.NewReader(s))
if s != doc.OutputXML(false) {
t.Fatal("xml document missing some characters")
}
}
func TestWriteWithNamespacePrefix(t *testing.T) {
s := `<?xml version="1.0" encoding="UTF-8"?><S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"><S:Body></S:Body></S:Envelope>`
doc, _ := Parse(strings.NewReader(s))
var b strings.Builder
err := doc.Write(&b, false)
testTrue(t, err == nil)
if s != b.String() {
t.Fatal("xml document missing some characters")
}
}
func TestQueryWithPrefix(t *testing.T) {
s := `<?xml version="1.0" encoding="UTF-8"?><S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"><S:Body test="1"><ns2:Fault xmlns:ns2="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns3="http://www.w3.org/2003/05/soap-envelope"><faultcode>ns2:Client</faultcode><faultstring>This is a client fault</faultstring></ns2:Fault></S:Body></S:Envelope>`
doc, _ := Parse(strings.NewReader(s))
n, err := Query(doc, `//S:Envelope/S:Body/ns2:Fault/faultcode`)
if err != nil {
t.Fatal(err)
}
if n == nil {
t.Fatalf("should found one but got nil")
}
if expected, v := "ns2:Client", n.InnerText(); expected != v {
t.Fatalf("expected %s but got %s", expected, v)
}
}
func TestOutputXMLWithCommentNode(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?>
<!-- Students grades are updated bi-monthly -->
<class_list>
<student>
<name>Robert</name>
<grade>A+</grade>
</student>
<!--
<student>
<name>Lenard</name>
<grade>A-</grade>
</student>
-->
</class_list>`
doc, _ := Parse(strings.NewReader(s))
t.Log(doc.OutputXML(true))
if e, g := "<!-- Students grades are updated bi-monthly -->", doc.OutputXML(true); !strings.Contains(g, e) {
t.Fatal("missing some comment-node.")
}
n := FindOne(doc, "//class_list")
t.Log(n.OutputXML(false))
if e, g := "<name>Lenard</name>", n.OutputXML(false); !strings.Contains(g, e) {
t.Fatal("missing some comment-node")
}
}
func TestOutputXMLWithSpaceParent(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?>
<class_list>
<student xml:space="preserve">
<name> Robert </name>
<grade>A+</grade>
</student>
</class_list>`
doc, _ := Parse(strings.NewReader(s))
t.Log(doc.OutputXML(true))
expected := "<name> Robert </name>"
if g := doc.OutputXML(true); !strings.Contains(g, expected) {
t.Errorf(`expected "%s", obtained "%s"`, expected, g)
}
n := FindOne(doc, "/class_list/student")
output := html.UnescapeString(n.OutputXML(false))
expected = "\n\t\t\t<name> Robert </name>\n\t\t\t<grade>A+</grade>\n\t\t"
if !(output == expected) {
t.Errorf(`expected "%s", obtained "%s"`, expected, output)
}
t.Log(n.OutputXML(false))
}
func TestOutputXMLWithSpaceDirect(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?>
<class_list>
<student>
<name xml:space="preserve"> Robert </name>
<grade>A+</grade>
</student>
</class_list>`
doc, _ := Parse(strings.NewReader(s))
t.Log(doc.OutputXML(true))
n := FindOne(doc, "/class_list/student/name")
expected := `<name xml:space="preserve"> Robert </name>`
if g := doc.OutputXML(false); !strings.Contains(g, expected) {
t.Errorf(`expected "%s", obtained "%s"`, expected, g)
}
output := html.UnescapeString(doc.OutputXMLWithOptions(WithOutputSelf(), WithoutPreserveSpace()))
if strings.Contains(output, "\n") {
t.Errorf("the outputted xml contains newlines")
}
t.Log(n.OutputXML(false))
}
func TestOutputXMLWithSpaceOverwrittenToPreserve(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?>
<class_list>
<student xml:space="default">
<name xml:space="preserve"> Robert </name>
<grade>A+</grade>
</student>
</class_list>`
doc, _ := Parse(strings.NewReader(s))
t.Log(doc.OutputXML(true))
n := FindOne(doc, "/class_list/student")
expected := `<name xml:space="preserve"> Robert </name>`
if g := n.OutputXML(false); !strings.Contains(g, expected) {
t.Errorf(`expected "%s", obtained "%s"`, expected, g)
}
output := html.UnescapeString(doc.OutputXMLWithOptions(WithOutputSelf(), WithoutPreserveSpace()))
if strings.Contains(output, "\n") {
t.Errorf("the outputted xml contains newlines")
}
t.Log(n.OutputXML(false))
}
func TestOutputXMLWithSpaceOverwrittenToDefault(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?>
<class_list>
<student xml:space="preserve">
<name xml:space="default"> Robert </name>
<grade>A+</grade>
</student>
</class_list>`
doc, _ := Parse(strings.NewReader(s))
t.Log(doc.OutputXML(true))
expected := `<name xml:space="default">Robert</name>`
if g := doc.OutputXML(false); !strings.Contains(g, expected) {
t.Errorf(`expected "%s", obtained "%s"`, expected, g)
}
n := FindOne(doc, "/class_list/student")
output := html.UnescapeString(n.OutputXML(false))
expected = "\n\t\t\t<name xml:space=\"default\">Robert</name>\n\t\t\t<grade>A+</grade>\n\t\t"
if !(output == expected) {
t.Errorf(`expected "%s", obtained "%s"`, expected, output)
}
t.Log(n.OutputXML(false))
}
func TestOutputXMLWithXMLInCDATA(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?><node><![CDATA[<greeting>Hello, world!</greeting>]]></node>`
doc, _ := Parse(strings.NewReader(s))
t.Log(doc.OutputXML(false))
if doc.OutputXML(false) != s {
t.Errorf("the outputted xml escaped CDATA section")
}
}
func TestOutputXMLWithDefaultOptions(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?><node><empty></empty></node>`
expected := `<?xml version="1.0" encoding="utf-8"?><node><empty></empty></node>`
doc, _ := Parse(strings.NewReader(s))
result := doc.OutputXMLWithOptions()
t.Log(result)
if result != expected {
t.Errorf("output was not expected. expected %v but got %v", expected, result)
}
}
func TestOutputXMLWithOptions(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?><node><empty></empty></node>`
expected := `<?xml version="1.0" encoding="utf-8"?><node><empty/></node>`
doc, _ := Parse(strings.NewReader(s))
result := doc.OutputXMLWithOptions(WithEmptyTagSupport())
t.Log(result)
if result != expected {
t.Errorf("output was not expected. expected %v but got %v", expected, result)
}
}
func TestOutputXMLWithPreserveSpaceOption(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?>
<class_list>
<student>
<name> Robert </name>
<grade>A+</grade>
</student>
</class_list>`
doc, _ := Parse(strings.NewReader(s))
resultWithSpace := doc.OutputXMLWithOptions()
resultWithoutSpace := doc.OutputXMLWithOptions(WithoutPreserveSpace())
if !strings.Contains(resultWithSpace, "> Robert <") {
t.Errorf("output was not expected. expected %v but got %v", " Robert ", resultWithSpace)
}
if !strings.Contains(resultWithoutSpace, ">Robert<") {
t.Errorf("output was not expected. expected %v but got %v", " Robert ", resultWithoutSpace)
}
}
func TestOutputXMLWithIndentation(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?><xml><outerTag><tagWithValue>123</tagWithValue></outerTag></xml>`
expected := `<?xml version="1.0" encoding="utf-8"?>
<xml>
<outerTag>
<tagWithValue>123</tagWithValue>
</outerTag>
</xml>`
doc, _ := Parse(strings.NewReader(s))
resultWithIndent := doc.OutputXMLWithOptions(WithIndentation(" "))
if resultWithIndent != expected {
t.Errorf("output was not expected. expected %v but got %v", expected, resultWithIndent)
}
}
func TestNodeLevel(t *testing.T) {
s := `<?xml version="1.0" encoding="utf-8"?>
<class_list>
<student>
<name xml:space="preserve"> Robert </name>
<grade>A+</grade>
</student>
</class_list>`
doc, _ := Parse(strings.NewReader(s))
if doc.Level() != 0 {
t.Errorf(`expected "%d", obtained "%d"`, 0, doc.Level())
}
n := FindOne(doc, "/class_list")
if n.Level() != 1 {
t.Errorf(`expected "%d", obtained "%d"`, 1, n.Level())
}
n = FindOne(doc, "/class_list/student/name")
if n.Level() != 3 {
t.Errorf(`expected "%d", obtained "%d"`, 3, n.Level())
}
}
func TestDirectiveNode(t *testing.T) {
expected := `<!DOCTYPE people_list SYSTEM "example.dtd">`
n := &Node{Data: `DOCTYPE people_list SYSTEM "example.dtd"`, Type: NotationNode}
if v := n.OutputXML(true); expected != v {
t.Errorf(`expected "%s", obtained "%s"`, expected, v)
}
}
func TestOutputXMLWithSingleQuotes(t *testing.T) {
s := `<?xml version='1.0' encoding='utf-8'?><a><b c='d'></b></a>`
expected := `<?xml version="1.0" encoding="utf-8"?><a><b c="d"></b></a>`
doc, _ := Parse(strings.NewReader(s))
output := doc.OutputXML(false)
if expected != output {
t.Errorf(`expected "%s", obtained "%s"`, expected, output)
}
}
func TestProcessingInstruction(t *testing.T) {
xml := `<?ProcInstTag random string ?><?AnotherProcInst a="b"?><a/>`
doc, err := Parse(strings.NewReader(xml))
if err != nil {
t.Fatalf("Parse failed: %v", err)
}
firstNode := doc.FirstChild
if firstNode.Type != ProcessingInstruction {
t.Errorf("First node type should be ProcessingInstruction, got %d", firstNode.Type)
}
piNode := FindOne(doc, "//ProcInstTag")
if piNode == nil {
t.Fatal("FindOne should be find one, but got nil")
}
if piNode.ProcInst == nil {
t.Fatal("ProcInstData is nil")
}
if piNode.ProcInst.Target != "ProcInstTag" {
t.Errorf("ProcInstData.Target mismatch: expected 'ProcInstTag', got '%s'", piNode.ProcInst.Target)
}
if piNode.ProcInst.Inst != "random string" {
t.Errorf("ProcInstData.Inst mismatch: expected 'random string', got '%s'", piNode.ProcInst.Inst)
}
output := doc.OutputXML(true)
expected := `<?ProcInstTag random string?><?AnotherProcInst a="b"?><a></a>`
if output != expected {
t.Errorf("Output mismatch:\nExpected: %s\nGot: %s", expected, output)
}
}