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package xml // import "github.com/tdewolff/parse/xml"
import (
"bytes"
"fmt"
"io"
"testing"
"github.com/tdewolff/parse"
"github.com/tdewolff/test"
)
type TTs []TokenType
func TestTokens(t *testing.T) {
var tokenTests = []struct {
xml string
expected []TokenType
}{
{"", TTs{}},
{"<!-- comment -->", TTs{CommentToken}},
{"<!-- comment \n multi \r line -->", TTs{CommentToken}},
{"<foo/>", TTs{StartTagToken, StartTagCloseVoidToken}},
{"<foo \t\r\n/>", TTs{StartTagToken, StartTagCloseVoidToken}},
{"<foo:bar.qux-norf/>", TTs{StartTagToken, StartTagCloseVoidToken}},
{"<foo></foo>", TTs{StartTagToken, StartTagCloseToken, EndTagToken}},
{"<foo>text</foo>", TTs{StartTagToken, StartTagCloseToken, TextToken, EndTagToken}},
{"<foo/> text", TTs{StartTagToken, StartTagCloseVoidToken, TextToken}},
{"<a> <b> <c>text</c> </b> </a>", TTs{StartTagToken, StartTagCloseToken, TextToken, StartTagToken, StartTagCloseToken, TextToken, StartTagToken, StartTagCloseToken, TextToken, EndTagToken, TextToken, EndTagToken, TextToken, EndTagToken}},
{"<foo a='a' b=\"b\" c=c/>", TTs{StartTagToken, AttributeToken, AttributeToken, AttributeToken, StartTagCloseVoidToken}},
{"<foo a=\"\"/>", TTs{StartTagToken, AttributeToken, StartTagCloseVoidToken}},
{"<foo a-b=\"\"/>", TTs{StartTagToken, AttributeToken, StartTagCloseVoidToken}},
{"<foo \nchecked \r\n value\r=\t'=/>\"' />", TTs{StartTagToken, AttributeToken, AttributeToken, StartTagCloseVoidToken}},
{"<?xml?>", TTs{StartTagPIToken, StartTagClosePIToken}},
{"<?xml a=\"a\" ?>", TTs{StartTagPIToken, AttributeToken, StartTagClosePIToken}},
{"<?xml a=a?>", TTs{StartTagPIToken, AttributeToken, StartTagClosePIToken}},
{"<![CDATA[ test ]]>", TTs{CDATAToken}},
{"<!DOCTYPE>", TTs{DOCTYPEToken}},
{"<!DOCTYPE note SYSTEM \"Note.dtd\">", TTs{DOCTYPEToken}},
{`<!DOCTYPE note [<!ENTITY nbsp " "><!ENTITY writer "Writer: Donald Duck."><!ENTITY copyright "Copyright:]> W3Schools.">]>`, TTs{DOCTYPEToken}},
{"<!foo>", TTs{StartTagToken, StartTagCloseToken}},
// early endings
{"<!-- comment", TTs{CommentToken}},
{"<foo", TTs{StartTagToken}},
{"</foo", TTs{EndTagToken}},
{"<foo x", TTs{StartTagToken, AttributeToken}},
{"<foo x=", TTs{StartTagToken, AttributeToken}},
{"<foo x='", TTs{StartTagToken, AttributeToken}},
{"<foo x=''", TTs{StartTagToken, AttributeToken}},
{"<?xml", TTs{StartTagPIToken}},
{"<![CDATA[ test", TTs{CDATAToken}},
{"<!DOCTYPE note SYSTEM", TTs{DOCTYPEToken}},
// go fuzz
{"</", TTs{EndTagToken}},
{"</\n", TTs{EndTagToken}},
}
for _, tt := range tokenTests {
t.Run(tt.xml, func(t *testing.T) {
l := NewLexer(bytes.NewBufferString(tt.xml))
i := 0
for {
token, _ := l.Next()
if token == ErrorToken {
test.T(t, l.Err(), io.EOF)
test.T(t, i, len(tt.expected), "when error occurred we must be at the end")
break
}
test.That(t, i < len(tt.expected), "index", i, "must not exceed expected token types size", len(tt.expected))
if i < len(tt.expected) {
test.T(t, token, tt.expected[i], "token types must match")
}
i++
}
})
}
test.T(t, TokenType(100).String(), "Invalid(100)")
}
func TestTags(t *testing.T) {
var tagTests = []struct {
xml string
expected string
}{
{"<foo:bar.qux-norf/>", "foo:bar.qux-norf"},
{"<?xml?>", "xml"},
{"<foo?bar/qux>", "foo?bar/qux"},
{"<!DOCTYPE note SYSTEM \"Note.dtd\">", " note SYSTEM \"Note.dtd\""},
// early endings
{"<foo ", "foo"},
}
for _, tt := range tagTests {
t.Run(tt.xml, func(t *testing.T) {
l := NewLexer(bytes.NewBufferString(tt.xml))
for {
token, _ := l.Next()
if token == ErrorToken {
test.T(t, l.Err(), io.EOF)
test.Fail(t, "when error occurred we must be at the end")
break
} else if token == StartTagToken || token == StartTagPIToken || token == EndTagToken || token == DOCTYPEToken {
test.String(t, string(l.Text()), tt.expected, "tags must match")
break
}
}
})
}
}
func TestAttributes(t *testing.T) {
var attributeTests = []struct {
attr string
expected []string
}{
{"<foo a=\"b\" />", []string{"a", "\"b\""}},
{"<foo \nchecked \r\n value\r=\t'=/>\"' />", []string{"checked", "", "value", "'=/>\"'"}},
{"<foo bar=\" a \n\t\r b \" />", []string{"bar", "\" a b \""}},
{"<?xml a=b?>", []string{"a", "b"}},
{"<foo /=? >", []string{"/", "?"}},
// early endings
{"<foo x", []string{"x", ""}},
{"<foo x=", []string{"x", ""}},
{"<foo x='", []string{"x", "'"}},
}
for _, tt := range attributeTests {
t.Run(tt.attr, func(t *testing.T) {
l := NewLexer(bytes.NewBufferString(tt.attr))
i := 0
for {
token, _ := l.Next()
if token == ErrorToken {
test.T(t, l.Err(), io.EOF)
test.T(t, i, len(tt.expected), "when error occurred we must be at the end")
break
} else if token == AttributeToken {
test.That(t, i+1 < len(tt.expected), "index", i+1, "must not exceed expected attributes size", len(tt.expected))
if i+1 < len(tt.expected) {
test.String(t, string(l.Text()), tt.expected[i], "attribute keys must match")
test.String(t, string(l.AttrVal()), tt.expected[i+1], "attribute keys must match")
i += 2
}
}
}
})
}
}
func TestErrors(t *testing.T) {
var errorTests = []struct {
xml string
col int
}{
{"a\x00b", 2},
{"<a\x00>", 3},
}
for _, tt := range errorTests {
t.Run(tt.xml, func(t *testing.T) {
l := NewLexer(bytes.NewBufferString(tt.xml))
for {
token, _ := l.Next()
if token == ErrorToken {
if tt.col == 0 {
test.T(t, l.Err(), io.EOF)
} else if perr, ok := l.Err().(*parse.Error); ok {
_, col, _ := perr.Position()
test.T(t, col, tt.col)
} else {
test.Fail(t, "bad error:", l.Err())
}
break
}
}
})
}
}
////////////////////////////////////////////////////////////////
func ExampleNewLexer() {
l := NewLexer(bytes.NewBufferString("<span class='user'>John Doe</span>"))
out := ""
for {
tt, data := l.Next()
if tt == ErrorToken {
break
}
out += string(data)
}
fmt.Println(out)
// Output: <span class='user'>John Doe</span>
}
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