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dex/vendor/golang.org/x/net/webdav/xml_test.go
2016-07-26 15:51:24 -07:00

907 lines
25 KiB
Go

// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package webdav
import (
"bytes"
"encoding/xml"
"fmt"
"io"
"net/http"
"net/http/httptest"
"reflect"
"sort"
"strings"
"testing"
ixml "golang.org/x/net/webdav/internal/xml"
)
func TestReadLockInfo(t *testing.T) {
// The "section x.y.z" test cases come from section x.y.z of the spec at
// http://www.webdav.org/specs/rfc4918.html
testCases := []struct {
desc string
input string
wantLI lockInfo
wantStatus int
}{{
"bad: junk",
"xxx",
lockInfo{},
http.StatusBadRequest,
}, {
"bad: invalid owner XML",
"" +
"<D:lockinfo xmlns:D='DAV:'>\n" +
" <D:lockscope><D:exclusive/></D:lockscope>\n" +
" <D:locktype><D:write/></D:locktype>\n" +
" <D:owner>\n" +
" <D:href> no end tag \n" +
" </D:owner>\n" +
"</D:lockinfo>",
lockInfo{},
http.StatusBadRequest,
}, {
"bad: invalid UTF-8",
"" +
"<D:lockinfo xmlns:D='DAV:'>\n" +
" <D:lockscope><D:exclusive/></D:lockscope>\n" +
" <D:locktype><D:write/></D:locktype>\n" +
" <D:owner>\n" +
" <D:href> \xff </D:href>\n" +
" </D:owner>\n" +
"</D:lockinfo>",
lockInfo{},
http.StatusBadRequest,
}, {
"bad: unfinished XML #1",
"" +
"<D:lockinfo xmlns:D='DAV:'>\n" +
" <D:lockscope><D:exclusive/></D:lockscope>\n" +
" <D:locktype><D:write/></D:locktype>\n",
lockInfo{},
http.StatusBadRequest,
}, {
"bad: unfinished XML #2",
"" +
"<D:lockinfo xmlns:D='DAV:'>\n" +
" <D:lockscope><D:exclusive/></D:lockscope>\n" +
" <D:locktype><D:write/></D:locktype>\n" +
" <D:owner>\n",
lockInfo{},
http.StatusBadRequest,
}, {
"good: empty",
"",
lockInfo{},
0,
}, {
"good: plain-text owner",
"" +
"<D:lockinfo xmlns:D='DAV:'>\n" +
" <D:lockscope><D:exclusive/></D:lockscope>\n" +
" <D:locktype><D:write/></D:locktype>\n" +
" <D:owner>gopher</D:owner>\n" +
"</D:lockinfo>",
lockInfo{
XMLName: ixml.Name{Space: "DAV:", Local: "lockinfo"},
Exclusive: new(struct{}),
Write: new(struct{}),
Owner: owner{
InnerXML: "gopher",
},
},
0,
}, {
"section 9.10.7",
"" +
"<D:lockinfo xmlns:D='DAV:'>\n" +
" <D:lockscope><D:exclusive/></D:lockscope>\n" +
" <D:locktype><D:write/></D:locktype>\n" +
" <D:owner>\n" +
" <D:href>http://example.org/~ejw/contact.html</D:href>\n" +
" </D:owner>\n" +
"</D:lockinfo>",
lockInfo{
XMLName: ixml.Name{Space: "DAV:", Local: "lockinfo"},
Exclusive: new(struct{}),
Write: new(struct{}),
Owner: owner{
InnerXML: "\n <D:href>http://example.org/~ejw/contact.html</D:href>\n ",
},
},
0,
}}
for _, tc := range testCases {
li, status, err := readLockInfo(strings.NewReader(tc.input))
if tc.wantStatus != 0 {
if err == nil {
t.Errorf("%s: got nil error, want non-nil", tc.desc)
continue
}
} else if err != nil {
t.Errorf("%s: %v", tc.desc, err)
continue
}
if !reflect.DeepEqual(li, tc.wantLI) || status != tc.wantStatus {
t.Errorf("%s:\ngot lockInfo=%v, status=%v\nwant lockInfo=%v, status=%v",
tc.desc, li, status, tc.wantLI, tc.wantStatus)
continue
}
}
}
func TestReadPropfind(t *testing.T) {
testCases := []struct {
desc string
input string
wantPF propfind
wantStatus int
}{{
desc: "propfind: propname",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:propname/>\n" +
"</A:propfind>",
wantPF: propfind{
XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
Propname: new(struct{}),
},
}, {
desc: "propfind: empty body means allprop",
input: "",
wantPF: propfind{
Allprop: new(struct{}),
},
}, {
desc: "propfind: allprop",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:allprop/>\n" +
"</A:propfind>",
wantPF: propfind{
XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
Allprop: new(struct{}),
},
}, {
desc: "propfind: allprop followed by include",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:allprop/>\n" +
" <A:include><A:displayname/></A:include>\n" +
"</A:propfind>",
wantPF: propfind{
XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
Allprop: new(struct{}),
Include: propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
},
}, {
desc: "propfind: include followed by allprop",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:include><A:displayname/></A:include>\n" +
" <A:allprop/>\n" +
"</A:propfind>",
wantPF: propfind{
XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
Allprop: new(struct{}),
Include: propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
},
}, {
desc: "propfind: propfind",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop><A:displayname/></A:prop>\n" +
"</A:propfind>",
wantPF: propfind{
XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
Prop: propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
},
}, {
desc: "propfind: prop with ignored comments",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop>\n" +
" <!-- ignore -->\n" +
" <A:displayname><!-- ignore --></A:displayname>\n" +
" </A:prop>\n" +
"</A:propfind>",
wantPF: propfind{
XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
Prop: propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
},
}, {
desc: "propfind: propfind with ignored whitespace",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop> <A:displayname/></A:prop>\n" +
"</A:propfind>",
wantPF: propfind{
XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
Prop: propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
},
}, {
desc: "propfind: propfind with ignored mixed-content",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop>foo<A:displayname/>bar</A:prop>\n" +
"</A:propfind>",
wantPF: propfind{
XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
Prop: propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
},
}, {
desc: "propfind: propname with ignored element (section A.4)",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:propname/>\n" +
" <E:leave-out xmlns:E='E:'>*boss*</E:leave-out>\n" +
"</A:propfind>",
wantPF: propfind{
XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
Propname: new(struct{}),
},
}, {
desc: "propfind: bad: junk",
input: "xxx",
wantStatus: http.StatusBadRequest,
}, {
desc: "propfind: bad: propname and allprop (section A.3)",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:propname/>" +
" <A:allprop/>" +
"</A:propfind>",
wantStatus: http.StatusBadRequest,
}, {
desc: "propfind: bad: propname and prop",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop><A:displayname/></A:prop>\n" +
" <A:propname/>\n" +
"</A:propfind>",
wantStatus: http.StatusBadRequest,
}, {
desc: "propfind: bad: allprop and prop",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:allprop/>\n" +
" <A:prop><A:foo/><A:/prop>\n" +
"</A:propfind>",
wantStatus: http.StatusBadRequest,
}, {
desc: "propfind: bad: empty propfind with ignored element (section A.4)",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <E:expired-props/>\n" +
"</A:propfind>",
wantStatus: http.StatusBadRequest,
}, {
desc: "propfind: bad: empty prop",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop/>\n" +
"</A:propfind>",
wantStatus: http.StatusBadRequest,
}, {
desc: "propfind: bad: prop with just chardata",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop>foo</A:prop>\n" +
"</A:propfind>",
wantStatus: http.StatusBadRequest,
}, {
desc: "bad: interrupted prop",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop><A:foo></A:prop>\n",
wantStatus: http.StatusBadRequest,
}, {
desc: "bad: malformed end element prop",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop><A:foo/></A:bar></A:prop>\n",
wantStatus: http.StatusBadRequest,
}, {
desc: "propfind: bad: property with chardata value",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop><A:foo>bar</A:foo></A:prop>\n" +
"</A:propfind>",
wantStatus: http.StatusBadRequest,
}, {
desc: "propfind: bad: property with whitespace value",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:prop><A:foo> </A:foo></A:prop>\n" +
"</A:propfind>",
wantStatus: http.StatusBadRequest,
}, {
desc: "propfind: bad: include without allprop",
input: "" +
"<A:propfind xmlns:A='DAV:'>\n" +
" <A:include><A:foo/></A:include>\n" +
"</A:propfind>",
wantStatus: http.StatusBadRequest,
}}
for _, tc := range testCases {
pf, status, err := readPropfind(strings.NewReader(tc.input))
if tc.wantStatus != 0 {
if err == nil {
t.Errorf("%s: got nil error, want non-nil", tc.desc)
continue
}
} else if err != nil {
t.Errorf("%s: %v", tc.desc, err)
continue
}
if !reflect.DeepEqual(pf, tc.wantPF) || status != tc.wantStatus {
t.Errorf("%s:\ngot propfind=%v, status=%v\nwant propfind=%v, status=%v",
tc.desc, pf, status, tc.wantPF, tc.wantStatus)
continue
}
}
}
func TestMultistatusWriter(t *testing.T) {
///The "section x.y.z" test cases come from section x.y.z of the spec at
// http://www.webdav.org/specs/rfc4918.html
testCases := []struct {
desc string
responses []response
respdesc string
writeHeader bool
wantXML string
wantCode int
wantErr error
}{{
desc: "section 9.2.2 (failed dependency)",
responses: []response{{
Href: []string{"http://example.com/foo"},
Propstat: []propstat{{
Prop: []Property{{
XMLName: xml.Name{
Space: "http://ns.example.com/",
Local: "Authors",
},
}},
Status: "HTTP/1.1 424 Failed Dependency",
}, {
Prop: []Property{{
XMLName: xml.Name{
Space: "http://ns.example.com/",
Local: "Copyright-Owner",
},
}},
Status: "HTTP/1.1 409 Conflict",
}},
ResponseDescription: "Copyright Owner cannot be deleted or altered.",
}},
wantXML: `` +
`<?xml version="1.0" encoding="UTF-8"?>` +
`<multistatus xmlns="DAV:">` +
` <response>` +
` <href>http://example.com/foo</href>` +
` <propstat>` +
` <prop>` +
` <Authors xmlns="http://ns.example.com/"></Authors>` +
` </prop>` +
` <status>HTTP/1.1 424 Failed Dependency</status>` +
` </propstat>` +
` <propstat xmlns="DAV:">` +
` <prop>` +
` <Copyright-Owner xmlns="http://ns.example.com/"></Copyright-Owner>` +
` </prop>` +
` <status>HTTP/1.1 409 Conflict</status>` +
` </propstat>` +
` <responsedescription>Copyright Owner cannot be deleted or altered.</responsedescription>` +
`</response>` +
`</multistatus>`,
wantCode: StatusMulti,
}, {
desc: "section 9.6.2 (lock-token-submitted)",
responses: []response{{
Href: []string{"http://example.com/foo"},
Status: "HTTP/1.1 423 Locked",
Error: &xmlError{
InnerXML: []byte(`<lock-token-submitted xmlns="DAV:"/>`),
},
}},
wantXML: `` +
`<?xml version="1.0" encoding="UTF-8"?>` +
`<multistatus xmlns="DAV:">` +
` <response>` +
` <href>http://example.com/foo</href>` +
` <status>HTTP/1.1 423 Locked</status>` +
` <error><lock-token-submitted xmlns="DAV:"/></error>` +
` </response>` +
`</multistatus>`,
wantCode: StatusMulti,
}, {
desc: "section 9.1.3",
responses: []response{{
Href: []string{"http://example.com/foo"},
Propstat: []propstat{{
Prop: []Property{{
XMLName: xml.Name{Space: "http://ns.example.com/boxschema/", Local: "bigbox"},
InnerXML: []byte(`` +
`<BoxType xmlns="http://ns.example.com/boxschema/">` +
`Box type A` +
`</BoxType>`),
}, {
XMLName: xml.Name{Space: "http://ns.example.com/boxschema/", Local: "author"},
InnerXML: []byte(`` +
`<Name xmlns="http://ns.example.com/boxschema/">` +
`J.J. Johnson` +
`</Name>`),
}},
Status: "HTTP/1.1 200 OK",
}, {
Prop: []Property{{
XMLName: xml.Name{Space: "http://ns.example.com/boxschema/", Local: "DingALing"},
}, {
XMLName: xml.Name{Space: "http://ns.example.com/boxschema/", Local: "Random"},
}},
Status: "HTTP/1.1 403 Forbidden",
ResponseDescription: "The user does not have access to the DingALing property.",
}},
}},
respdesc: "There has been an access violation error.",
wantXML: `` +
`<?xml version="1.0" encoding="UTF-8"?>` +
`<multistatus xmlns="DAV:" xmlns:B="http://ns.example.com/boxschema/">` +
` <response>` +
` <href>http://example.com/foo</href>` +
` <propstat>` +
` <prop>` +
` <B:bigbox><B:BoxType>Box type A</B:BoxType></B:bigbox>` +
` <B:author><B:Name>J.J. Johnson</B:Name></B:author>` +
` </prop>` +
` <status>HTTP/1.1 200 OK</status>` +
` </propstat>` +
` <propstat>` +
` <prop>` +
` <B:DingALing/>` +
` <B:Random/>` +
` </prop>` +
` <status>HTTP/1.1 403 Forbidden</status>` +
` <responsedescription>The user does not have access to the DingALing property.</responsedescription>` +
` </propstat>` +
` </response>` +
` <responsedescription>There has been an access violation error.</responsedescription>` +
`</multistatus>`,
wantCode: StatusMulti,
}, {
desc: "no response written",
// default of http.responseWriter
wantCode: http.StatusOK,
}, {
desc: "no response written (with description)",
respdesc: "too bad",
// default of http.responseWriter
wantCode: http.StatusOK,
}, {
desc: "empty multistatus with header",
writeHeader: true,
wantXML: `<multistatus xmlns="DAV:"></multistatus>`,
wantCode: StatusMulti,
}, {
desc: "bad: no href",
responses: []response{{
Propstat: []propstat{{
Prop: []Property{{
XMLName: xml.Name{
Space: "http://example.com/",
Local: "foo",
},
}},
Status: "HTTP/1.1 200 OK",
}},
}},
wantErr: errInvalidResponse,
// default of http.responseWriter
wantCode: http.StatusOK,
}, {
desc: "bad: multiple hrefs and no status",
responses: []response{{
Href: []string{"http://example.com/foo", "http://example.com/bar"},
}},
wantErr: errInvalidResponse,
// default of http.responseWriter
wantCode: http.StatusOK,
}, {
desc: "bad: one href and no propstat",
responses: []response{{
Href: []string{"http://example.com/foo"},
}},
wantErr: errInvalidResponse,
// default of http.responseWriter
wantCode: http.StatusOK,
}, {
desc: "bad: status with one href and propstat",
responses: []response{{
Href: []string{"http://example.com/foo"},
Propstat: []propstat{{
Prop: []Property{{
XMLName: xml.Name{
Space: "http://example.com/",
Local: "foo",
},
}},
Status: "HTTP/1.1 200 OK",
}},
Status: "HTTP/1.1 200 OK",
}},
wantErr: errInvalidResponse,
// default of http.responseWriter
wantCode: http.StatusOK,
}, {
desc: "bad: multiple hrefs and propstat",
responses: []response{{
Href: []string{
"http://example.com/foo",
"http://example.com/bar",
},
Propstat: []propstat{{
Prop: []Property{{
XMLName: xml.Name{
Space: "http://example.com/",
Local: "foo",
},
}},
Status: "HTTP/1.1 200 OK",
}},
}},
wantErr: errInvalidResponse,
// default of http.responseWriter
wantCode: http.StatusOK,
}}
n := xmlNormalizer{omitWhitespace: true}
loop:
for _, tc := range testCases {
rec := httptest.NewRecorder()
w := multistatusWriter{w: rec, responseDescription: tc.respdesc}
if tc.writeHeader {
if err := w.writeHeader(); err != nil {
t.Errorf("%s: got writeHeader error %v, want nil", tc.desc, err)
continue
}
}
for _, r := range tc.responses {
if err := w.write(&r); err != nil {
if err != tc.wantErr {
t.Errorf("%s: got write error %v, want %v",
tc.desc, err, tc.wantErr)
}
continue loop
}
}
if err := w.close(); err != tc.wantErr {
t.Errorf("%s: got close error %v, want %v",
tc.desc, err, tc.wantErr)
continue
}
if rec.Code != tc.wantCode {
t.Errorf("%s: got HTTP status code %d, want %d\n",
tc.desc, rec.Code, tc.wantCode)
continue
}
gotXML := rec.Body.String()
eq, err := n.equalXML(strings.NewReader(gotXML), strings.NewReader(tc.wantXML))
if err != nil {
t.Errorf("%s: equalXML: %v", tc.desc, err)
continue
}
if !eq {
t.Errorf("%s: XML body\ngot %s\nwant %s", tc.desc, gotXML, tc.wantXML)
}
}
}
func TestReadProppatch(t *testing.T) {
ppStr := func(pps []Proppatch) string {
var outer []string
for _, pp := range pps {
var inner []string
for _, p := range pp.Props {
inner = append(inner, fmt.Sprintf("{XMLName: %q, Lang: %q, InnerXML: %q}",
p.XMLName, p.Lang, p.InnerXML))
}
outer = append(outer, fmt.Sprintf("{Remove: %t, Props: [%s]}",
pp.Remove, strings.Join(inner, ", ")))
}
return "[" + strings.Join(outer, ", ") + "]"
}
testCases := []struct {
desc string
input string
wantPP []Proppatch
wantStatus int
}{{
desc: "proppatch: section 9.2 (with simple property value)",
input: `` +
`<?xml version="1.0" encoding="utf-8" ?>` +
`<D:propertyupdate xmlns:D="DAV:"` +
` xmlns:Z="http://ns.example.com/z/">` +
` <D:set>` +
` <D:prop><Z:Authors>somevalue</Z:Authors></D:prop>` +
` </D:set>` +
` <D:remove>` +
` <D:prop><Z:Copyright-Owner/></D:prop>` +
` </D:remove>` +
`</D:propertyupdate>`,
wantPP: []Proppatch{{
Props: []Property{{
xml.Name{Space: "http://ns.example.com/z/", Local: "Authors"},
"",
[]byte(`somevalue`),
}},
}, {
Remove: true,
Props: []Property{{
xml.Name{Space: "http://ns.example.com/z/", Local: "Copyright-Owner"},
"",
nil,
}},
}},
}, {
desc: "proppatch: lang attribute on prop",
input: `` +
`<?xml version="1.0" encoding="utf-8" ?>` +
`<D:propertyupdate xmlns:D="DAV:">` +
` <D:set>` +
` <D:prop xml:lang="en">` +
` <foo xmlns="http://example.com/ns"/>` +
` </D:prop>` +
` </D:set>` +
`</D:propertyupdate>`,
wantPP: []Proppatch{{
Props: []Property{{
xml.Name{Space: "http://example.com/ns", Local: "foo"},
"en",
nil,
}},
}},
}, {
desc: "bad: remove with value",
input: `` +
`<?xml version="1.0" encoding="utf-8" ?>` +
`<D:propertyupdate xmlns:D="DAV:"` +
` xmlns:Z="http://ns.example.com/z/">` +
` <D:remove>` +
` <D:prop>` +
` <Z:Authors>` +
` <Z:Author>Jim Whitehead</Z:Author>` +
` </Z:Authors>` +
` </D:prop>` +
` </D:remove>` +
`</D:propertyupdate>`,
wantStatus: http.StatusBadRequest,
}, {
desc: "bad: empty propertyupdate",
input: `` +
`<?xml version="1.0" encoding="utf-8" ?>` +
`<D:propertyupdate xmlns:D="DAV:"` +
`</D:propertyupdate>`,
wantStatus: http.StatusBadRequest,
}, {
desc: "bad: empty prop",
input: `` +
`<?xml version="1.0" encoding="utf-8" ?>` +
`<D:propertyupdate xmlns:D="DAV:"` +
` xmlns:Z="http://ns.example.com/z/">` +
` <D:remove>` +
` <D:prop/>` +
` </D:remove>` +
`</D:propertyupdate>`,
wantStatus: http.StatusBadRequest,
}}
for _, tc := range testCases {
pp, status, err := readProppatch(strings.NewReader(tc.input))
if tc.wantStatus != 0 {
if err == nil {
t.Errorf("%s: got nil error, want non-nil", tc.desc)
continue
}
} else if err != nil {
t.Errorf("%s: %v", tc.desc, err)
continue
}
if status != tc.wantStatus {
t.Errorf("%s: got status %d, want %d", tc.desc, status, tc.wantStatus)
continue
}
if !reflect.DeepEqual(pp, tc.wantPP) || status != tc.wantStatus {
t.Errorf("%s: proppatch\ngot %v\nwant %v", tc.desc, ppStr(pp), ppStr(tc.wantPP))
}
}
}
func TestUnmarshalXMLValue(t *testing.T) {
testCases := []struct {
desc string
input string
wantVal string
}{{
desc: "simple char data",
input: "<root>foo</root>",
wantVal: "foo",
}, {
desc: "empty element",
input: "<root><foo/></root>",
wantVal: "<foo/>",
}, {
desc: "preserve namespace",
input: `<root><foo xmlns="bar"/></root>`,
wantVal: `<foo xmlns="bar"/>`,
}, {
desc: "preserve root element namespace",
input: `<root xmlns:bar="bar"><bar:foo/></root>`,
wantVal: `<foo xmlns="bar"/>`,
}, {
desc: "preserve whitespace",
input: "<root> \t </root>",
wantVal: " \t ",
}, {
desc: "preserve mixed content",
input: `<root xmlns="bar"> <foo>a<bam xmlns="baz"/> </foo> </root>`,
wantVal: ` <foo xmlns="bar">a<bam xmlns="baz"/> </foo> `,
}, {
desc: "section 9.2",
input: `` +
`<Z:Authors xmlns:Z="http://ns.example.com/z/">` +
` <Z:Author>Jim Whitehead</Z:Author>` +
` <Z:Author>Roy Fielding</Z:Author>` +
`</Z:Authors>`,
wantVal: `` +
` <Author xmlns="http://ns.example.com/z/">Jim Whitehead</Author>` +
` <Author xmlns="http://ns.example.com/z/">Roy Fielding</Author>`,
}, {
desc: "section 4.3.1 (mixed content)",
input: `` +
`<x:author ` +
` xmlns:x='http://example.com/ns' ` +
` xmlns:D="DAV:">` +
` <x:name>Jane Doe</x:name>` +
` <!-- Jane's contact info -->` +
` <x:uri type='email'` +
` added='2005-11-26'>mailto:jane.doe@example.com</x:uri>` +
` <x:uri type='web'` +
` added='2005-11-27'>http://www.example.com</x:uri>` +
` <x:notes xmlns:h='http://www.w3.org/1999/xhtml'>` +
` Jane has been working way <h:em>too</h:em> long on the` +
` long-awaited revision of <![CDATA[<RFC2518>]]>.` +
` </x:notes>` +
`</x:author>`,
wantVal: `` +
` <name xmlns="http://example.com/ns">Jane Doe</name>` +
` ` +
` <uri type='email'` +
` xmlns="http://example.com/ns" ` +
` added='2005-11-26'>mailto:jane.doe@example.com</uri>` +
` <uri added='2005-11-27'` +
` type='web'` +
` xmlns="http://example.com/ns">http://www.example.com</uri>` +
` <notes xmlns="http://example.com/ns" ` +
` xmlns:h="http://www.w3.org/1999/xhtml">` +
` Jane has been working way <h:em>too</h:em> long on the` +
` long-awaited revision of &lt;RFC2518&gt;.` +
` </notes>`,
}}
var n xmlNormalizer
for _, tc := range testCases {
d := ixml.NewDecoder(strings.NewReader(tc.input))
var v xmlValue
if err := d.Decode(&v); err != nil {
t.Errorf("%s: got error %v, want nil", tc.desc, err)
continue
}
eq, err := n.equalXML(bytes.NewReader(v), strings.NewReader(tc.wantVal))
if err != nil {
t.Errorf("%s: equalXML: %v", tc.desc, err)
continue
}
if !eq {
t.Errorf("%s:\ngot %s\nwant %s", tc.desc, string(v), tc.wantVal)
}
}
}
// xmlNormalizer normalizes XML.
type xmlNormalizer struct {
// omitWhitespace instructs to ignore whitespace between element tags.
omitWhitespace bool
// omitComments instructs to ignore XML comments.
omitComments bool
}
// normalize writes the normalized XML content of r to w. It applies the
// following rules
//
// * Rename namespace prefixes according to an internal heuristic.
// * Remove unnecessary namespace declarations.
// * Sort attributes in XML start elements in lexical order of their
// fully qualified name.
// * Remove XML directives and processing instructions.
// * Remove CDATA between XML tags that only contains whitespace, if
// instructed to do so.
// * Remove comments, if instructed to do so.
//
func (n *xmlNormalizer) normalize(w io.Writer, r io.Reader) error {
d := ixml.NewDecoder(r)
e := ixml.NewEncoder(w)
for {
t, err := d.Token()
if err != nil {
if t == nil && err == io.EOF {
break
}
return err
}
switch val := t.(type) {
case ixml.Directive, ixml.ProcInst:
continue
case ixml.Comment:
if n.omitComments {
continue
}
case ixml.CharData:
if n.omitWhitespace && len(bytes.TrimSpace(val)) == 0 {
continue
}
case ixml.StartElement:
start, _ := ixml.CopyToken(val).(ixml.StartElement)
attr := start.Attr[:0]
for _, a := range start.Attr {
if a.Name.Space == "xmlns" || a.Name.Local == "xmlns" {
continue
}
attr = append(attr, a)
}
sort.Sort(byName(attr))
start.Attr = attr
t = start
}
err = e.EncodeToken(t)
if err != nil {
return err
}
}
return e.Flush()
}
// equalXML tests for equality of the normalized XML contents of a and b.
func (n *xmlNormalizer) equalXML(a, b io.Reader) (bool, error) {
var buf bytes.Buffer
if err := n.normalize(&buf, a); err != nil {
return false, err
}
normA := buf.String()
buf.Reset()
if err := n.normalize(&buf, b); err != nil {
return false, err
}
normB := buf.String()
return normA == normB, nil
}
type byName []ixml.Attr
func (a byName) Len() int { return len(a) }
func (a byName) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a byName) Less(i, j int) bool {
if a[i].Name.Space != a[j].Name.Space {
return a[i].Name.Space < a[j].Name.Space
}
return a[i].Name.Local < a[j].Name.Local
}