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// Copyright 2022 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 web
import (
"net/url"
"runtime"
"testing"
)
func TestURLToFilePath(t *testing.T) {
for _, tc := range urlTests() {
if tc.url == "" {
continue
}
tc := tc
t.Run(tc.url, func(t *testing.T) {
u, err := url.Parse(tc.url)
if err != nil {
t.Fatalf("url.Parse(%q): %v", tc.url, err)
}
path, err := URLToFilePath(u)
if err != nil {
if err.Error() == tc.wantErr {
return
}
if tc.wantErr == "" {
t.Fatalf("urlToFilePath(%v): %v; want <nil>", u, err)
} else {
t.Fatalf("urlToFilePath(%v): %v; want %s", u, err, tc.wantErr)
}
}
if path != tc.filePath || tc.wantErr != "" {
t.Fatalf("urlToFilePath(%v) = %q, <nil>; want %q, %s", u, path, tc.filePath, tc.wantErr)
}
})
}
}
func TestURLFromFilePath(t *testing.T) {
for _, tc := range urlTests() {
if tc.filePath == "" {
continue
}
tc := tc
t.Run(tc.filePath, func(t *testing.T) {
u, err := URLFromFilePath(tc.filePath)
if err != nil {
if err.Error() == tc.wantErr {
return
}
if tc.wantErr == "" {
t.Fatalf("urlFromFilePath(%v): %v; want <nil>", tc.filePath, err)
} else {
t.Fatalf("urlFromFilePath(%v): %v; want %s", tc.filePath, err, tc.wantErr)
}
}
if tc.wantErr != "" {
t.Fatalf("urlFromFilePath(%v) = <nil>; want error: %s", tc.filePath, tc.wantErr)
}
wantURL := tc.url
if tc.canonicalURL != "" {
wantURL = tc.canonicalURL
}
if u.String() != wantURL {
t.Errorf("urlFromFilePath(%v) = %v; want %s", tc.filePath, u, wantURL)
}
})
}
}
func urlTests() []urlTest {
if runtime.GOOS == "windows" {
return urlTestsWindows
}
return urlTestsOthers
}
type urlTest struct {
url string
filePath string
canonicalURL string // If empty, assume equal to url.
wantErr string
}
var urlTestsOthers = []urlTest{
// Examples from RFC 8089:
{
url: `file:///path/to/file`,
filePath: `/path/to/file`,
},
{
url: `file:/path/to/file`,
filePath: `/path/to/file`,
canonicalURL: `file:///path/to/file`,
},
{
url: `file://localhost/path/to/file`,
filePath: `/path/to/file`,
canonicalURL: `file:///path/to/file`,
},
// We reject non-local files.
{
url: `file://host.example.com/path/to/file`,
wantErr: "file URL specifies non-local host",
},
}
var urlTestsWindows = []urlTest{
// Examples from https://blogs.msdn.microsoft.com/ie/2006/12/06/file-uris-in-windows/:
{
url: `file://laptop/My%20Documents/FileSchemeURIs.doc`,
filePath: `\\laptop\My Documents\FileSchemeURIs.doc`,
},
{
url: `file:///C:/Documents%20and%20Settings/davris/FileSchemeURIs.doc`,
filePath: `C:\Documents and Settings\davris\FileSchemeURIs.doc`,
},
{
url: `file:///D:/Program%20Files/Viewer/startup.htm`,
filePath: `D:\Program Files\Viewer\startup.htm`,
},
{
url: `file:///C:/Program%20Files/Music/Web%20Sys/main.html?REQUEST=RADIO`,
filePath: `C:\Program Files\Music\Web Sys\main.html`,
canonicalURL: `file:///C:/Program%20Files/Music/Web%20Sys/main.html`,
},
{
url: `file://applib/products/a-b/abc_9/4148.920a/media/start.swf`,
filePath: `\\applib\products\a-b\abc_9\4148.920a\media\start.swf`,
},
{
url: `file:////applib/products/a%2Db/abc%5F9/4148.920a/media/start.swf`,
wantErr: "file URL missing drive letter",
},
{
url: `C:\Program Files\Music\Web Sys\main.html?REQUEST=RADIO`,
wantErr: "non-file URL",
},
// The example "file://D:\Program Files\Viewer\startup.htm" errors out in
// url.Parse, so we substitute a slash-based path for testing instead.
{
url: `file://D:/Program Files/Viewer/startup.htm`,
wantErr: "file URL encodes volume in host field: too few slashes?",
},
// The blog post discourages the use of non-ASCII characters because they
// depend on the user's current codepage. However, when we are working with Go
// strings we assume UTF-8 encoding, and our url package refuses to encode
// URLs to non-ASCII strings.
{
url: `file:///C:/exampleㄓ.txt`,
filePath: `C:\exampleㄓ.txt`,
canonicalURL: `file:///C:/example%E3%84%93.txt`,
},
{
url: `file:///C:/example%E3%84%93.txt`,
filePath: `C:\exampleㄓ.txt`,
},
// Examples from RFC 8089:
// We allow the drive-letter variation from section E.2, because it is
// simpler to support than not to. However, we do not generate the shorter
// form in the reverse direction.
{
url: `file:c:/path/to/file`,
filePath: `c:\path\to\file`,
canonicalURL: `file:///c:/path/to/file`,
},
// We encode the UNC share name as the authority following section E.3.1,
// because that is what the Microsoft blog post explicitly recommends.
{
url: `file://host.example.com/Share/path/to/file.txt`,
filePath: `\\host.example.com\Share\path\to\file.txt`,
},
// We decline the four- and five-slash variations from section E.3.2.
// The paths in these URLs would change meaning under path.Clean.
{
url: `file:////host.example.com/path/to/file`,
wantErr: "file URL missing drive letter",
},
{
url: `file://///host.example.com/path/to/file`,
wantErr: "file URL missing drive letter",
},
}
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