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Add native lazy loading for images and iframes

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This feature is available only in Chrome >= 76 for now.

See https://web.dev/native-lazy-loading
This commit is contained in:
Frédéric Guillot 2019-09-10 21:12:38 -07:00 • committed by Frédéric Guillot
parent 937492f6f5
commit 8d8f78241d
11 changed files with 39 additions and 37 deletions
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20
reader/sanitizer/sanitizer_test.go
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@ -7,7 +7,7 @@ package sanitizer // import "miniflux.app/reader/sanitizer"
import "testing"
func TestValidInput(t *testing.T) {
input := `<p>This is a <strong>text</strong> with an image: <img src="http://example.org/" alt="Test">.</p>`
input := `<p>This is a <strong>text</strong> with an image: <img src="http://example.org/" alt="Test" loading="lazy">.</p>`
output := Sanitize("http://example.org/", input)
if input != output {
@ -16,7 +16,7 @@ func TestValidInput(t *testing.T) {
}
func TestSelfClosingTags(t *testing.T) {
input := `<p>This <br> is a <strong>text</strong> <br/>with an image: <img src="http://example.org/" alt="Test"/>.</p>`
input := `<p>This <br> is a <strong>text</strong> <br/>with an image: <img src="http://example.org/" alt="Test" loading="lazy"/>.</p>`
output := Sanitize("http://example.org/", input)
if input != output {
@ -35,7 +35,7 @@ func TestTable(t *testing.T) {
func TestRelativeURL(t *testing.T) {
input := `This <a href="/test.html">link is relative</a> and this image: <img src="../folder/image.png"/>`
expected := `This <a href="http://example.org/test.html" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">link is relative</a> and this image: <img src="http://example.org/folder/image.png"/>`
expected := `This <a href="http://example.org/test.html" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">link is relative</a> and this image: <img src="http://example.org/folder/image.png" loading="lazy"/>`
output := Sanitize("http://example.org/", input)
if expected != output {
@ -165,7 +165,7 @@ func TestEspaceAttributes(t *testing.T) {
func TestReplaceYoutubeURL(t *testing.T) {
input := `<iframe src="http://www.youtube.com/embed/test123?version=3&#038;rel=1&#038;fs=1&#038;autohide=2&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;wmode=transparent"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123?version=3&amp;rel=1&amp;fs=1&amp;autohide=2&amp;showsearch=0&amp;showinfo=1&amp;iv_load_policy=1&amp;wmode=transparent" sandbox="allow-scripts allow-same-origin allow-popups"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123?version=3&amp;rel=1&amp;fs=1&amp;autohide=2&amp;showsearch=0&amp;showinfo=1&amp;iv_load_policy=1&amp;wmode=transparent" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
@ -175,7 +175,7 @@ func TestReplaceYoutubeURL(t *testing.T) {
func TestReplaceSecureYoutubeURL(t *testing.T) {
input := `<iframe src="https://www.youtube.com/embed/test123"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123" sandbox="allow-scripts allow-same-origin allow-popups"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
@ -185,7 +185,7 @@ func TestReplaceSecureYoutubeURL(t *testing.T) {
func TestReplaceSecureYoutubeURLWithParameters(t *testing.T) {
input := `<iframe src="https://www.youtube.com/embed/test123?rel=0&amp;controls=0"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123?rel=0&amp;controls=0" sandbox="allow-scripts allow-same-origin allow-popups"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123?rel=0&amp;controls=0" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
@ -195,7 +195,7 @@ func TestReplaceSecureYoutubeURLWithParameters(t *testing.T) {
func TestReplaceYoutubeURLAlreadyReplaced(t *testing.T) {
input := `<iframe src="https://www.youtube-nocookie.com/embed/test123?rel=0&amp;controls=0" sandbox="allow-scripts allow-same-origin"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123?rel=0&amp;controls=0" sandbox="allow-scripts allow-same-origin allow-popups"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123?rel=0&amp;controls=0" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
@ -205,7 +205,7 @@ func TestReplaceYoutubeURLAlreadyReplaced(t *testing.T) {
func TestReplaceProtocolRelativeYoutubeURL(t *testing.T) {
input := `<iframe src="//www.youtube.com/embed/Bf2W84jrGqs" width="560" height="314" allowfullscreen="allowfullscreen"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/Bf2W84jrGqs" width="560" height="314" allowfullscreen="allowfullscreen" sandbox="allow-scripts allow-same-origin allow-popups"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/Bf2W84jrGqs" width="560" height="314" allowfullscreen="allowfullscreen" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
@ -215,7 +215,7 @@ func TestReplaceProtocolRelativeYoutubeURL(t *testing.T) {
func TestReplaceIframeURL(t *testing.T) {
input := `<iframe src="https://player.vimeo.com/video/123456?title=0&amp;byline=0"></iframe>`
expected := `<iframe src="https://player.vimeo.com/video/123456?title=0&amp;byline=0" sandbox="allow-scripts allow-same-origin allow-popups"></iframe>`
expected := `<iframe src="https://player.vimeo.com/video/123456?title=0&amp;byline=0" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
@ -224,7 +224,7 @@ func TestReplaceIframeURL(t *testing.T) {
}
func TestReplaceNoScript(t *testing.T) {
input := `<p>Before paragraph.</p><noscript>Inside <code>noscript</code> tag with an image: <img src="http://example.org/" alt="Test"></noscript><p>After paragraph.</p>`
input := `<p>Before paragraph.</p><noscript>Inside <code>noscript</code> tag with an image: <img src="http://example.org/" alt="Test" loading="lazy"></noscript><p>After paragraph.</p>`
expected := `<p>Before paragraph.</p><p>After paragraph.</p>`
output := Sanitize("http://example.org/", input)