<!DOCTYPE html>
<!--
[%provenance%]
-->
<html lang="en">
<meta charset="utf-8">
<title>HTTP headers on image request triggered by change to environment</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/fetch/metadata/resources/helper.sub.js"></script>
<body>
<script>
'use strict';
// The response to the request under test must describe a valid image
// resource in order for the `load` event to be fired.
const params = {
body: `
<svg xmlns="http://www.w3.org/2000/svg" width="123" height="123">
<rect fill="lime" width="123" height="123"/>
</svg>
`,
mime: 'image/svg+xml'
};
function induceRequest(t, url, attributes) {
const iframe = document.createElement('iframe');
iframe.style.width = '50px';
document.body.appendChild(iframe);
t.add_cleanup(() => iframe.remove());
iframe.contentDocument.open();
iframe.contentDocument.close();
const image = iframe.contentDocument.createElement('img');
for (const [ name, value ] of Object.entries(attributes)) {
image.setAttribute(name, value);
}
iframe.contentDocument.body.appendChild(image);
image.setAttribute('srcset', `${url} 100w, /media/1x1-green.png 1w`);
image.setAttribute('sizes', '(max-width: 100px) 1px, (min-width: 150px) 123px');
return new Promise((resolve) => {
image.onload = image.onerror = resolve;
})
.then(() => {
iframe.style.width = '200px';
return new Promise((resolve) => image.onload = resolve);
});
}
{%- for subtest in subtests %}
promise_test((t) => {
const key = '{{uuid()}}';
return induceRequest(
t,
makeRequestURL(key, [% subtest.origins %], params),
[%subtest.elementAttrs | default({}) | tojson%]
)
.then(() => retrieve(key))
.then((headers) => {
{%- if subtest.expected == none %}
assert_not_own_property(headers, '[%subtest.headerName%]');
{%- else %}
assert_own_property(headers, '[%subtest.headerName%]');
assert_array_equals(headers['[%subtest.headerName%]'], ['[%subtest.expected%]']);
{%- endif %}
});
}, '[%subtest.headerName%] - [%subtest.description | pad("end", ", ")%][%subtest.elementAttrs | collection("attributes")%]');
{%- endfor %}
</script>
</body>
</html>
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