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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /html/rendering/replaced-elements/attributes-for-embedded-content-and-images/align.html - WPT Dashboard Interop Dashboard
<!doctype html>
<title>align attribute mapping on replaced elements</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<img id="replaced" src="/images/green.png">
<something id="non-replaced"></something>
<script>
const kMapping = {
"left": ["float", "left"],
"right": ["float", "right"],
"top": ["vertical-align", "top"],
// This one requires a magic value (`-moz-middle-with-baseline` on Gecko,
// `-webkit-baseline-middle` on WebKit-based browsers).
"middle": ["vertical-align", undefined],
// These are inconsistent across browsers. WebKit maps it to "middle", Gecko
// to the aforementioned value.
"center": ["vertical-align", undefined],
"baseline": ["vertical-align", "baseline"],
"bottom": ["vertical-align", "baseline"], // *shrug*
"texttop": ["vertical-align", "text-top"],
"absmiddle": ["vertical-align", "middle"],
"abscenter": ["vertical-align", "middle"],
"absbottom": ["vertical-align", "bottom"],
};
const kInitialValues = {
"vertical-align": "baseline",
"float": "none",
};
let replaced = document.getElementById("replaced");
let nonReplaced = document.getElementById("non-replaced");
let t = async_test("align attribute mapping");
onload = t.step_func_done(function() {
for (const attributeValue in kMapping) {
for (const element of [replaced, nonReplaced]) {
test(function() {
element.setAttribute("align", attributeValue);
let [property, expected] = kMapping[attributeValue];
let actual = getComputedStyle(element).getPropertyValue(property);
if (element == nonReplaced) {
assert_equals(actual, kInitialValues[property], "align shouldn't map to non-replaced elements")
} else {
if (expected) {
assert_equals(actual, expected, `align=${attributeValue} should map to ${property}: ${expected}`);
} else {
assert_equals(property, "vertical-align");
assert_not_equals(actual, "baseline", `align=${attributeValue} should map a vertical-align value`);
}
}
}, `align=${attributeValue} on ${element == replaced ? "replaced" : "non-replaced"} elements`);
}
}
});
</script>