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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Check that Inspect Element works even if the selector of the inspected
// element changes after opening the context menu.
// For this test, we explicitly move the element when opening the context menu.
const TEST_URL =
`data:text/html;charset=utf-8,` +
encodeURIComponent(`
<div id="parent-1">
<span>Inspect me</span>
</div>
<div id="parent-2"></div>
<div id="changing-id">My ID will change</div>
<script type="text/javascript">
document.querySelector("span").addEventListener("contextmenu", () => {
// Right after opening the context menu, move the target element in the
// tree to change its selector.
window.setTimeout(() => {
const span = document.querySelector("span");
document.getElementById("parent-2").appendChild(span);
}, 0)
});
document.querySelector("#changing-id").addEventListener("contextmenu", () => {
// Right after opening the context menu, update the id of #changing-id
// to make sure we are not relying on outdated selectors to find the node
window.setTimeout(() => {
document.querySelector("#changing-id").id= "new-id";
}, 0)
});
</script>
`);
add_task(async function () {
await addTab(TEST_URL);
await testNodeWithChangingPath();
await testNodeWithChangingId();
});
async function testNodeWithChangingPath() {
info("Test that inspect element works if the CSS path changes");
const inspector = await clickOnInspectMenuItem("span");
const selectedNode = inspector.selection.nodeFront;
ok(selectedNode, "A node is selected in the inspector");
is(
selectedNode.tagName.toLowerCase(),
"span",
"The selected node is correct"
);
const parentNode = await selectedNode.parentNode();
is(
parentNode.id,
"parent-2",
"The selected node is under the expected parent node"
);
}
async function testNodeWithChangingId() {
info("Test that inspect element works if the id changes");
const inspector = await clickOnInspectMenuItem("#changing-id");
const selectedNode = inspector.selection.nodeFront;
ok(selectedNode, "A node is selected in the inspector");
is(selectedNode.id.toLowerCase(), "new-id", "The selected node is correct");
}