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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
const {
PropertyView,
} = require("resource://devtools/client/inspector/computed/computed.js");
// Test matched selectors for a :host selector in the computed view.
const SHADOW_DOM = `<style>
:host {
color: red;
}
.test-span {
color: blue;
}
</style>
<span class="test-span">test</span>`;
const TEST_PAGE = `
<div id="host"></div>
<script>
const div = document.querySelector("div");
div.attachShadow({ mode: "open" }).innerHTML = \`${SHADOW_DOM}\`;
</script>`;
TEST_PAGE
)}`;
add_task(async function () {
await addTab(TEST_URI);
const { inspector, view } = await openComputedView();
{
await selectNode("#host", inspector);
const propertyView = await getPropertyViewWithSelectors(view, "color");
const selectors = propertyView.matchedSelectors.map(s => s.selector);
Assert.deepEqual(
selectors,
[":host", ":root"],
"host has the expected selectors for color"
);
}
{
const nodeFront = await getNodeFrontInShadowDom(
".test-span",
"#host",
inspector
);
await selectNode(nodeFront, inspector);
const propertyView = await getPropertyViewWithSelectors(view, "color");
const selectors = propertyView.matchedSelectors.map(s => s.selector);
Assert.deepEqual(
selectors,
[".test-span", ":host", ":root"],
"shadow host child has the expected selectors for color"
);
}
});
async function getPropertyViewWithSelectors(view, property) {
const propertyView = new PropertyView(view, property);
propertyView.createListItemElement();
propertyView.matchedExpanded = true;
await propertyView.refreshMatchedSelectors();
return propertyView;
}