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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Tests that the "no-results" message is displayed when selecting an invalid element or
// when all properties have been filtered out.
const TEST_URI = `
<style type="text/css">
.matches {
color: #F00;
background-color: #00F;
border-color: #0F0;
}
</style>
<div>
<!-- comment node -->
<span id="matches" class="matches">Some styled text</span>
</div>
`;
add_task(async function () {
await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
const { inspector, view } = await openComputedView();
const propertyViews = view.propertyViews;
info("Select the #matches node");
const matchesNode = await getNodeFront("#matches", inspector);
let onRefresh = inspector.once("computed-view-refreshed");
await selectNode(matchesNode, inspector);
await onRefresh;
ok(
!!propertyViews.filter(p => p.visible).length,
"CSS properties are displayed"
);
ok(view.noResults.hasAttribute("hidden"), "no-results message is hidden");
info("Select a comment node");
const commentNode = await inspector.walker.previousSibling(matchesNode);
await selectNode(commentNode, inspector);
is(propertyViews.filter(p => p.visible).length, 0, "No properties displayed");
ok(!view.noResults.hasAttribute("hidden"), "no-results message is displayed");
info("Select the #matches node again");
onRefresh = inspector.once("computed-view-refreshed");
await selectNode(matchesNode, inspector);
await onRefresh;
ok(
!!propertyViews.filter(p => p.visible).length,
"CSS properties are displayed"
);
ok(view.noResults.hasAttribute("hidden"), "no-results message is hidden");
info(
"Filter by 'will-not-match' and check the no-results message is displayed"
);
const searchField = view.searchField;
searchField.focus();
synthesizeKeys("will-not-match", view.styleWindow);
await inspector.once("computed-view-refreshed");
is(propertyViews.filter(p => p.visible).length, 0, "No properties displayed");
ok(!view.noResults.hasAttribute("hidden"), "no-results message is displayed");
});