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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Tests that removing the only declaration from a rule and unselecting then re-selecting
const TEST_URI = `
<style type='text/css'>
#testid {
color: #00F;
}
</style>
<div id='testid'>Styled Node</div>
<div id='empty'></div>
`;
add_task(async function () {
await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
const { inspector, view } = await openRuleView();
info("Select original node");
await selectNode("#testid", inspector);
info("Get the first property in the #testid rule");
const rule = getRuleViewRuleEditor(view, 1).rule;
const prop = rule.textProps[0];
info("Delete the property name to remove the declaration");
const onRuleViewChanged = view.once("ruleview-changed");
await removeProperty(view, prop, false);
info("Wait for Rule view to update");
await onRuleViewChanged;
is(rule.textProps.length, 0, "No CSS properties left on the rule");
info("Select another node");
await selectNode("#empty", inspector);
info("Select original node again");
await selectNode("#testid", inspector);
is(rule.textProps.length, 0, "Still no CSS properties on the rule");
});