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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
const TESTCASE_URI = TEST_BASE_HTTPS + "simple.html";
const NEW_RULE = "body { background-color: purple; }";
add_task(async function () {
const { ui } = await openStyleEditorForURL(TESTCASE_URI);
is(ui.editors.length, 2, "correct number of editors");
const editor = ui.editors[0];
await openEditor(editor);
// Set text twice in a row
const styleChanges = listenForStyleChange(editor);
editor.sourceEditor.setText(NEW_RULE);
editor.sourceEditor.setText(NEW_RULE + " ");
await styleChanges;
const rules = await SpecialPowers.spawn(
gBrowser.selectedBrowser,
[0],
async function (index) {
const sheet = content.document.styleSheets[index];
return [...sheet.cssRules].map(rule => rule.cssText);
}
);
// Test that we removed the transition rule, but kept the rule we added
is(rules.length, 1, "only one rule in stylesheet");
is(rules[0], NEW_RULE, "stylesheet only contains rule we added");
});
/* Helpers */
function openEditor(editor) {
const link = editor.summary.querySelector(".stylesheet-name");
link.click();
return editor.getSourceEditor();
}
function listenForStyleChange(editor) {
return editor.once("style-applied");
}
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