gecko-dev/devtools/client/inspector/test/browser_inspector_pseudoclass-menu.js

/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";

// Test that the inspector has the correct pseudo-class locking menu items and
// that these items actually work

const { PSEUDO_CLASSES } = require("devtools/shared/css/constants");
const TEST_URI =
  "data:text/html;charset=UTF-8," +
  "pseudo-class lock node menu tests" +
  "<div>test div</div>";
// Strip the colon prefix from pseudo-classes (:before => before)
const PSEUDOS = PSEUDO_CLASSES.map(pseudo => pseudo.substr(1));

add_task(async function() {
  const { inspector, testActor } = await openInspectorForURL(TEST_URI);
  await selectNode("div", inspector);

  const allMenuItems = openContextMenuAndGetAllItems(inspector);

  await testMenuItems(testActor, allMenuItems, inspector);
});

async function testMenuItems(testActor, allMenuItems, inspector) {
  for (const pseudo of PSEUDOS) {
    const menuItem = allMenuItems.find(
      item => item.id === "node-menu-pseudo-" + pseudo
    );
    ok(menuItem, ":" + pseudo + " menuitem exists");
    is(menuItem.disabled, false, ":" + pseudo + " menuitem is enabled");

    // Give the inspector panels a chance to update when the pseudoclass changes
    const onPseudo = inspector.selection.once("pseudoclass");
    const onRefresh = inspector.once("rule-view-refreshed");

    // Walker uses SDK-events so calling walker.once does not return a promise.
    const onMutations = once(inspector.walker, "mutations");

    menuItem.click();

    await onPseudo;
    await onRefresh;
    await onMutations;

    const hasLock = await testActor.hasPseudoClassLock("div", ":" + pseudo);
    ok(hasLock, "pseudo-class lock has been applied");
  }
}