browser_rules_inherited-properties_03.js

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/* Any copyright is dedicated to the Public Domain.

 http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Check that inline inherited properties appear in the nested element.

var {

  style: { ELEMENT_STYLE },

} = require("resource://devtools/shared/constants.js");

const TEST_URI = `

  <div id="test2" style="color: red">

    <div id="test1">Styled Node</div>

  </div>

`;

add_task(async function () {

  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));

  const { inspector, view } = await openRuleView();

  await selectNode("#test1", inspector);

  await elementStyleInherit(inspector, view);

});

function elementStyleInherit(inspector, view) {

  const elementStyle = view._elementStyle;

  is(elementStyle.rules.length, 2, "Should have 2 rules.");

  const elementRule = elementStyle.rules[0];

ok(

    !elementRule.inherited,

    "Element style attribute should not consider itself inherited."

);

  const inheritRule = elementStyle.rules[1];

is(

    inheritRule.domRule.type,

    ELEMENT_STYLE,

    "Inherited rule should be an element style, not a rule."

);

  ok(!!inheritRule.inherited, "Rule should consider itself inherited.");

is(

    inheritRule.textProps.length,

1,

    "Should only display one inherited style"

);

  const inheritProp = inheritRule.textProps[0];

  is(inheritProp.name, "color", "color should have been inherited.");