tor-browser

browser_computed_getNodeInfo.js (5507B)

---

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

"use strict";

// Tests various output of the computed-view's getNodeInfo method.
// This method is used by the HighlightersOverlay and TooltipsOverlay on mouseover to
// decide which highlighter or tooltip to show when hovering over a value/name/selector
// if any.
//
// For instance, browser_ruleview_selector-highlighter_01.js and
// browser_ruleview_selector-highlighter_02.js test that the selector
// highlighter appear when hovering over a selector in the rule-view.
// Since the code to make this work for the computed-view is 90% the same,
// there is no need for testing it again here.
// This test however serves as a unit test for getNodeInfo.

const {
 VIEW_NODE_SELECTOR_TYPE,
 VIEW_NODE_PROPERTY_TYPE,
 VIEW_NODE_VALUE_TYPE,
 VIEW_NODE_IMAGE_URL_TYPE,
} = require("resource://devtools/client/inspector/shared/node-types.js");

const TEST_URI = `
 <style type="text/css">
   body {
     background: red;
     color: white;
   }
   div {
     background: green;
   }
   div div {
     background-color: yellow;
     background-image: url(chrome://branding/content/icon64.png);
     color: red;
   }
 </style>
 <div><div id="testElement">Test element</div></div>
`;

// Each item in this array must have the following properties:
// - desc {String} will be logged for information
// - getHoveredNode {Generator Function} received the computed-view instance as
//   argument and must return the node to be tested
// - assertNodeInfo {Function} should check the validity of the nodeInfo
//   argument it receives
const TEST_DATA = [
 {
   desc: "Testing a null node",
   getHoveredNode() {
     return null;
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo, null);
   },
 },
 {
   desc: "Testing a useless node",
   getHoveredNode(view) {
     return view.element;
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo, null);
   },
 },
 {
   desc: "Testing a property name",
   getHoveredNode(view) {
     return getComputedViewProperty(view, "color").nameSpan;
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo.type, VIEW_NODE_PROPERTY_TYPE);
     ok("property" in nodeInfo.value);
     ok("value" in nodeInfo.value);
     is(nodeInfo.value.property, "color");
     is(nodeInfo.value.value, "rgb(255, 0, 0)");
   },
 },
 {
   desc: "Testing a property value",
   getHoveredNode(view) {
     return getComputedViewProperty(view, "color").valueSpan;
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo.type, VIEW_NODE_VALUE_TYPE);
     ok("property" in nodeInfo.value);
     ok("value" in nodeInfo.value);
     is(nodeInfo.value.property, "color");
     is(nodeInfo.value.value, "rgb(255, 0, 0)");
   },
 },
 {
   desc: "Testing an image url",
   getHoveredNode(view) {
     const { valueSpan } = getComputedViewProperty(view, "background-image");
     return valueSpan.querySelector(".theme-link");
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo.type, VIEW_NODE_IMAGE_URL_TYPE);
     ok("property" in nodeInfo.value);
     ok("value" in nodeInfo.value);
     is(nodeInfo.value.property, "background-image");
     is(nodeInfo.value.value, 'url("chrome://branding/content/icon64.png")');
     is(nodeInfo.value.url, "chrome://branding/content/icon64.png");
   },
 },
 {
   desc: "Testing a matched rule selector (bestmatch)",
   async getHoveredNode(view) {
     const el = await getComputedViewMatchedRules(view, "background-color");
     return el.querySelector(".bestmatch");
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo.type, VIEW_NODE_SELECTOR_TYPE);
     is(nodeInfo.value, "div div");
   },
 },
 {
   desc: "Testing a matched rule selector (matched)",
   async getHoveredNode(view) {
     const el = await getComputedViewMatchedRules(view, "background-color");
     return el.querySelector(".matched");
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo.type, VIEW_NODE_SELECTOR_TYPE);
     is(nodeInfo.value, "div");
   },
 },
 {
   desc: "Testing a matched rule selector (parentmatch)",
   async getHoveredNode(view) {
     const el = await getComputedViewMatchedRules(view, "color");
     return el.querySelector(".parentmatch");
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo.type, VIEW_NODE_SELECTOR_TYPE);
     is(nodeInfo.value, "body");
   },
 },
 {
   desc: "Testing a matched rule value",
   async getHoveredNode(view) {
     const el = await getComputedViewMatchedRules(view, "color");
     return el.querySelector(".computed-other-property-value");
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo.type, VIEW_NODE_VALUE_TYPE);
     is(nodeInfo.value.property, "color");
     is(nodeInfo.value.value, "red");
   },
 },
 {
   desc: "Testing a matched rule stylesheet link",
   async getHoveredNode(view) {
     const el = await getComputedViewMatchedRules(view, "color");
     return el.querySelector(".rule-link .theme-link");
   },
   assertNodeInfo(nodeInfo) {
     is(nodeInfo, null);
   },
 },
];

add_task(async function () {
 await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
 const { inspector, view } = await openComputedView();
 await selectNode("#testElement", inspector);

 for (const { desc, getHoveredNode, assertNodeInfo } of TEST_DATA) {
   info(desc);
   const nodeInfo = view.getNodeInfo(await getHoveredNode(view));
   assertNodeInfo(nodeInfo);
 }
});