1 files changed, 122 insertions, 0 deletions
diff --git a/devtools/client/inspector/boxmodel/test/browser_boxmodel_pseudo-element.js b/devtools/client/inspector/boxmodel/test/browser_boxmodel_pseudo-element.js
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+++ b/devtools/client/inspector/boxmodel/test/browser_boxmodel_pseudo-element.js
@@ -0,0 +1,122 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the box model displays the right values for a pseudo-element.
+
+const TEST_URI = `
+  <style type='text/css'>
+    div {
+      box-sizing: border-box;
+      display: block;
+      float: left;
+      line-height: 20px;
+      position: relative;
+      z-index: 2;
+      height: 100px;
+      width: 100px;
+      border: 10px solid black;
+      padding: 20px;
+      margin: 30px auto;
+    }
+
+    div::before {
+      content: 'before';
+      display: block;
+      width: 32px;
+      height: 32px;
+      margin: 0 auto 6px;
+    }
+  </style>
+  <div>Test Node</div>
+`;
+
+// Expected values:
+const res1 = [
+  {
+    selector: ".boxmodel-element-size",
+    value: "32" + "\u00D7" + "32",
+  },
+  {
+    selector: ".boxmodel-size > .boxmodel-width",
+    value: "32",
+  },
+  {
+    selector: ".boxmodel-size > .boxmodel-height",
+    value: "32",
+  },
+  {
+    selector: ".boxmodel-margin.boxmodel-top > span",
+    value: "0",
+  },
+  {
+    selector: ".boxmodel-margin.boxmodel-left > span",
+    value: "4", // (100 - (10 * 2) - (20 * 2) - 32) / 2
+  },
+  {
+    selector: ".boxmodel-margin.boxmodel-bottom > span",
+    value: "6",
+  },
+  {
+    selector: ".boxmodel-margin.boxmodel-right > span",
+    value: "4", // (100 - (10 * 2) - (20 * 2) - 32) / 2
+  },
+  {
+    selector: ".boxmodel-padding.boxmodel-top > span",
+    value: "0",
+  },
+  {
+    selector: ".boxmodel-padding.boxmodel-left > span",
+    value: "0",
+  },
+  {
+    selector: ".boxmodel-padding.boxmodel-bottom > span",
+    value: "0",
+  },
+  {
+    selector: ".boxmodel-padding.boxmodel-right > span",
+    value: "0",
+  },
+  {
+    selector: ".boxmodel-border.boxmodel-top > span",
+    value: "0",
+  },
+  {
+    selector: ".boxmodel-border.boxmodel-left > span",
+    value: "0",
+  },
+  {
+    selector: ".boxmodel-border.boxmodel-bottom > span",
+    value: "0",
+  },
+  {
+    selector: ".boxmodel-border.boxmodel-right > span",
+    value: "0",
+  },
+];
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, boxmodel } = await openLayoutView();
+  const node = await getNodeFront("div", inspector);
+  const children = await inspector.markup.walker.children(node);
+  const beforeElement = children.nodes[0];
+
+  await selectNode(beforeElement, inspector);
+  await testInitialValues(inspector, boxmodel);
+});
+
+function testInitialValues(inspector, boxmodel) {
+  info("Test that the initial values of the box model are correct");
+  const doc = boxmodel.document;
+
+  for (let i = 0; i < res1.length; i++) {
+    const elt = doc.querySelector(res1[i].selector);
+    is(
+      elt.textContent,
+      res1[i].value,
+      res1[i].selector + " has the right value."
+    );
+  }
+}