1 files changed, 56 insertions, 0 deletions
diff --git a/devtools/client/inspector/components/test/browser_boxmodel_guides.js b/devtools/client/inspector/components/test/browser_boxmodel_guides.js
new file mode 100644
index 000000000..612d9ace6
--- /dev/null
+++ b/devtools/client/inspector/components/test/browser_boxmodel_guides.js
@@ -0,0 +1,56 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that hovering over regions in the box-model shows the highlighter with
+// the right options.
+// Tests that actually check the highlighter is displayed and correct are in the
+// devtools/inspector/test folder. This test only cares about checking that the
+// box model view does call the highlighter, and it does so by mocking it.
+
+const STYLE = "div { position: absolute; top: 50px; left: 50px; " +
+              "height: 10px; width: 10px; border: 10px solid black; " +
+              "padding: 10px; margin: 10px;}";
+const HTML = "<style>" + STYLE + "</style><div></div>";
+const TEST_URL = "data:text/html;charset=utf-8," + encodeURIComponent(HTML);
+
+var highlightedNodeFront, highlighterOptions;
+
+add_task(function* () {
+  yield addTab(TEST_URL);
+  let {toolbox, inspector, view} = yield openBoxModelView();
+  yield selectNode("div", inspector);
+
+  // Mock the highlighter by replacing the showBoxModel method.
+  toolbox.highlighter.showBoxModel = function (nodeFront, options) {
+    highlightedNodeFront = nodeFront;
+    highlighterOptions = options;
+  };
+
+  let elt = view.doc.getElementById("boxmodel-margins");
+  yield testGuideOnLayoutHover(elt, "margin", inspector, view);
+
+  elt = view.doc.getElementById("boxmodel-borders");
+  yield testGuideOnLayoutHover(elt, "border", inspector, view);
+
+  elt = view.doc.getElementById("boxmodel-padding");
+  yield testGuideOnLayoutHover(elt, "padding", inspector, view);
+
+  elt = view.doc.getElementById("boxmodel-content");
+  yield testGuideOnLayoutHover(elt, "content", inspector, view);
+});
+
+function* testGuideOnLayoutHover(elt, expectedRegion, inspector) {
+  info("Synthesizing mouseover on the boxmodel-view");
+  EventUtils.synthesizeMouse(elt, 2, 2, {type: "mouseover"},
+    elt.ownerDocument.defaultView);
+
+  info("Waiting for the node-highlight event from the toolbox");
+  yield inspector.toolbox.once("node-highlight");
+
+  is(highlightedNodeFront, inspector.selection.nodeFront,
+    "The right nodeFront was highlighted");
+  is(highlighterOptions.region, expectedRegion,
+    "Region " + expectedRegion + " was highlighted");
+}