1 files changed, 61 insertions, 0 deletions
diff --git a/devtools/client/shared/test/browser_html_tooltip_width-auto.js b/devtools/client/shared/test/browser_html_tooltip_width-auto.js
new file mode 100644
index 000000000..66e33673e
--- /dev/null
+++ b/devtools/client/shared/test/browser_html_tooltip_width-auto.js
@@ -0,0 +1,61 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* import-globals-from helper_html_tooltip.js */
+
+"use strict";
+
+/**
+ * Test the HTMLTooltip content can automatically calculate its width based on content.
+ */
+
+const HTML_NS = "http://www.w3.org/1999/xhtml";
+const TEST_URI = `data:text/xml;charset=UTF-8,<?xml version="1.0"?>
+  <?xml-stylesheet href="chrome://global/skin/global.css"?>
+  <?xml-stylesheet href="chrome://devtools/skin/tooltips.css"?>
+  <window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+   title="Tooltip test">
+    <vbox flex="1">
+      <hbox id="box1" flex="1">test1</hbox>
+      <hbox id="box2" flex="1">test2</hbox>
+      <hbox id="box3" flex="1">test3</hbox>
+      <hbox id="box4" flex="1">test4</hbox>
+    </vbox>
+  </window>`;
+
+const {HTMLTooltip} = require("devtools/client/shared/widgets/tooltip/HTMLTooltip");
+loadHelperScript("helper_html_tooltip.js");
+
+let useXulWrapper;
+
+add_task(function* () {
+  yield addTab("about:blank");
+  let [,, doc] = yield createHost("bottom", TEST_URI);
+
+  info("Run tests for a Tooltip without using a XUL panel");
+  useXulWrapper = false;
+  yield runTests(doc);
+
+  info("Run tests for a Tooltip with a XUL panel");
+  useXulWrapper = true;
+  yield runTests(doc);
+});
+
+function* runTests(doc) {
+  let tooltip = new HTMLTooltip(doc, {useXulWrapper});
+  info("Create tooltip content width to 150px");
+  let tooltipContent = doc.createElementNS(HTML_NS, "div");
+  tooltipContent.style.cssText = "height: 100%; width: 150px; background: red;";
+
+  info("Set tooltip content using width:auto");
+  tooltip.setContent(tooltipContent, {width: "auto", height: 50});
+
+  info("Show the tooltip and check the tooltip panel width.");
+  yield showTooltip(tooltip, doc.getElementById("box1"));
+
+  let panelRect = tooltip.panel.getBoundingClientRect();
+  is(panelRect.width, 150, "Tooltip panel has the expected width.");
+
+  yield hideTooltip(tooltip);
+
+  tooltip.destroy();
+}