1 files changed, 115 insertions, 0 deletions
diff --git a/devtools/client/shared/test/browser_inplace-editor_autocomplete_offset.js b/devtools/client/shared/test/browser_inplace-editor_autocomplete_offset.js
new file mode 100644
index 0000000000..7272ad7091
--- /dev/null
+++ b/devtools/client/shared/test/browser_inplace-editor_autocomplete_offset.js
@@ -0,0 +1,115 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* import-globals-from helper_inplace_editor.js */
+
+"use strict";
+
+const AutocompletePopup = require("resource://devtools/client/shared/autocomplete-popup.js");
+const {
+  InplaceEditor,
+} = require("resource://devtools/client/shared/inplace-editor.js");
+loadHelperScript("helper_inplace_editor.js");
+
+const TEST_URI =
+  CHROME_URL_ROOT + "doc_inplace-editor_autocomplete_offset.xhtml";
+
+// Test the inplace-editor autocomplete popup is aligned with the completed query.
+// Which means when completing "style=display:flex; color:" the popup will aim to be
+// aligned with the ":" next to "color".
+
+// format :
+//  [
+//    what key to press,
+//    expected input box value after keypress,
+//    selected suggestion index (-1 if popup is hidden),
+//    number of suggestions in the popup (0 if popup is hidden),
+//  ]
+// or
+//  ["checkPopupOffset"]
+// to measure and test the autocomplete popup left offset.
+const testData = [
+  ["VK_RIGHT", "style=", -1, 0],
+  ["d", "style=display", 1, 2],
+  ["checkPopupOffset"],
+  ["VK_RIGHT", "style=display", -1, 0],
+  [":", "style=display:block", 0, 3],
+  ["checkPopupOffset"],
+  ["f", "style=display:flex", -1, 0],
+  ["VK_RIGHT", "style=display:flex", -1, 0],
+  [";", "style=display:flex;", -1, 0],
+  ["c", "style=display:flex;color", 1, 2],
+  ["checkPopupOffset"],
+  ["VK_RIGHT", "style=display:flex;color", -1, 0],
+  [":", "style=display:flex;color:blue", 0, 2],
+  ["checkPopupOffset"],
+];
+
+const mockValues = {
+  clear: [],
+  color: ["blue", "red"],
+  direction: [],
+  display: ["block", "flex", "none"],
+};
+
+add_task(async function () {
+  await addTab(
+    "data:text/html;charset=utf-8,inplace editor CSS value autocomplete"
+  );
+  const { host, doc } = await createHost("bottom", TEST_URI);
+
+  const popup = new AutocompletePopup(doc, { autoSelect: true });
+
+  info("Create a CSS_MIXED type autocomplete");
+  await new Promise(resolve => {
+    createInplaceEditorAndClick(
+      {
+        initial: "style=",
+        start: runAutocompletionTest,
+        contentType: InplaceEditor.CONTENT_TYPES.CSS_MIXED,
+        done: resolve,
+        popup,
+        cssProperties: {
+          getNames: () => Object.keys(mockValues),
+          getValues: propertyName => mockValues[propertyName] || [],
+        },
+      },
+      doc
+    );
+  });
+
+  popup.destroy();
+  host.destroy();
+  gBrowser.removeCurrentTab();
+});
+
+const runAutocompletionTest = async function (editor) {
+  info("Starting autocomplete test for inplace-editor popup offset");
+  let previousOffset = -1;
+  for (const data of testData) {
+    if (data[0] === "checkPopupOffset") {
+      info("Check the popup offset has been modified");
+      // We are not testing hard coded offset values here, which could be fragile. We only
+      // want to ensure the popup tries to match the position of the query in the editor
+      // input.
+      const offset = getPopupOffset(editor);
+      Assert.greater(
+        offset,
+        previousOffset,
+        "New popup offset is greater than the previous one"
+      );
+      previousOffset = offset;
+    } else {
+      await testCompletion(data, editor);
+    }
+  }
+
+  EventUtils.synthesizeKey("VK_RETURN", {}, editor.input.defaultView);
+};
+
+/**
+ * Get the autocomplete panel left offset, relative to the provided input's left offset.
+ */
+function getPopupOffset({ popup, input }) {
+  const popupQuads = popup._panel.getBoxQuads({ relativeTo: input });
+  return popupQuads[0].getBounds().left;
+}