diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_variables-view-popup-14.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_variables-view-popup-14.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests that the variable inspection popup is hidden when
+ * selecting text in the editor.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_frame-parameters.html";
+
+function test() {
+  Task.spawn(function*() {
+    let [tab, debuggee, panel] = yield initDebugger(TAB_URL);
+    let win = panel.panelWin;
+    let bubble = win.DebuggerView.VariableBubble;
+
+    // Allow this generator function to yield first.
+    executeSoon(() => debuggee.start());
+    yield waitForSourceAndCaretAndScopes(panel, ".html", 24);
+
+    // Select some text.
+    let cursor = win.DebuggerView.editor.getOffset({ line: 15, ch: 12 });
+    let [ anchor, head ] = win.DebuggerView.editor.getPosition(
+      cursor,
+      cursor + 3
+    );
+    win.DebuggerView.editor.setSelection(anchor, head);
+
+    // Try to Inspect variable during selection.
+    let popupOpened = yield intendOpenVarPopup(panel, { line: 15, ch: 12 }, true);
+
+    // Ensure the bubble is not there
+    ok(!popupOpened,
+      "The popup is not opened");
+    ok(!bubble._markedText,
+      "The marked text in the editor is not there.");
+
+    // Try to Inspect variable after selection.
+    popupOpened = yield intendOpenVarPopup(panel, { line: 15, ch: 12 }, false);
+
+    // Ensure the bubble is not there
+    ok(popupOpened,
+      "The popup is opened");
+    ok(bubble._markedText,
+      "The marked text in the editor is there.");
+
+    yield resumeDebuggerThenCloseAndFinish(panel);
+  });
+}