1 files changed, 67 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg_variables-view-popup-10.js b/devtools/client/debugger/test/mochitest/browser_dbg_variables-view-popup-10.js
new file mode 100644
index 000000000..15dd02c44
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg_variables-view-popup-10.js
@@ -0,0 +1,67 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Makes sure the source editor's scroll location doesn't change when
+ * a variable inspection popup is opened and a watch expression is
+ * also evaluated at the same time.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_frame-parameters.html";
+
+function test() {
+  Task.spawn(function* () {
+    let options = {
+      source: TAB_URL,
+      line: 1
+    };
+    let [tab,, panel] = yield initDebugger(TAB_URL, options);
+    let win = panel.panelWin;
+    let events = win.EVENTS;
+    let editor = win.DebuggerView.editor;
+    let editorContainer = win.document.getElementById("editor");
+    let bubble = win.DebuggerView.VariableBubble;
+    let expressions = win.DebuggerView.WatchExpressions;
+    let tooltip = bubble._tooltip.panel;
+
+    let onCaretAndScopes = waitForCaretAndScopes(panel, 24);
+    callInTab(tab, "start");
+    yield onCaretAndScopes;
+
+    let expressionsEvaluated = waitForDebuggerEvents(panel, events.FETCHED_WATCH_EXPRESSIONS);
+    expressions.addExpression("this");
+    editor.focus();
+    yield expressionsEvaluated;
+
+    // Scroll to the top of the editor and inspect variables.
+    let breakpointScrollPosition = editor.getScrollInfo().top;
+    editor.setFirstVisibleLine(0);
+    let topmostScrollPosition = editor.getScrollInfo().top;
+
+    ok(topmostScrollPosition < breakpointScrollPosition,
+      "The editor is now scrolled to the top (0).");
+    is(editor.getFirstVisibleLine(), 0,
+      "The editor is now scrolled to the top (1).");
+
+    let failPopup = () => ok(false, "The popup has got unexpectedly hidden.");
+    let failScroll = () => ok(false, "The editor has got unexpectedly scrolled.");
+    tooltip.addEventListener("popuphiding", failPopup);
+    editorContainer.addEventListener("scroll", failScroll);
+    editor.on("scroll", () => {
+      if (editor.getScrollInfo().top > topmostScrollPosition) {
+        ok(false, "The editor scrolled back to the breakpoint location.");
+      }
+    });
+
+    expressionsEvaluated = waitForDebuggerEvents(panel, events.FETCHED_WATCH_EXPRESSIONS);
+    yield openVarPopup(panel, { line: 14, ch: 15 });
+    yield expressionsEvaluated;
+
+    tooltip.removeEventListener("popuphiding", failPopup);
+    editorContainer.removeEventListener("scroll", failScroll);
+
+    yield resumeDebuggerThenCloseAndFinish(panel);
+  });
+}