1 files changed, 52 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-pause-ux.js b/devtools/client/debugger/test/mochitest/browser_dbg-pause-ux.js
new file mode 100644
index 0000000000..689324ca50
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-pause-ux.js
@@ -0,0 +1,52 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+"use strict";
+
+add_task(async function () {
+  const dbg = await initDebugger("doc-scripts.html");
+
+  // Make sure that we can set a breakpoint on a line out of the
+  // viewport, and that pausing there scrolls the editor to it.
+  const longSrc = findSource(dbg, "long.js");
+  await selectSource(dbg, "long.js");
+  await addBreakpoint(dbg, longSrc, 66);
+  invokeInTab("testModel");
+  await waitForPaused(dbg, "long.js");
+
+  const pauseScrollTop = getScrollTop(dbg);
+
+  info("1. adding a breakpoint should not scroll the editor");
+  getCM(dbg).scrollTo(0, 0);
+  await addBreakpoint(dbg, longSrc, 11);
+  is(getScrollTop(dbg), 0, "scroll position");
+
+  info("2. searching should jump to the match");
+  pressKey(dbg, "fileSearch");
+  type(dbg, "check");
+
+  const cm = getCM(dbg);
+  await waitFor(
+    () => cm.getSelection() == "check",
+    "Wait for actual selection in CodeMirror"
+  );
+  is(
+    cm.getCursor().line,
+    26,
+    "The line of first check occurence in long.js is selected (this is zero-based)"
+  );
+  // The column is the end of "check", so after 'k'
+  is(
+    cm.getCursor().ch,
+    51,
+    "The column of first check occurence in long.js is selected (this is zero-based)"
+  );
+
+  const matchScrollTop = getScrollTop(dbg);
+  Assert.notEqual(pauseScrollTop, matchScrollTop, "did not jump to debug line");
+});
+
+function getScrollTop(dbg) {
+  return getCM(dbg).doc.scrollTop;
+}