1 files changed, 39 insertions, 0 deletions
diff --git a/gfx/layers/apz/test/mochitest/helper_zoomToFocusedInput_zoom.html b/gfx/layers/apz/test/mochitest/helper_zoomToFocusedInput_zoom.html
new file mode 100644
index 0000000000..c74fe521b4
--- /dev/null
+++ b/gfx/layers/apz/test/mochitest/helper_zoomToFocusedInput_zoom.html
@@ -0,0 +1,39 @@
+<!DOCTYPE>
+<html>
+  <head>
+  <title>Checking zoomToFocusedInput zooms if meta viewport allows it</title>
+  <meta name="viewport" content="width=device-width, height=device-height, initial-scale=0.5 minimum-scale=0.5, maximum-scale=1" />
+  <script type="application/javascript" src="apz_test_utils.js"></script>
+  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>
+  <script src="/tests/SimpleTest/paint_listener.js"></script>
+  </head>
+<body>
+<input id="input1" type="text" style="border: 5px solid black"/>
+<script type="application/javascript">
+async function test() {
+  let utils = SpecialPowers.getDOMWindowUtils(window);
+
+  let resolution = await getResolution();
+  ok(resolution > 0,
+     "The initial_resolution is " + resolution + ", which is some sane value");
+
+  document.getElementById('input1').focus();
+  await waitToClearOutAnyPotentialScrolls(window);
+  await promiseApzFlushedRepaints();
+  let prev_resolution = resolution;
+  resolution = await getResolution();
+  ok(resolution == prev_resolution, "focusing input did not change resolution " + resolution);
+
+  let transformEndPromise = promiseTransformEnd();
+  utils.zoomToFocusedInput();
+  await waitToClearOutAnyPotentialScrolls(window);
+  await transformEndPromise;
+  await promiseApzFlushedRepaints();
+  resolution = await getResolution();
+  ok(resolution != prev_resolution, "zoomToFocusedInput input changed resolution " + resolution);
+}
+
+waitUntilApzStable().then(test).then(subtestDone, subtestFailed);
+</script>
+</body>
+</html>