1 files changed, 67 insertions, 0 deletions
diff --git a/testing/web-platform/tests/shadow-dom/focus-navigation/focus-navigation-slots.html b/testing/web-platform/tests/shadow-dom/focus-navigation/focus-navigation-slots.html
new file mode 100644
index 0000000000..f2de50f6eb
--- /dev/null
+++ b/testing/web-platform/tests/shadow-dom/focus-navigation/focus-navigation-slots.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="resources/shadow-dom.js"></script>
+<script src="resources/focus-utils.js"></script>
+<div id="log"></div>
+<p>
+  document tree: [i0 -> [x-foo]]<br>
+  x-foo's shadow tree: [j1 -> [s1] -> [s2] -> j2 ->[x-bar]]<br>
+  x-bar's shadow tree: [k1 -> [s3]]<br>
+  slot #s1: [i1 -> i2]<br>
+  slot #s2: [i3]<br>
+  slot #s3: [[s4]]<br>
+  slot #s4: [i4 -> i5]<br><br>
+  <b>v1 ideal nav forward:  [i0 -> j1 -> i1 -> i2 -> i3 -> j2 -> x-bar -> k1 -> i4 -> i5]</b><br>
+</p>
+
+<input id="i0" tabindex=0 value="i0">
+<div id="x-foo">
+  <input id="i2" slot="s1" tabindex=2 value="i2">
+  <input id="i1" slot="s1" tabindex=1 value="i1">
+  <input id="i3" slot="s2" tabindex=3 value="i3">
+  <input id="i4" slot="s4" tabindex=4 value="i4">
+  <input id="i5" slot="s4" tabindex=5 value="i5">
+  <template data-mode="open">
+    <div id="x-bar" tabindex=5>
+      <slot id="s4" name="s4" slot="s3"></slot>
+      <template data-mode="open">
+        <slot id="s3" name="s3" tabindex=2></slot>
+        <input id="k1" tabindex=1 value="k1">
+      </template>
+    </div>
+    <input id="j1" tabindex=1 value="j1">
+    <slot id="s2" name="s2" tabindex=3></slot>
+    <slot id="s1" name="s1" tabindex=2></slot>
+    <input id="j2" tabindex=4 value="j2">
+  </template>
+</div>
+
+<script>
+'use strict';
+
+promise_test(async () => {
+    let xfoo = document.getElementById('x-foo');
+    convertTemplatesToShadowRootsWithin(xfoo);
+
+    let elements = [
+        'i0',
+        'x-foo/j1',
+        'i1',
+        'i2',
+        'i3',
+        'x-foo/j2',
+        'x-foo/x-bar',
+        'x-foo/x-bar/k1',
+        'i4',
+        'i5'
+    ];
+
+    await assert_focus_navigation_forward(elements);
+    elements.reverse();
+    await assert_focus_navigation_backward(elements);
+}, 'Focus should cover assigned elements of an assigned slot, as well as elements that are directly assigned to a slot.');
+</script>