1 files changed, 41 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-content-before-legend.html b/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-content-before-legend.html
new file mode 100644
index 0000000000..5bd1fbc161
--- /dev/null
+++ b/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-content-before-legend.html
@@ -0,0 +1,41 @@
+<!doctype html>
+<title>fieldset content before legend</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<style>
+fieldset {
+  /* Paddings might have fractional values by default, and they can cause
+     rounding differences between the test element and the reference element. */
+  padding: 0;
+}
+</style>
+
+<fieldset id=test>
+  X
+  <legend>legend</legend>
+  Y
+</fieldset>
+<fieldset id=ref>
+  <legend>legend</legend>
+  X Y
+</fieldset>
+
+<fieldset id="test2">
+  P<span id="hidden" style="display:none;">AS</span><legend>legend</legend>S
+</fieldset>
+
+<script>
+  test(() => {
+    const testElm = document.getElementById('test');
+    const refElm = document.getElementById('ref');
+    assert_equals(testElm.clientHeight, refElm.clientHeight);
+  });
+
+  test(() => {
+    const testElm = document.getElementById('test2');
+    testElm.clientHeight;
+    const span = document.getElementById('hidden');
+    span.style.display = 'inline';
+    testElm.clientHeight;
+  }, 'Showing a node just before the rendered legend should not crash');
+</script>