1 files changed, 50 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/legend-align.html b/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/legend-align.html
new file mode 100644
index 0000000000..e774599819
--- /dev/null
+++ b/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/legend-align.html
@@ -0,0 +1,50 @@
+<!doctype html>
+<title>legend align</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<fieldset><legend align=left>x</legend></fieldset>
+<fieldset><legend align=center>x</legend></fieldset>
+<fieldset><legend align=right>x</legend></fieldset>
+<fieldset><legend align=justify>x</legend></fieldset>
+<div align=left>
+ <fieldset><legend>x</legend></fieldset>
+</div>
+<div align=center>
+ <fieldset><legend>x</legend></fieldset>
+</div>
+<div align=right>
+ <fieldset><legend>x</legend></fieldset>
+</div>
+<div align=justify>
+ <fieldset><legend>x</legend></fieldset>
+</div>
+<div style="text-align: center">
+ <fieldset><legend>x</legend></fieldset>
+</div>
+<div style="text-align: center" align=center>
+ <fieldset><legend>x</legend></fieldset>
+</div>
+<fieldset><legend style="margin: 0 auto">x</legend></fieldset>
+<fieldset><legend style="margin: 0 0 0 auto">x</legend></fieldset>
+<fieldset dir=rtl><legend>x</legend></fieldset>
+<fieldset dir=rtl><legend style="text-align: left">x</legend></fieldset>
+<script>
+function test_align(selectorTest, selectorRef) {
+  const testElm = document.querySelector(selectorTest);
+  const refElm = document.querySelector(selectorRef);
+  test(() => {
+    assert_equals(testElm.offsetLeft, refElm.offsetLeft, `expected ${selectorRef}`);
+  }, selectorTest);
+}
+
+for (const val of ['left', 'center', 'right', 'justify']) {
+  test_align(`div[align=${val}] legend`, `legend[align=left]`);
+}
+
+test_align(`div[style="text-align: center"] legend`, `legend[align=left]`);
+test_align(`div[style="text-align: center"][align=center] legend`, `legend[align=left]`);
+test_align(`legend[style="margin: 0 auto"]`, `legend[align=center]`);
+test_align(`legend[style="margin: 0 0 0 auto"]`, `legend[align=right]`);
+test_align(`fieldset[dir=rtl] legend`, `legend[align=right]`);
+test_align(`fieldset[dir=rtl] legend[style="text-align: left"]`, `legend[align=right]`);
+</script>