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-rw-r--r--testing/web-platform/tests/css/css-text/parsing/letter-spacing-valid.html11
1 files changed, 9 insertions, 2 deletions
diff --git a/testing/web-platform/tests/css/css-text/parsing/letter-spacing-valid.html b/testing/web-platform/tests/css/css-text/parsing/letter-spacing-valid.html
index 740d1fc398..f20fa21de1 100644
--- a/testing/web-platform/tests/css/css-text/parsing/letter-spacing-valid.html
+++ b/testing/web-platform/tests/css/css-text/parsing/letter-spacing-valid.html
@@ -4,7 +4,7 @@
<meta charset="utf-8">
<title>CSS Text Module Test: parsing letter-spacing with valid values</title>
<link rel="help" href="https://www.w3.org/TR/css-text-3/#propdef-letter-spacing">
-<meta name="assert" content="letter-spacing supports the full grammar 'normal | <length>'.">
+<meta name="assert" content="letter-spacing supports the full grammar 'normal | <length-percentage>'.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
@@ -12,10 +12,17 @@
<body>
<script>
test_valid_value("letter-spacing", "normal");
-
test_valid_value("letter-spacing", "0", "0px");
+
test_valid_value("letter-spacing", "-10px");
+test_valid_value("letter-spacing", "20px");
test_valid_value("letter-spacing", "calc(2em + 3ex)");
+
+// Level 4 adds percentages
+test_valid_value("letter-spacing", "120%");
+test_valid_value("letter-spacing", "-10%");
+test_valid_value("letter-spacing", "calc(2ch - 30%)", "calc(-30% + 2ch)");
+test_valid_value("letter-spacing", "calc(40% + 50px)");
</script>
</body>
</html>