1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/document-metadata/the-meta-element/pragma-directives/http-equiv-enumerated-ascii-case-insensitive.html b/testing/web-platform/tests/html/semantics/document-metadata/the-meta-element/pragma-directives/http-equiv-enumerated-ascii-case-insensitive.html
new file mode 100644
index 0000000000..6d19be4149
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/document-metadata/the-meta-element/pragma-directives/http-equiv-enumerated-ascii-case-insensitive.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<link rel="help" href="https://html.spec.whatwg.org/#attr-meta-http-equiv">
+<link rel="help" href="https://html.spec.whatwg.org/#enumerated-attribute">
+<meta name="assert" content="meta@http-equiv values are ASCII case-insensitive">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+async_test(function() {
+  let loaded = 0;
+
+  // we use a message rather than the iframe’s load event to avoid dealing with
+  // spurious load events that some browsers dispatch on the initial about:blank
+  addEventListener("message", this.step_func(event => {
+    if (++loaded == 3) {
+      const iframe = document.querySelectorAll("iframe");
+
+      assert_equals(iframe[0].contentWindow.inline,
+        undefined, "lowercase valid");
+      assert_equals(iframe[1].contentWindow.inline,
+        undefined, "mixed case valid");
+      assert_equals(iframe[2].contentWindow.inline,
+        true, "non-ASCII invalid");
+
+      this.done();
+    }
+  }));
+}, "keyword content-security-policy");
+</script>
+<iframe src="http-equiv-enumerated-ascii-case-insensitive-lower.html"></iframe>
+<iframe src="http-equiv-enumerated-ascii-case-insensitive-mixed.html"></iframe>
+<iframe src="http-equiv-enumerated-ascii-case-insensitive-other.html"></iframe>