Test blank selector

Author: nielsdos

ext/dom/tests/querySelector/pseudo_classes_blank.phpt

@@ -0,0 +1,23 @@
+--TEST--
+CSS Selectors - Pseudo classes: blank
+--EXTENSIONS--
+dom
+--FILE--
+<?php
+
+require __DIR__ . '/test_utils.inc';
+
+$dom = DOM\XMLDocument::createFromString(<<<XML
+<container/>
+XML);
+
+try {
+    test_helper($dom, ':blank');
+} catch (Error $e) {
+    echo $e->getMessage(), "\n";
+}
+
+?>
+--EXPECT--
+--- Selector: :blank ---
+DOM\Document::querySelectorAll(): Argument #1 ($selectors) :blank selector is not implemented because CSSWG has not yet decided its semantics (https://github.com/w3c/csswg-drafts/issues/1967)