Squiz/EmbeddedPhp: add dedicated tests related to ignoring of first open tag

Author: jrfnl

src/Standards/Squiz/Tests/PHP/EmbeddedPhpUnitTest.6.inc

@@ -0,0 +1,8 @@
+<?php
+    echo 'This line has the wrong indent'
+        . ' and the close tag is not on its own line, but this will not be fixed'
+        . ' as multi-line code blocks for the first PHP open tag will always be ignored'; ?>
+
+<?php
+// Placeholder just to ensure the above is ignored solely because it is the first open tag, not
+// because the conditions related to the _last_ open tag kick in.

src/Standards/Squiz/Tests/PHP/EmbeddedPhpUnitTest.7.inc

@@ -0,0 +1,8 @@
+<?=
+    'This line has the wrong indent'
+    . ' and the close tag is not on its own line, but this will not be fixed'
+    . ' as multi-line code blocks for the first PHP open tag will always be ignored'; ?>
+
+<?php
+// Placeholder just to ensure the above is ignored solely because it is the first open tag, not
+// because the conditions related to the _last_ open tag kick in.