Pass font options in accents

Accents such as \widetilde did not pass
their font options to their child element.

* Pass options
* Add test
* In I6924d712db6852f99d7896b1f11cfbd22851d757
  curly learned to encapsulate its output in a
  mrow. Thus, the if-clause is no longer needed.

Bug: T352609
Change-Id: I81ecda09d017c73a4593ae36c630426229c7559f

src/WikiTexVC/MMLmappings/BaseParsing.php

@@ -71,21 +71,13 @@ class BaseParsing {
 			$entity = $accent;
 		}
 
-		if ( $node->getArg() instanceof Curly && $node->getArg()->getArg() instanceof TexArray
-			&& count( $node->getArg()->getArg()->getArgs() ) > 1 ) {
-			$mrow = new MMLmrow();
-			$renderedArg = $mrow->encapsulateRaw( $node->getArg()->renderMML() );
-		} else {
-			$renderedArg = $node->getArg()->renderMML();
-		}
-
 		$mrow = new MMLmrow();
 		$mo = new MMLmo( "", $attrs ); // $passedArgs
 		$mover = new MMLmover();
 		$ret = $mrow->encapsulateRaw(
 			$mrow->encapsulateRaw(
 				$mover->encapsulateRaw(
-					$renderedArg .
+					$node->getArg()->renderMML( $passedArgs ) .
 					$mo->encapsulateRaw( $entity )
 				)
 			)

tests/phpunit/unit/WikiTexVC/MMLmappings/BaseParsingTest.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace MediaWiki\Extension\Math\Tests\WikiTexVC\MMLmappings;
+
+use MediaWiki\Extension\Math\WikiTexVC\MMLmappings\BaseParsing;
+use MediaWiki\Extension\Math\WikiTexVC\Nodes\Fun1;
+use MediaWiki\Extension\Math\WikiTexVC\Nodes\Literal;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \MediaWiki\Extension\Math\WikiTexVC\MMLmappings\BaseParsing
+ */
+class BaseParsingTest extends TestCase {
+
+	public function testAccent() {
+		$node = new Fun1(
+			'\\widetilde',
+				( new Literal( 'a' ) )
+			);
+		$result = BaseParsing::accent( $node, [], null, 'widetilde', '007E' );
+		$this->assertStringContainsString( '~', $result );
+		$this->assertStringContainsString( 'mover', $result );
+	}
+
+	public function testAccentArgPassing() {
+		$node = new Fun1(
+			'\\widetilde',
+			( new Literal( 'a' ) )
+		);
+		$result = BaseParsing::accent( $node, [ 'k' => 'v' ], null, 'widetilde', '007E' );
+		$this->assertStringContainsString( '<mi k="v"', $result );
+	}
+}