Merge "Added utility method taking an array of elements and wrapping each element in it's own array."

tests/phpunit/MediaWikiTestCase.php

@@ -385,6 +385,26 @@ abstract class MediaWikiTestCase extends PHPUnit_Framework_TestCase {
 		$this->assertFalse( $r, "found extra row (after #$i)" );
 	}
 
+	/**
+	 * Utility method taking an array of elements and wrapping
+	 * each element in it's own array. Useful for data providers
+	 * that only return a single argument.
+	 *
+	 * @since 1.20
+	 *
+	 * @param array $elements
+	 *
+	 * @return array
+	 */
+	protected function arrayWrap( array $elements ) {
+		return array_map(
+			function( $element ) {
+				return array( $element );
+			},
+			$elements
+		);
+	}
+
 	/**
 	 * Assert that two arrays are equal. By default this means that both arrays need to hold
 	 * the same set of values. Using additional arguments, order and associated key can also