public function test_populate_site_meta( $meta, $expected ) {
    global $wpdb;

    $orig_blogmeta  = $wpdb->blogmeta;
    $wpdb->blogmeta = self::$blogmeta;

    populate_site_meta( 42, $meta );

    $results = array();
    foreach ( $expected as $meta_key => $value ) {
      $results[ $meta_key ] = get_site_meta( 42, $meta_key, true );
    }

    $wpdb->query( "TRUNCATE TABLE {$wpdb->blogmeta}" );

    $wpdb->blogmeta = $orig_blogmeta;

    $this->assertSame( $expected, $results );
  }