Rantly#branch で複数のデータタイプからランダムにデータを生成できます
関連記事
サンプル
Rantly(5){ branch :integer , :string, :boolean}
# => [true, "VHxmI)", "^#E;,%", "5!aGIP", "qDx2Mf"]
Rantly(5){ branch :integer , :string, :boolean}
# => [-1665158384696428197, "y-,C2d", -1455156847361017947, "+`.g%)", false]
Rantly(5){ branch :integer , :string, :boolean}
# => [600450864974760975, -1001376245040046707, false, false, false]