public void GenerateReturnsRandomValueTest()
{
var target = new PostCodeValueGenerator();
var first = target.Generate(typeof(string), "zip", null);
first.Should().BeOfType<string>();
first.As<string>().Should().NotBeNullOrWhiteSpace();
var second = target.Generate(typeof(string), "zip", null);
first.Should().NotBe(second);
}