public async Task Base64UrlSafeEncode(string value, string expected)
{
// Arrange
var input = new StringValue(value);
var arguments = new FilterArguments();
var context = new TemplateContext();
// Act
var result = await MiscFilters.Base64UrlSafeEncode(input, arguments, context);
// Assert
Assert.Equal(expected, result.ToStringValue());
}