public void TestSimpleCondition()
{
string expression = "Name eq 'Australia'";
var countries = languageProcessor.Find(allCountries, expression);
countries.Should().Contain(allCountries.Last());
countries.Count.Should().IsSameOrEqualTo(1);
}
static async Task Main()
{
LanguageProcessor languageProcessor = new LanguageProcessor();
var allCountries = await InitCountriesAsync();
Console.WriteLine("Data set:");
Console.WriteLine(Encoding.UTF8.GetString(JsonSerializer.SerializeToUtf8Bytes(allCountries, options: new JsonSerializerOptions()
{
WriteIndented = true
})));
do
{
Console.WriteLine();
Console.WriteLine("Please enter expression, e.g: Name eq 'Australia' or Population ge 100 and Population lt 201");
Console.WriteLine($"Available operators: { string.Join(',', Enum.GetValues<Operator>())}");
string expression = Console.ReadLine();
if (string.IsNullOrEmpty(expression))
{
break;
}
try
{
var countries = languageProcessor.Find(allCountries, expression);
if (countries.Any())
{
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("Matching countries:");
foreach (var country in countries)
{
Console.Write($"{country.Name}; ");
}
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine();
}
else
{
Console.WriteLine("Couldn't find any matching countries");
}
}
catch (ExpressionInvalidException ex)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"{ex.Message}: {ex.Details}");
Console.ForegroundColor = ConsoleColor.White;
}
catch (Exception)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"Something went wrong, please try again");
Console.ForegroundColor = ConsoleColor.White;
}
}while (true);
}
