Part 2 - EnumerationJsonConverterTests

EnumerationJsonConverterTests.cs

// Import System.Text.Json;

public class EnumerationJsonConverterTests
{
    private readonly ITestOutputHelper _testOutputHelper;

    public EnumerationJsonConverterTests(ITestOutputHelper testOutputHelper)
    {
        _testOutputHelper = testOutputHelper;
    }

    [Fact]
    public void EnumerationIsSerializesAndDeserializesCorrectly()
    {
        var expected = new Transaction
        {
            Amount = 100,
            PaymentType = PaymentType.CreditCard
        };

        var json = JsonSerializer.Serialize(expected,
            new JsonSerializerOptions
            {
                Converters =
                {
                    new EnumerationJsonConverter()
                }
            });

        _testOutputHelper.WriteLine(json);

        var actual= JsonSerializer.Deserialize<Transaction>(json, new JsonSerializerOptions()
        {
            Converters = { new EnumerationJsonConverter() }
        });

        Assert.Equal(expected.Amount, actual.Amount);
        Assert.Equal(expected.PaymentType, actual.PaymentType);
    }
}