Add alternative snapshots for decimal values about snapper

[DavidInterad]

Yes, I already updated and configured the serializer as I need it. Works great.

For anyone interested in the same:
My solution was to create a decimal serializer which keeps only the first decimal to keep the info that it is a decimal number and not an integer (e.g. 1.0 instead of 1)

    public class DecimalJsonConverter : JsonConverter<decimal>
    {
        public override decimal ReadJson(
            JsonReader reader, Type objectType, decimal existingValue, bool hasExistingValue, JsonSerializer serializer)
        {
            throw new NotImplementedException();
        }
        public override void WriteJson(JsonWriter writer, decimal value, JsonSerializer serializer)
        {
            // Customise how you want the decimal value to be output in here
            // for example, you may want to consider culture
            writer.WriteRawValue(value.ToString("0.0##############", CultureInfo.InvariantCulture));
        }
    }

and then set it before any tests using this code here (I'm using MsTest on this project):

    [TestClass]
    public static class TestInitialize
    {
        [AssemblyInitialize]
        public static void BeforeAllTests(TestContext testContext)
        {
            SnapshotSettings.GlobalSnapshotSerialiserSettings = s =>
            {
                s.Converters.Add(new CerFin.TestHelpers.DecimalJsonConverter());
            };
        }
    }

[theramis]

Closing as its been a while with no response and there is a suggested solution.

[aaron-manning]

This is an issue for me. keep getting false negatives in CI

On one build 10.1 is 10.1, the next it's 10.10

Haven't found a solution yet other than to convert the value to a string before snapshotting

[theramis]

Hey @Dehalion and @aaron-manning ,

Just added Custom Snapshot Settings in the latest version 2.4.0. See the docs here.

You should be able to customise Newtonsoft as you like to make sure this isn't an issue.
That should hopefully solve your issue?