namespace Railway.Tests.Errors;

public class Serialization
{
    [Fact]
    public void WhenSerializingManyErrors()
    {
        // Given
        Error many_errors = new ManyErrors(new Error[]{
            new ExpectedError("err1", "msg1"){
                ExtensionData = {
                    ["ext"] = "ext_value"
                }
            },
            new ExceptionalError(new Exception("msg2")),
        });
        // When
        var result = JsonSerializer.Serialize(many_errors);
        // Then
        Assert.Equal(
            expected: "[{\"$$err\":0,\"Type\":\"err1\",\"Message\":\"msg1\",\"ext\":\"ext_value\"},{\"$$err\":1,\"Type\":\"Exception\",\"Message\":\"msg2\"}]",
            result);
    }

    [Fact]
    public void WhenDeserializingManyErrors()
    {
        // Given
        var json = "[{\"$$err\":0,\"Type\":\"err1\",\"Message\":\"msg1\",\"ext\":\"ext_value\"},{\"$$err\":1,\"Type\":\"Exception\",\"Message\":\"msg2\"}]";
        // When
        var result = JsonSerializer.Deserialize<Error[]>(json);
        // Then
        Assert.True(result?.Length == 2);
        Assert.Equal(
            expected: new ManyErrors(new Error[]{
                new ExpectedError("err1", "msg1"),
                new ExceptionalError(new Exception("msg2")),
            }),
            result
        );
        Assert.Equal(
            expected: "ext_value",
            result[0].ExtensionData["ext"].ToString());
    }
}