Joseph Doherty
76 lines
2.9 KiB
C#
76 lines
2.9 KiB
C#
using System.Text.Json;
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using System.Text.Json.Serialization;
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using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers.Forms;
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using ZB.MOM.WW.OtOpcUa.Driver.Modbus;
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namespace ZB.MOM.WW.OtOpcUa.AdminUI.Tests.Uns;
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/// <summary>
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/// Round-trip + enum-serialization guard for the Modbus <b>driver</b> (channel/protocol) form model.
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/// Reproduces the historical driver-enum-serialization bug: enums MUST serialize as their name strings
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/// (JsonStringEnumConverter) with camelCase keys, or the runtime factory faults on the numeric form.
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/// </summary>
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public sealed class ModbusDriverFormModelTests
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{
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private static readonly JsonSerializerOptions JsonOpts = new()
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{
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PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
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UnmappedMemberHandling = JsonUnmappedMemberHandling.Skip,
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WriteIndented = false,
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Converters = { new JsonStringEnumConverter() },
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};
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[Fact]
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public void Round_trip_preserves_channel_fields_and_enum()
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{
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var form = new ModbusDriverForm.FormModel
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{
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Family = ModbusFamily.MELSEC,
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MelsecSubFamily = MelsecFamily.Q_L_iQR,
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TimeoutSeconds = 4,
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MaxRegistersPerRead = 100,
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WriteOnChangeOnly = true,
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KeepAliveRetryCount = 5,
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ReconnectBackoffMultiplier = 3.0,
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ProbeAddress = 40,
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};
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var json = JsonSerializer.Serialize(form.ToOptions(), JsonOpts);
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var back = ModbusDriverForm.FormModel.FromOptions(
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JsonSerializer.Deserialize<ModbusDriverOptions>(json, JsonOpts)!);
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back.Family.ShouldBe(ModbusFamily.MELSEC);
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back.MelsecSubFamily.ShouldBe(MelsecFamily.Q_L_iQR);
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back.TimeoutSeconds.ShouldBe(4);
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back.MaxRegistersPerRead.ShouldBe(100);
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back.WriteOnChangeOnly.ShouldBeTrue();
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back.KeepAliveRetryCount.ShouldBe(5);
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back.ReconnectBackoffMultiplier.ShouldBe(3.0);
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back.ProbeAddress.ShouldBe(40);
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}
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[Fact]
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public void Serialized_config_uses_camelCase_keys_and_enum_names()
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{
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var form = new ModbusDriverForm.FormModel { Family = ModbusFamily.MELSEC };
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var json = JsonSerializer.Serialize(form.ToOptions(), JsonOpts);
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json.ShouldContain("\"family\":\"MELSEC\""); // enum-as-name (not a number), camelCase key
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json.ShouldNotContain("\"family\":0", Case.Sensitive); // never the numeric enum form
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}
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[Fact]
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public void Round_trip_preserves_Transport_mode()
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{
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var form = new ModbusDriverForm.FormModel { Transport = ModbusTransportMode.RtuOverTcp };
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var json = JsonSerializer.Serialize(form.ToOptions(), JsonOpts);
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var back = ModbusDriverForm.FormModel.FromOptions(
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JsonSerializer.Deserialize<ModbusDriverOptions>(json, JsonOpts)!);
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back.Transport.ShouldBe(ModbusTransportMode.RtuOverTcp);
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json.ShouldContain("\"transport\":\"RtuOverTcp\""); // name string, never a number
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}
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}
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