Joseph Doherty
2ef3cd0df2
U2: MaxReadGap defaults to 8 and 0 now means adjacent-only rather than off; a new DisableReadCoalescing switch (factory DTO + AdminUI form) turns it off entirely. The planner also merges Coils/DiscreteInputs (FC01/FC02, gap in bits), String scalars and BitInRegister tags - sixteen bit tags on one status word are one FC03 instead of sixteen. Auto-prohibition and its re-probe / bisection use the region's own function code (a coil range was re-probed with FC04). Refs #741 Claude-Session: https://claude.ai/code/session_01Ub9hGmYLQvn9XETzw7CMsT
60 lines
2.5 KiB
C#
60 lines
2.5 KiB
C#
using System.Collections.Concurrent;
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namespace ZB.MOM.WW.OtOpcUa.Driver.Modbus.Tests;
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/// <summary>
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/// In-memory transport whose every send is answered by a test-supplied handler; falls back to the
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/// register/coil bank fake (<see cref="ModbusDriverTests.FakeTransport"/>) when the handler returns null.
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/// Counts sends per unit and dispose calls; the connect can be blocked on a gate.
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/// </summary>
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internal sealed class ScriptedTransport : IModbusTransport
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{
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private readonly ConcurrentDictionary<byte, int> _sendsByUnit = new();
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private int _disposeCount;
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/// <summary>The bank answering un-scripted sends.</summary>
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public ModbusDriverTests.FakeTransport Bank { get; } = new();
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/// <summary>Per-send handler; return null to fall through to <see cref="Bank"/>.</summary>
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public Func<byte, byte[], CancellationToken, Task<byte[]>?>? Handler { get; set; }
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/// <summary>When set, <see cref="ConnectAsync"/> waits for it before completing.</summary>
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public TaskCompletionSource? ConnectGate { get; set; }
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/// <summary>Signalled when <see cref="ConnectAsync"/> is entered.</summary>
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public TaskCompletionSource ConnectEntered { get; } = new(TaskCreationOptions.RunContinuationsAsynchronously);
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public int DisposeCount => Volatile.Read(ref _disposeCount);
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public int SendsTo(byte unit) => _sendsByUnit.TryGetValue(unit, out var n) ? n : 0;
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public int TotalSends => _sendsByUnit.Values.Sum();
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/// <summary>Every PDU sent, in order.</summary>
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public ConcurrentQueue<(byte Unit, byte[] Pdu)> Sent { get; } = new();
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/// <summary>The (function code, start, quantity) of every sent request with that function code.</summary>
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public List<(byte Fc, ushort Start, ushort Qty)> Requests(byte fc) =>
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[.. Sent.Where(s => s.Pdu[0] == fc).Select(s => (s.Pdu[0], (ushort)((s.Pdu[1] << 8) | s.Pdu[2]), (ushort)((s.Pdu[3] << 8) | s.Pdu[4])))];
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public async Task ConnectAsync(CancellationToken ct)
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{
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ConnectEntered.TrySetResult();
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if (ConnectGate is { } gate) await gate.Task.WaitAsync(ct);
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}
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public Task<byte[]> SendAsync(byte unitId, byte[] pdu, CancellationToken ct)
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{
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_sendsByUnit.AddOrUpdate(unitId, 1, (_, n) => n + 1);
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Sent.Enqueue((unitId, pdu));
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var scripted = Handler?.Invoke(unitId, pdu, ct);
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return scripted ?? Bank.SendAsync(unitId, pdu, ct);
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}
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public ValueTask DisposeAsync()
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{
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Interlocked.Increment(ref _disposeCount);
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return ValueTask.CompletedTask;
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}
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}
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