Joseph Doherty
34 lines
1.5 KiB
C#
34 lines
1.5 KiB
C#
using Shouldly;
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using Xunit;
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namespace ZB.MOM.WW.OtOpcUa.Driver.Modbus.Tests;
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/// <summary>
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/// Pins the socket-lifecycle surface extracted from <see cref="ModbusTcpTransport"/> into the
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/// reusable <see cref="ModbusSocketLifecycle"/> (Task 3). The clamp helper moved with it, and a
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/// connect to a dead port must still surface the underlying socket failure.
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/// </summary>
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[Trait("Category", "Unit")]
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public sealed class ModbusSocketLifecycleTests
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{
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/// <summary>Verifies the whole-seconds clamp rounds sub-second/negative durations up to a minimum of one.</summary>
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/// <param name="seconds">The input duration in seconds.</param>
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/// <param name="expected">The expected clamped value in whole seconds.</param>
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[Theory]
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[InlineData(0.4, 1)] // sub-second rounds up to 1 (the int-cast truncation guard)
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[InlineData(2.0, 2)]
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[InlineData(-5.0, 1)] // negative clamps to 1
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public void ClampToWholeSeconds_rounds_up_min_one(double seconds, int expected)
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=> ModbusSocketLifecycle.ClampToWholeSeconds(TimeSpan.FromSeconds(seconds)).ShouldBe(expected);
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/// <summary>Verifies a connect to a dead port surfaces the underlying socket failure.</summary>
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[Fact]
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public async Task Connect_to_dead_port_surfaces_socket_failure()
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{
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var life = new ModbusSocketLifecycle("127.0.0.1", 1, TimeSpan.FromMilliseconds(300),
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autoReconnect: false);
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await Should.ThrowAsync<System.Net.Sockets.SocketException>(
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life.ConnectAsync(TestContext.Current.CancellationToken));
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}
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}
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