Joseph Doherty
e0ec2a0507
An OperationCanceledException escaping RunAsync after ApplicationStopping has fired (WindowsServiceLifetime.StopAsync gets a cancelled token after shutdown finished) is a normal stop. Program.IsGracefulShutdown now routes it to an Information line; any other exception, or a cancellation with no shutdown requested, still logs Fatal and rethrows.
40 lines
1.5 KiB
C#
40 lines
1.5 KiB
C#
namespace ZB.MOM.WW.ScadaBridge.Host.Tests;
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/// <summary>
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/// ScadaBridge#76: a routine Windows service stop must not be logged as
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/// <c>[FTL] host terminated unexpectedly</c>.
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/// </summary>
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public class GracefulShutdownTests
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{
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/// <summary>A cancellation escaping RunAsync after ApplicationStopping fired is a routine stop.</summary>
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[Fact]
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public void Cancellation_AfterStopRequested_IsGraceful()
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{
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using var cts = new CancellationTokenSource();
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cts.Cancel();
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Assert.True(Program.IsGracefulShutdown(new OperationCanceledException(), cts.Token));
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Assert.True(Program.IsGracefulShutdown(new TaskCanceledException(), cts.Token));
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}
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/// <summary>A cancellation with no shutdown requested is still a genuine failure.</summary>
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[Fact]
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public void Cancellation_WithoutStopRequested_IsNotGraceful()
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{
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using var cts = new CancellationTokenSource();
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Assert.False(Program.IsGracefulShutdown(new OperationCanceledException(), cts.Token));
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Assert.False(Program.IsGracefulShutdown(new OperationCanceledException(), CancellationToken.None));
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}
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/// <summary>A real fault during shutdown must still be reported as fatal.</summary>
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[Fact]
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public void NonCancellationException_IsNeverGraceful()
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{
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using var cts = new CancellationTokenSource();
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cts.Cancel();
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Assert.False(Program.IsGracefulShutdown(new InvalidOperationException("boom"), cts.Token));
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}
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}
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