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Add probe/stale tag monitoring tests

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Cover the full probe staleness detection path that was previously
untested: stale probe forces reconnect, data changes prevent false
staleness, no-probe config skips staleness check, probe tag subscribed
on connect and protected from unsubscribe.

5 new tests, 184 total passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-03-25 06:10:49 -04:00
parent 72d7a21a9d
commit a0edac81fb
2 changed files with 108 additions and 0 deletions
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32
tests/ZB.MOM.WW.LmxOpcUa.Tests/MxAccess/MxAccessClientSubscriptionTests.cs
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@@ -101,5 +101,37 @@ namespace ZB.MOM.WW.LmxOpcUa.Tests.MxAccess
_proxy.SimulateDataChangeByAddress("TestTag.Attr", "value", 192);
callbackInvoked.ShouldBe(true);
}
[Fact]
public async Task ProbeTag_SubscribedOnConnect()
{
var proxy = new FakeMxProxy();
var config = new MxAccessConfiguration { ProbeTag = "TestProbe" };
var client = new MxAccessClient(_staThread, proxy, config, _metrics);
await client.ConnectAsync();
// Probe tag should be subscribed (present in proxy items)
proxy.Items.Values.ShouldContain("TestProbe");
client.Dispose();
}
[Fact]
public async Task ProbeTag_ProtectedFromUnsubscribe()
{
var proxy = new FakeMxProxy();
var config = new MxAccessConfiguration { ProbeTag = "TestProbe" };
var client = new MxAccessClient(_staThread, proxy, config, _metrics);
await client.ConnectAsync();
proxy.Items.Values.ShouldContain("TestProbe");
// Attempt to unsubscribe the probe tag — should be protected
await client.UnsubscribeAsync("TestProbe");
// Probe should still be in the proxy items (not removed)
proxy.Items.Values.ShouldContain("TestProbe");
client.Dispose();
}
}
}