92 lines
4.1 KiB
C#
92 lines
4.1 KiB
C#
using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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namespace ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Tests;
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/// <summary>
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/// Scaffold-level tests for <see cref="OpcUaClientDriver"/> that don't require a live
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/// remote OPC UA server. PR 67+ adds IReadable/IWritable/ITagDiscovery/ISubscribable
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/// tests against a local in-process OPC UA server fixture.
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/// </summary>
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[Trait("Category", "Unit")]
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public sealed class OpcUaClientDriverScaffoldTests
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{
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[Fact]
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public void Default_options_target_standard_opcua_port_and_anonymous_auth()
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{
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var opts = new OpcUaClientDriverOptions();
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opts.EndpointUrl.ShouldBe("opc.tcp://localhost:4840", "4840 is the IANA-assigned OPC UA port");
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opts.SecurityMode.ShouldBe(OpcUaSecurityMode.None);
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opts.SecurityPolicy.ShouldBe(OpcUaSecurityPolicy.None);
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opts.AuthType.ShouldBe(OpcUaAuthType.Anonymous);
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opts.AutoAcceptCertificates.ShouldBeFalse("production default must reject untrusted server certs");
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}
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[Fact]
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public void Default_timeouts_match_driver_specs_section_8()
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{
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var opts = new OpcUaClientDriverOptions();
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opts.SessionTimeout.ShouldBe(TimeSpan.FromSeconds(120));
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opts.KeepAliveInterval.ShouldBe(TimeSpan.FromSeconds(5));
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opts.ReconnectPeriod.ShouldBe(TimeSpan.FromSeconds(5));
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}
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[Fact]
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public void Driver_reports_type_and_id_before_connect()
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{
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using var drv = new OpcUaClientDriver(new OpcUaClientDriverOptions(), "opcua-test");
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drv.DriverType.ShouldBe("OpcUaClient");
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drv.DriverInstanceId.ShouldBe("opcua-test");
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drv.GetHealth().State.ShouldBe(DriverState.Unknown);
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}
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[Fact]
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public async Task Initialize_against_unreachable_endpoint_transitions_to_Faulted_and_throws()
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{
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// RFC 5737 reserved-for-documentation IP; won't route anywhere. Pick opc.tcp:// so
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// endpoint selection hits the transport-layer connection rather than a DNS lookup.
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var opts = new OpcUaClientDriverOptions
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{
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// Port 1 on loopback is effectively guaranteed to be closed — the OS responds
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// with TCP RST immediately instead of hanging on connect, which keeps the
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// unreachable-host tests snappy. Don't use an RFC 5737 reserved IP; those get
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// routed to a black-hole + time out only after the SDK's internal retry/backoff
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// fully elapses (~60s even with Options.Timeout=500ms).
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EndpointUrl = "opc.tcp://127.0.0.1:1",
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Timeout = TimeSpan.FromMilliseconds(500),
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AutoAcceptCertificates = true, // dev-mode to bypass cert validation in the test
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};
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using var drv = new OpcUaClientDriver(opts, "opcua-unreach");
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await Should.ThrowAsync<Exception>(async () =>
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await drv.InitializeAsync("{}", TestContext.Current.CancellationToken));
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var health = drv.GetHealth();
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health.State.ShouldBe(DriverState.Faulted);
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health.LastError.ShouldNotBeNull();
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}
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[Fact]
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public async Task Reinitialize_against_unreachable_endpoint_re_throws()
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{
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var opts = new OpcUaClientDriverOptions
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{
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// Port 1 on loopback is effectively guaranteed to be closed — the OS responds
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// with TCP RST immediately instead of hanging on connect, which keeps the
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// unreachable-host tests snappy. Don't use an RFC 5737 reserved IP; those get
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// routed to a black-hole + time out only after the SDK's internal retry/backoff
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// fully elapses (~60s even with Options.Timeout=500ms).
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EndpointUrl = "opc.tcp://127.0.0.1:1",
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Timeout = TimeSpan.FromMilliseconds(500),
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AutoAcceptCertificates = true,
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};
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using var drv = new OpcUaClientDriver(opts, "opcua-reinit");
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await Should.ThrowAsync<Exception>(async () =>
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await drv.InitializeAsync("{}", TestContext.Current.CancellationToken));
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await Should.ThrowAsync<Exception>(async () =>
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await drv.ReinitializeAsync("{}", TestContext.Current.CancellationToken));
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}
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}
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