Joseph Doherty
42 lines
1.8 KiB
C#
42 lines
1.8 KiB
C#
using Microsoft.Extensions.Logging.Abstractions;
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using NSubstitute;
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using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Protocol;
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using ZB.MOM.WW.ScadaBridge.DataConnectionLayer.Adapters;
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namespace ZB.MOM.WW.ScadaBridge.DataConnectionLayer.Tests.Adapters;
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/// <summary>
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/// Task 9 (opcua-tag-browser): <see cref="OpcUaDataConnection"/> implements
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/// <see cref="IBrowsableDataConnection"/> as a one-line forwarder onto the
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/// underlying <see cref="IOpcUaClient"/>. This guards that wiring — the
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/// adapter must not add its own browse semantics; all browse behaviour lives
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/// in the client (and is covered by RealOpcUaClient's own tests).
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/// </summary>
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public class OpcUaDataConnectionBrowseTests
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{
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[Fact]
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public async Task BrowseChildrenAsync_ForwardsToUnderlyingClient()
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{
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var client = Substitute.For<IOpcUaClient>();
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var factory = Substitute.For<IOpcUaClientFactory>();
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factory.Create().Returns(client);
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client.IsConnected.Returns(true);
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var expected = new BrowseChildrenResult(
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new[] { new BrowseNode("ns=2;s=X", "X", BrowseNodeClass.Variable, false) },
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Truncated: false);
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client.BrowseChildrenAsync("ns=2;s=Parent", Arg.Any<CancellationToken>())
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.Returns(expected);
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var adapter = new OpcUaDataConnection(factory, NullLogger<OpcUaDataConnection>.Instance);
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// ConnectAsync installs the IOpcUaClient instance on the adapter; the
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// forwarder dereferences that field directly.
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await adapter.ConnectAsync(new Dictionary<string, string>());
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var actual = await adapter.BrowseChildrenAsync("ns=2;s=Parent");
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Assert.Same(expected, actual);
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await client.Received(1).BrowseChildrenAsync("ns=2;s=Parent", Arg.Any<CancellationToken>());
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}
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}
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