Joseph Doherty
57 lines
2.0 KiB
C#
57 lines
2.0 KiB
C#
using Opc.Ua;
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namespace ZB.MOM.WW.ScadaBridge.DataConnectionLayer.Tests.Adapters;
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/// <summary>
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/// MV-8: the OPC UA WRITE path (<see cref="RealOpcUaClient.WriteValueAsync"/>)
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/// wraps the outgoing value in <c>new Variant(value)</c> and lets the OPC
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/// Foundation SDK serialize it. For a structured multi-value (List) attribute
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/// the value handed down is a CLR array. These tests assert that the load-bearing
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/// step — wrapping an array in a <see cref="Variant"/> — succeeds without
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/// throwing, which is what the write path relies on (no separate array handling
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/// is required in our code). A full device round-trip needs a live server and is
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/// covered by the live OPC UA browse/read smoke tests.
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/// </summary>
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[Trait("Category", "Unit")]
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public class RealOpcUaClientArrayWriteTests
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{
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[Fact]
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public void Variant_wraps_int_array_without_throwing()
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{
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var value = new[] { 10, 20, 30 };
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var ex = Record.Exception(() => new Variant(value));
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Assert.Null(ex);
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var variant = new Variant(value);
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Assert.Equal(BuiltInType.Int32, variant.TypeInfo.BuiltInType);
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Assert.Equal(ValueRanks.OneDimension, variant.TypeInfo.ValueRank);
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}
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[Fact]
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public void Variant_wraps_double_array_without_throwing()
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{
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var value = new[] { 1.5, 2.5, 3.5 };
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var ex = Record.Exception(() => new Variant(value));
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Assert.Null(ex);
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var variant = new Variant(value);
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Assert.Equal(BuiltInType.Double, variant.TypeInfo.BuiltInType);
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Assert.Equal(ValueRanks.OneDimension, variant.TypeInfo.ValueRank);
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}
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[Fact]
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public void Variant_wraps_string_array_without_throwing()
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{
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var value = new[] { "a", "b", "c" };
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var ex = Record.Exception(() => new Variant(value));
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Assert.Null(ex);
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var variant = new Variant(value);
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Assert.Equal(BuiltInType.String, variant.TypeInfo.BuiltInType);
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Assert.Equal(ValueRanks.OneDimension, variant.TypeInfo.ValueRank);
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}
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}
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