test(opcuaclient.browser): opc-plc integration round-trip

2026-05-28 16:13:43 -04:00
parent 6e365ef1a9
commit f31af0093f
3 changed files with 81 additions and 0 deletions
@@ -0,0 +1,53 @@
+using Shouldly;
+using Xunit;
+using ZB.MOM.WW.OtOpcUa.Commons.Browsing;
+using ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Browser;
+
+namespace ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Browser.IntegrationTests;
+
+/// <summary>
+///     End-to-end test against opc-plc Docker fixture. Validates that NodeId strings returned
+///     by RootAsync/ExpandAsync round-trip cleanly through ExpandAsync — the regression test
+///     for namespace-stable address encoding.
+/// </summary>
+[Trait("Category", "Integration"), Trait("Fixture", "opc-plc")]
+public class BrowseRoundTripTests
+{
+    [Fact]
+    public async Task Three_level_expand_round_trips_resolve_back()
+    {
+        var endpoint = Environment.GetEnvironmentVariable("OPCUA_SIM_ENDPOINT")
+                       ?? "opc.tcp://10.100.0.35:50000";
+        // Numeric ordinals because the production browser uses default System.Text.Json
+        // without a JsonStringEnumConverter (SecurityPolicy.None=0, SecurityMode.None=0,
+        // AuthType.Anonymous=0).
+        var json = $$"""
+            {
+                "EndpointUrl":"{{endpoint}}",
+                "SecurityPolicy":0,"SecurityMode":0,"AuthType":0,
+                "SessionTimeout":"00:01:00","Timeout":"00:00:10","PerEndpointConnectTimeout":"00:00:10"
+            }
+            """;
+
+        var browser = new OpcUaClientDriverBrowser();
+        await using var session = await browser.OpenAsync(json, TestContext.Current.CancellationToken);
+
+        var roots = await session.RootAsync(TestContext.Current.CancellationToken);
+        var current = roots.FirstOrDefault(n => n.HasChildrenHint);
+        current.ShouldNotBeNull("expected at least one Folder under ObjectsFolder on opc-plc");
+
+        // Drill down up to 2 more levels by alternately expanding the first Folder
+        for (var depth = 0; depth < 2; depth++)
+        {
+            var next = await session.ExpandAsync(current!.NodeId, TestContext.Current.CancellationToken);
+            var step = next.FirstOrDefault(n => n.HasChildrenHint);
+            if (step is null) break;
+            current = step;
+        }
+
+        // Round-trip the leaf-most reachable folder string — must resolve back through the
+        // namespace map, prove the nsu= encoding survives.
+        var children = await session.ExpandAsync(current!.NodeId, TestContext.Current.CancellationToken);
+        children.ShouldNotBeNull();
+    }
+}