Files
lmxopcua/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Tests/OpcUaClientFailoverTests.cs
Joseph Doherty a25593a9c6 chore: organize solution into module folders (Core/Server/Drivers/Client/Tooling)
Group all 69 projects into category subfolders under src/ and tests/ so the
Rider Solution Explorer mirrors the module structure. Folders: Core, Server,
Drivers (with a nested Driver CLIs subfolder), Client, Tooling.

- Move every project folder on disk with git mv (history preserved as renames).
- Recompute relative paths in 57 .csproj files: cross-category ProjectReferences,
  the lib/ HintPath+None refs in Driver.Historian.Wonderware, and the external
  mxaccessgw refs in Driver.Galaxy and its test project.
- Rebuild ZB.MOM.WW.OtOpcUa.slnx with nested solution folders.
- Re-prefix project paths in functional scripts (e2e, compliance, smoke SQL,
  integration, install).

Build green (0 errors); unit tests pass. Docs left for a separate pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-17 01:55:28 -04:00

82 lines
3.2 KiB
C#

using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
namespace ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Tests;
[Trait("Category", "Unit")]
public sealed class OpcUaClientFailoverTests
{
[Fact]
public void ResolveEndpointCandidates_prefers_EndpointUrls_when_provided()
{
var opts = new OpcUaClientDriverOptions
{
EndpointUrl = "opc.tcp://fallback:4840",
EndpointUrls = ["opc.tcp://primary:4840", "opc.tcp://backup:4841"],
};
var list = OpcUaClientDriver.ResolveEndpointCandidates(opts);
list.Count.ShouldBe(2);
list[0].ShouldBe("opc.tcp://primary:4840");
list[1].ShouldBe("opc.tcp://backup:4841");
}
[Fact]
public void ResolveEndpointCandidates_falls_back_to_single_EndpointUrl_when_list_empty()
{
var opts = new OpcUaClientDriverOptions { EndpointUrl = "opc.tcp://only:4840" };
var list = OpcUaClientDriver.ResolveEndpointCandidates(opts);
list.Count.ShouldBe(1);
list[0].ShouldBe("opc.tcp://only:4840");
}
[Fact]
public void ResolveEndpointCandidates_empty_list_treated_as_fallback_to_EndpointUrl()
{
// Explicit empty list should still fall back to the single-URL shortcut rather than
// producing a zero-candidate sweep that would immediately throw with no URLs tried.
var opts = new OpcUaClientDriverOptions
{
EndpointUrl = "opc.tcp://single:4840",
EndpointUrls = [],
};
OpcUaClientDriver.ResolveEndpointCandidates(opts).Count.ShouldBe(1);
}
[Fact]
public void HostName_uses_first_candidate_before_connect()
{
var opts = new OpcUaClientDriverOptions
{
EndpointUrls = ["opc.tcp://primary:4840", "opc.tcp://backup:4841"],
};
using var drv = new OpcUaClientDriver(opts, "opcua-host");
drv.HostName.ShouldBe("opc.tcp://primary:4840",
"pre-connect the dashboard should show the first candidate URL so operators can link back");
}
[Fact]
public async Task Initialize_against_all_unreachable_endpoints_throws_AggregateException_listing_each()
{
// Port 1 + port 2 + port 3 on loopback are all guaranteed closed (TCP RST immediate).
// Failover sweep should attempt all three and throw AggregateException naming each URL
// so operators see exactly which candidates were tried.
var opts = new OpcUaClientDriverOptions
{
EndpointUrls = ["opc.tcp://127.0.0.1:1", "opc.tcp://127.0.0.1:2", "opc.tcp://127.0.0.1:3"],
PerEndpointConnectTimeout = TimeSpan.FromMilliseconds(500),
Timeout = TimeSpan.FromMilliseconds(500),
AutoAcceptCertificates = true,
};
using var drv = new OpcUaClientDriver(opts, "opcua-failover");
var ex = await Should.ThrowAsync<AggregateException>(async () =>
await drv.InitializeAsync("{}", TestContext.Current.CancellationToken));
ex.Message.ShouldContain("127.0.0.1:1");
ex.Message.ShouldContain("127.0.0.1:2");
ex.Message.ShouldContain("127.0.0.1:3");
drv.GetHealth().State.ShouldBe(DriverState.Faulted);
}
}