Joseph Doherty
92 lines
3.3 KiB
C#
92 lines
3.3 KiB
C#
using Microsoft.Extensions.DependencyInjection;
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using NSubstitute;
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using ZB.MOM.WW.ScadaBridge.AuditLog.Central;
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using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Repositories;
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using SiteEntity = ZB.MOM.WW.ScadaBridge.Commons.Entities.Sites.Site;
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namespace ZB.MOM.WW.ScadaBridge.AuditLog.Tests.Central;
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/// <summary>
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/// Unit tests for the production <see cref="SiteEnumerator"/> — the central
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/// reconciliation-singleton collaborator that projects the config-DB
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/// <see cref="SiteEntity"/> rows into the <see cref="SiteEntry"/> targets the
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/// <see cref="SiteAuditReconciliationActor"/> polls.
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/// </summary>
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/// <remarks>
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/// The enumerator opens a fresh DI scope per <see cref="SiteEnumerator.EnumerateAsync"/>
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/// call (mirroring the per-tick scope pattern in the reconciliation actor)
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/// because <see cref="ISiteRepository"/> is a SCOPED EF Core service. The tests
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/// register a substituted repository as a scoped service so the enumerator's
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/// <c>CreateAsyncScope</c> resolves it and the projection / blank-address
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/// filtering can be exercised without an MSSQL container.
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/// </remarks>
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public class SiteEnumeratorTests
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{
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private static SiteEntity SiteWith(string identifier, string? grpcNodeA, string? grpcNodeB = null)
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{
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var site = new SiteEntity($"Display {identifier}", identifier)
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{
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GrpcNodeAAddress = grpcNodeA,
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GrpcNodeBAddress = grpcNodeB,
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};
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return site;
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}
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private static IServiceProvider BuildProvider(ISiteRepository repository)
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{
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var services = new ServiceCollection();
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// Scoped to match the production lifetime (EF Core); the enumerator
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// must open a scope to resolve it.
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services.AddScoped(_ => repository);
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return services.BuildServiceProvider();
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}
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[Fact]
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public async Task EnumerateAsync_ProjectsSitesWithNodeAAddress_AndSkipsBlankOnes()
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{
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var repository = Substitute.For<ISiteRepository>();
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repository.GetAllSitesAsync(Arg.Any<CancellationToken>()).Returns(new List<SiteEntity>
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{
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SiteWith("site-a", "http://site-a:8083"),
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SiteWith("site-b", grpcNodeA: " "), // blank NodeA -> skipped
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});
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var enumerator = new SiteEnumerator(BuildProvider(repository));
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var result = await enumerator.EnumerateAsync();
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var entry = Assert.Single(result);
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Assert.Equal("site-a", entry.SiteId);
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Assert.Equal("http://site-a:8083", entry.GrpcEndpoint);
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}
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[Fact]
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public async Task EnumerateAsync_SkipsNullNodeAAddress()
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{
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var repository = Substitute.For<ISiteRepository>();
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repository.GetAllSitesAsync(Arg.Any<CancellationToken>()).Returns(new List<SiteEntity>
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{
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SiteWith("site-null", grpcNodeA: null),
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});
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var enumerator = new SiteEnumerator(BuildProvider(repository));
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var result = await enumerator.EnumerateAsync();
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Assert.Empty(result);
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}
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[Fact]
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public async Task EnumerateAsync_ReturnsEmpty_WhenNoSites()
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{
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var repository = Substitute.For<ISiteRepository>();
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repository.GetAllSitesAsync(Arg.Any<CancellationToken>()).Returns(new List<SiteEntity>());
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var enumerator = new SiteEnumerator(BuildProvider(repository));
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var result = await enumerator.EnumerateAsync();
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Assert.Empty(result);
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}
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}
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