Joseph Doherty
34 lines
1.4 KiB
C#
34 lines
1.4 KiB
C#
using Shouldly;
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using Xunit;
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namespace ZB.MOM.WW.OtOpcUa.Driver.Historian.QuestDb.Tests;
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public sealed class QuestDbWalVisibilityTests
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{
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[Fact]
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public async Task Timeout_zero_skips_the_wait_without_touching_the_database()
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{
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// Port 1 refuses connections: any attempt to query would throw, so returning true proves nothing was opened.
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var conn = new QuestDbConnection(new QuestDbHistorianOptions { ConnectionString = "Host=127.0.0.1;Port=1;Timeout=1" });
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var wal = new QuestDbWalVisibility(conn, TimeSpan.Zero);
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wal.Disabled.ShouldBeTrue();
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(await wal.WaitAsync("hist_sample", CancellationToken.None)).ShouldBeTrue();
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}
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[Fact]
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public async Task A_positive_timeout_does_touch_the_database_control()
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{
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var conn = new QuestDbConnection(new QuestDbHistorianOptions { ConnectionString = "Host=127.0.0.1;Port=1;Timeout=1" });
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var wal = new QuestDbWalVisibility(conn, TimeSpan.FromSeconds(1));
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wal.Disabled.ShouldBeFalse();
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await Should.ThrowAsync<Exception>(() => wal.WaitAsync("hist_sample", CancellationToken.None));
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}
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[Theory]
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[InlineData(5, 5, true)]
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[InlineData(6, 5, true)]
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[InlineData(4, 5, false)]
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public void Reached_is_writerTxn_at_or_beyond_the_target(long writer, long target, bool expected) =>
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QuestDbWalVisibility.Reached(writer, target).ShouldBe(expected);
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}
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