Phase 3B: Site I/O & Observability — Communication, DCL, Script/Alarm actors, Health, Event Logging
Communication Layer (WP-1–5): - 8 message patterns with correlation IDs, per-pattern timeouts - Central/Site communication actors, transport heartbeat config - Connection failure handling (no central buffering, debug streams killed) Data Connection Layer (WP-6–14, WP-34): - Connection actor with Become/Stash lifecycle (Connecting/Connected/Reconnecting) - OPC UA + LmxProxy adapters behind IDataConnection - Auto-reconnect, bad quality propagation, transparent re-subscribe - Write-back, tag path resolution with retry, health reporting - Protocol extensibility via DataConnectionFactory Site Runtime (WP-15–25, WP-32–33): - ScriptActor/ScriptExecutionActor (triggers, concurrent execution, blocking I/O dispatcher) - AlarmActor/AlarmExecutionActor (ValueMatch/RangeViolation/RateOfChange, in-memory state) - SharedScriptLibrary (inline execution), ScriptRuntimeContext (API) - ScriptCompilationService (Roslyn, forbidden API enforcement, execution timeout) - Recursion limit (default 10), call direction enforcement - SiteStreamManager (per-subscriber bounded buffers, fire-and-forget) - Debug view backend (snapshot + stream), concurrency serialization - Local artifact storage (4 SQLite tables) Health Monitoring (WP-26–28): - SiteHealthCollector (thread-safe counters, connection state) - HealthReportSender (30s interval, monotonic sequence numbers) - CentralHealthAggregator (offline detection 60s, online recovery) Site Event Logging (WP-29–31): - SiteEventLogger (SQLite, 6 event categories, ISO 8601 UTC) - EventLogPurgeService (30-day retention, 1GB cap) - EventLogQueryService (filters, keyword search, keyset pagination) 541 tests pass, zero warnings.
This commit is contained in:
Joseph Doherty
@@ -0,0 +1,119 @@
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using Microsoft.Extensions.Logging.Abstractions;
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using Microsoft.Extensions.Options;
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namespace ScadaLink.SiteEventLogging.Tests;
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public class EventLogPurgeServiceTests : IDisposable
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{
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private readonly SiteEventLogger _eventLogger;
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private readonly string _dbPath;
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private readonly SiteEventLogOptions _options;
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public EventLogPurgeServiceTests()
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{
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_dbPath = Path.Combine(Path.GetTempPath(), $"test_purge_{Guid.NewGuid()}.db");
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_options = new SiteEventLogOptions
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{
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DatabasePath = _dbPath,
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RetentionDays = 30,
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MaxStorageMb = 1024
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};
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_eventLogger = new SiteEventLogger(
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Options.Create(_options),
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NullLogger<SiteEventLogger>.Instance);
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}
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public void Dispose()
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{
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_eventLogger.Dispose();
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if (File.Exists(_dbPath)) File.Delete(_dbPath);
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}
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private EventLogPurgeService CreatePurgeService(SiteEventLogOptions? optionsOverride = null)
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{
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var opts = optionsOverride ?? _options;
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return new EventLogPurgeService(
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_eventLogger,
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Options.Create(opts),
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NullLogger<EventLogPurgeService>.Instance);
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}
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private void InsertEventWithTimestamp(DateTimeOffset timestamp)
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{
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using var cmd = _eventLogger.Connection.CreateCommand();
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cmd.CommandText = """
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INSERT INTO site_events (timestamp, event_type, severity, source, message)
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VALUES ($ts, 'script', 'Info', 'Test', 'Test message')
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""";
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cmd.Parameters.AddWithValue("$ts", timestamp.ToString("o"));
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cmd.ExecuteNonQuery();
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}
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private long GetEventCount()
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{
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using var cmd = _eventLogger.Connection.CreateCommand();
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cmd.CommandText = "SELECT COUNT(*) FROM site_events";
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return (long)cmd.ExecuteScalar()!;
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}
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[Fact]
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public void PurgeByRetention_DeletesOldEvents()
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{
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// Insert an old event (31 days ago) and a recent one
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InsertEventWithTimestamp(DateTimeOffset.UtcNow.AddDays(-31));
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InsertEventWithTimestamp(DateTimeOffset.UtcNow);
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var purge = CreatePurgeService();
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purge.RunPurge();
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Assert.Equal(1, GetEventCount());
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}
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[Fact]
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public void PurgeByRetention_KeepsRecentEvents()
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{
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InsertEventWithTimestamp(DateTimeOffset.UtcNow.AddDays(-29));
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InsertEventWithTimestamp(DateTimeOffset.UtcNow.AddDays(-1));
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InsertEventWithTimestamp(DateTimeOffset.UtcNow);
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var purge = CreatePurgeService();
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purge.RunPurge();
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Assert.Equal(3, GetEventCount());
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}
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[Fact]
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public void PurgeByStorageCap_DeletesOldestWhenOverCap()
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{
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// Insert enough events to have some data
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for (int i = 0; i < 100; i++)
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{
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InsertEventWithTimestamp(DateTimeOffset.UtcNow);
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}
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// Set an artificially small cap to trigger purge
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var smallCapOptions = new SiteEventLogOptions
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{
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DatabasePath = _dbPath,
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RetentionDays = 30,
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MaxStorageMb = 0 // 0 MB cap forces purge
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};
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var purge = CreatePurgeService(smallCapOptions);
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purge.RunPurge();
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// All events should be purged since cap is 0
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Assert.Equal(0, GetEventCount());
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}
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[Fact]
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public void GetDatabaseSizeBytes_ReturnsPositiveValue()
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{
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InsertEventWithTimestamp(DateTimeOffset.UtcNow);
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var purge = CreatePurgeService();
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var size = purge.GetDatabaseSizeBytes();
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Assert.True(size > 0);
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}
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}
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@@ -0,0 +1,272 @@
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using Microsoft.Extensions.Logging.Abstractions;
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using Microsoft.Extensions.Options;
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using ScadaLink.Commons.Messages.RemoteQuery;
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namespace ScadaLink.SiteEventLogging.Tests;
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public class EventLogQueryServiceTests : IDisposable
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{
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private readonly SiteEventLogger _eventLogger;
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private readonly EventLogQueryService _queryService;
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private readonly string _dbPath;
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public EventLogQueryServiceTests()
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{
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_dbPath = Path.Combine(Path.GetTempPath(), $"test_query_{Guid.NewGuid()}.db");
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var options = Options.Create(new SiteEventLogOptions
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{
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DatabasePath = _dbPath,
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QueryPageSize = 500
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});
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_eventLogger = new SiteEventLogger(options, NullLogger<SiteEventLogger>.Instance);
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_queryService = new EventLogQueryService(
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_eventLogger,
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options,
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NullLogger<EventLogQueryService>.Instance);
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}
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public void Dispose()
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{
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_eventLogger.Dispose();
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if (File.Exists(_dbPath)) File.Delete(_dbPath);
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}
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private async Task SeedEvents()
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{
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await _eventLogger.LogEventAsync("script", "Error", "inst-1", "ScriptActor:Monitor", "Script timeout");
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await _eventLogger.LogEventAsync("alarm", "Warning", "inst-1", "AlarmActor:TempHigh", "Alarm triggered");
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await _eventLogger.LogEventAsync("deployment", "Info", "inst-2", "DeploymentManager", "Instance deployed");
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await _eventLogger.LogEventAsync("connection", "Error", null, "DCL:OPC1", "Connection lost");
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await _eventLogger.LogEventAsync("script", "Info", "inst-2", "ScriptActor:Calculate", "Script completed");
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}
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private EventLogQueryRequest MakeRequest(
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string? eventType = null,
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string? severity = null,
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string? instanceId = null,
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string? keyword = null,
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long? continuationToken = null,
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int pageSize = 500,
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DateTimeOffset? from = null,
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DateTimeOffset? to = null) =>
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new(
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CorrelationId: Guid.NewGuid().ToString(),
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SiteId: "site-1",
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From: from,
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To: to,
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EventType: eventType,
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Severity: severity,
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InstanceId: instanceId,
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KeywordFilter: keyword,
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ContinuationToken: continuationToken,
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PageSize: pageSize,
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Timestamp: DateTimeOffset.UtcNow);
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[Fact]
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public async Task Query_ReturnsAllEvents_WhenNoFilters()
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{
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await SeedEvents();
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var response = _queryService.ExecuteQuery(MakeRequest());
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Assert.True(response.Success);
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Assert.Equal(5, response.Entries.Count);
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Assert.False(response.HasMore);
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}
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[Fact]
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public async Task Query_FiltersByEventType()
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{
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await SeedEvents();
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var response = _queryService.ExecuteQuery(MakeRequest(eventType: "script"));
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Assert.True(response.Success);
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Assert.Equal(2, response.Entries.Count);
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Assert.All(response.Entries, e => Assert.Equal("script", e.EventType));
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}
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[Fact]
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public async Task Query_FiltersBySeverity()
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{
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await SeedEvents();
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var response = _queryService.ExecuteQuery(MakeRequest(severity: "Error"));
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Assert.True(response.Success);
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Assert.Equal(2, response.Entries.Count);
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Assert.All(response.Entries, e => Assert.Equal("Error", e.Severity));
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}
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[Fact]
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public async Task Query_FiltersByInstanceId()
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{
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await SeedEvents();
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var response = _queryService.ExecuteQuery(MakeRequest(instanceId: "inst-1"));
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Assert.True(response.Success);
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Assert.Equal(2, response.Entries.Count);
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Assert.All(response.Entries, e => Assert.Equal("inst-1", e.InstanceId));
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}
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[Fact]
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public async Task Query_KeywordSearch_MatchesMessage()
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{
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await SeedEvents();
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var response = _queryService.ExecuteQuery(MakeRequest(keyword: "timeout"));
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Assert.True(response.Success);
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Assert.Single(response.Entries);
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Assert.Contains("timeout", response.Entries[0].Message, StringComparison.OrdinalIgnoreCase);
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}
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[Fact]
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public async Task Query_KeywordSearch_MatchesSource()
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{
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await SeedEvents();
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var response = _queryService.ExecuteQuery(MakeRequest(keyword: "AlarmActor"));
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Assert.True(response.Success);
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Assert.Single(response.Entries);
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Assert.Contains("AlarmActor", response.Entries[0].Source);
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}
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[Fact]
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public async Task Query_CombinesMultipleFilters()
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{
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await SeedEvents();
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var response = _queryService.ExecuteQuery(MakeRequest(
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eventType: "script",
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severity: "Error",
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instanceId: "inst-1"));
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Assert.True(response.Success);
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Assert.Single(response.Entries);
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Assert.Equal("Script timeout", response.Entries[0].Message);
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}
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[Fact]
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public async Task Query_Pagination_ReturnsCorrectPageSize()
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{
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await SeedEvents();
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var response = _queryService.ExecuteQuery(MakeRequest(pageSize: 2));
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Assert.True(response.Success);
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Assert.Equal(2, response.Entries.Count);
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Assert.True(response.HasMore);
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Assert.NotNull(response.ContinuationToken);
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}
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[Fact]
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public async Task Query_Pagination_ContinuationTokenWorksCorrectly()
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{
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await SeedEvents();
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// Get first page
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var page1 = _queryService.ExecuteQuery(MakeRequest(pageSize: 2));
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Assert.Equal(2, page1.Entries.Count);
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Assert.True(page1.HasMore);
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// Get second page using continuation token
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var page2 = _queryService.ExecuteQuery(MakeRequest(
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pageSize: 2,
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continuationToken: page1.ContinuationToken));
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Assert.Equal(2, page2.Entries.Count);
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Assert.True(page2.HasMore);
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// Get third page
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var page3 = _queryService.ExecuteQuery(MakeRequest(
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pageSize: 2,
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continuationToken: page2.ContinuationToken));
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Assert.Single(page3.Entries);
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Assert.False(page3.HasMore);
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// Verify no overlapping entries
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var allIds = page1.Entries.Select(e => e.Id)
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.Concat(page2.Entries.Select(e => e.Id))
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.Concat(page3.Entries.Select(e => e.Id))
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.ToList();
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Assert.Equal(5, allIds.Distinct().Count());
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}
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[Fact]
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public async Task Query_FiltersByTimeRange()
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{
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// Insert events at controlled times
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var now = DateTimeOffset.UtcNow;
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// Insert with a direct SQL to control timestamps
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InsertEventAt(now.AddHours(-2), "script", "Info", null, "S1", "Old event");
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InsertEventAt(now.AddMinutes(-30), "script", "Info", null, "S2", "Recent event");
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InsertEventAt(now, "script", "Info", null, "S3", "Now event");
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var response = _queryService.ExecuteQuery(MakeRequest(
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from: now.AddHours(-1),
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to: now.AddMinutes(1)));
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Assert.True(response.Success);
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Assert.Equal(2, response.Entries.Count);
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}
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[Fact]
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public async Task Query_EmptyResult_WhenNoMatches()
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{
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await SeedEvents();
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var response = _queryService.ExecuteQuery(MakeRequest(eventType: "nonexistent"));
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Assert.True(response.Success);
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Assert.Empty(response.Entries);
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Assert.False(response.HasMore);
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Assert.Null(response.ContinuationToken);
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}
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[Fact]
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public void Query_ReturnsCorrelationId()
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{
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var request = MakeRequest();
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var response = _queryService.ExecuteQuery(request);
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Assert.Equal(request.CorrelationId, response.CorrelationId);
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Assert.Equal("site-1", response.SiteId);
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}
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[Fact]
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public async Task Query_ReturnsAllEventLogEntryFields()
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{
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await _eventLogger.LogEventAsync("script", "Error", "inst-1", "ScriptActor:Run", "Failure", "{\"stack\":\"trace\"}");
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var response = _queryService.ExecuteQuery(MakeRequest());
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Assert.Single(response.Entries);
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var entry = response.Entries[0];
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Assert.True(entry.Id > 0);
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Assert.Equal("script", entry.EventType);
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Assert.Equal("Error", entry.Severity);
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Assert.Equal("inst-1", entry.InstanceId);
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Assert.Equal("ScriptActor:Run", entry.Source);
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Assert.Equal("Failure", entry.Message);
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Assert.Equal("{\"stack\":\"trace\"}", entry.Details);
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}
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private void InsertEventAt(DateTimeOffset timestamp, string eventType, string severity, string? instanceId, string source, string message)
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{
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using var cmd = _eventLogger.Connection.CreateCommand();
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cmd.CommandText = """
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INSERT INTO site_events (timestamp, event_type, severity, instance_id, source, message)
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VALUES ($ts, $et, $sev, $iid, $src, $msg)
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""";
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cmd.Parameters.AddWithValue("$ts", timestamp.ToString("o"));
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cmd.Parameters.AddWithValue("$et", eventType);
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cmd.Parameters.AddWithValue("$sev", severity);
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cmd.Parameters.AddWithValue("$iid", (object?)instanceId ?? DBNull.Value);
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cmd.Parameters.AddWithValue("$src", source);
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cmd.Parameters.AddWithValue("$msg", message);
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cmd.ExecuteNonQuery();
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}
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}
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@@ -1,4 +1,4 @@
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<Project Sdk="Microsoft.NET.Sdk">
|
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<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
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<PropertyGroup>
|
||||
<TargetFramework>net10.0</TargetFramework>
|
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@@ -10,6 +10,9 @@
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<ItemGroup>
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<PackageReference Include="coverlet.collector" Version="6.0.4" />
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<PackageReference Include="Microsoft.Data.Sqlite" Version="10.0.5" />
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<PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.5" />
|
||||
<PackageReference Include="Microsoft.Extensions.Options" Version="10.0.5" />
|
||||
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
|
||||
<PackageReference Include="xunit" Version="2.9.3" />
|
||||
<PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
|
||||
@@ -23,4 +26,4 @@
|
||||
<ProjectReference Include="../../src/ScadaLink.SiteEventLogging/ScadaLink.SiteEventLogging.csproj" />
|
||||
</ItemGroup>
|
||||
|
||||
</Project>
|
||||
</Project>
|
||||
|
||||
143
tests/ScadaLink.SiteEventLogging.Tests/SiteEventLoggerTests.cs
Normal file
143
tests/ScadaLink.SiteEventLogging.Tests/SiteEventLoggerTests.cs
Normal file
@@ -0,0 +1,143 @@
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using Microsoft.Data.Sqlite;
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using Microsoft.Extensions.Logging.Abstractions;
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using Microsoft.Extensions.Options;
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|
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namespace ScadaLink.SiteEventLogging.Tests;
|
||||
|
||||
public class SiteEventLoggerTests : IDisposable
|
||||
{
|
||||
private readonly SiteEventLogger _logger;
|
||||
private readonly SqliteConnection _verifyConnection;
|
||||
private readonly string _dbPath;
|
||||
|
||||
public SiteEventLoggerTests()
|
||||
{
|
||||
_dbPath = Path.Combine(Path.GetTempPath(), $"test_events_{Guid.NewGuid()}.db");
|
||||
var options = Options.Create(new SiteEventLogOptions { DatabasePath = _dbPath });
|
||||
_logger = new SiteEventLogger(options, NullLogger<SiteEventLogger>.Instance);
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||||
|
||||
// Separate connection for verification queries
|
||||
_verifyConnection = new SqliteConnection($"Data Source={_dbPath}");
|
||||
_verifyConnection.Open();
|
||||
}
|
||||
|
||||
public void Dispose()
|
||||
{
|
||||
_verifyConnection.Dispose();
|
||||
_logger.Dispose();
|
||||
if (File.Exists(_dbPath)) File.Delete(_dbPath);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task LogEventAsync_InsertsRecord()
|
||||
{
|
||||
await _logger.LogEventAsync("script", "Error", "inst-1", "ScriptActor:Monitor", "Script failed", "{\"stack\":\"...\"}");
|
||||
|
||||
using var cmd = _verifyConnection.CreateCommand();
|
||||
cmd.CommandText = "SELECT COUNT(*) FROM site_events";
|
||||
var count = (long)cmd.ExecuteScalar()!;
|
||||
Assert.Equal(1, count);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task LogEventAsync_StoresAllFields()
|
||||
{
|
||||
await _logger.LogEventAsync("alarm", "Warning", "inst-2", "AlarmActor:TempHigh", "Alarm triggered", "{\"value\":95}");
|
||||
|
||||
using var cmd = _verifyConnection.CreateCommand();
|
||||
cmd.CommandText = "SELECT event_type, severity, instance_id, source, message, details FROM site_events LIMIT 1";
|
||||
using var reader = cmd.ExecuteReader();
|
||||
Assert.True(reader.Read());
|
||||
Assert.Equal("alarm", reader.GetString(0));
|
||||
Assert.Equal("Warning", reader.GetString(1));
|
||||
Assert.Equal("inst-2", reader.GetString(2));
|
||||
Assert.Equal("AlarmActor:TempHigh", reader.GetString(3));
|
||||
Assert.Equal("Alarm triggered", reader.GetString(4));
|
||||
Assert.Equal("{\"value\":95}", reader.GetString(5));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task LogEventAsync_NullableFieldsAllowed()
|
||||
{
|
||||
await _logger.LogEventAsync("deployment", "Info", null, "DeploymentManager", "Deployed instance");
|
||||
|
||||
using var cmd = _verifyConnection.CreateCommand();
|
||||
cmd.CommandText = "SELECT instance_id, details FROM site_events LIMIT 1";
|
||||
using var reader = cmd.ExecuteReader();
|
||||
Assert.True(reader.Read());
|
||||
Assert.True(reader.IsDBNull(0));
|
||||
Assert.True(reader.IsDBNull(1));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task LogEventAsync_StoresIso8601UtcTimestamp()
|
||||
{
|
||||
await _logger.LogEventAsync("connection", "Info", null, "DCL", "Connected");
|
||||
|
||||
using var cmd = _verifyConnection.CreateCommand();
|
||||
cmd.CommandText = "SELECT timestamp FROM site_events LIMIT 1";
|
||||
var ts = (string)cmd.ExecuteScalar()!;
|
||||
var parsed = DateTimeOffset.Parse(ts);
|
||||
Assert.Equal(TimeSpan.Zero, parsed.Offset);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task LogEventAsync_ThrowsOnEmptyEventType()
|
||||
{
|
||||
await Assert.ThrowsAsync<ArgumentException>(() =>
|
||||
_logger.LogEventAsync("", "Info", null, "Source", "Message"));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task LogEventAsync_ThrowsOnEmptySeverity()
|
||||
{
|
||||
await Assert.ThrowsAsync<ArgumentException>(() =>
|
||||
_logger.LogEventAsync("script", "", null, "Source", "Message"));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task LogEventAsync_ThrowsOnEmptySource()
|
||||
{
|
||||
await Assert.ThrowsAsync<ArgumentException>(() =>
|
||||
_logger.LogEventAsync("script", "Info", null, "", "Message"));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task LogEventAsync_ThrowsOnEmptyMessage()
|
||||
{
|
||||
await Assert.ThrowsAsync<ArgumentException>(() =>
|
||||
_logger.LogEventAsync("script", "Info", null, "Source", ""));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task LogEventAsync_MultipleEvents_AutoIncrementIds()
|
||||
{
|
||||
await _logger.LogEventAsync("script", "Info", null, "S1", "First");
|
||||
await _logger.LogEventAsync("script", "Info", null, "S2", "Second");
|
||||
await _logger.LogEventAsync("script", "Info", null, "S3", "Third");
|
||||
|
||||
using var cmd = _verifyConnection.CreateCommand();
|
||||
cmd.CommandText = "SELECT id FROM site_events ORDER BY id";
|
||||
using var reader = cmd.ExecuteReader();
|
||||
var ids = new List<long>();
|
||||
while (reader.Read()) ids.Add(reader.GetInt64(0));
|
||||
|
||||
Assert.Equal(3, ids.Count);
|
||||
Assert.True(ids[0] < ids[1] && ids[1] < ids[2]);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task AllEventTypes_Accepted()
|
||||
{
|
||||
var types = new[] { "script", "alarm", "deployment", "connection", "store_and_forward", "instance_lifecycle" };
|
||||
foreach (var t in types)
|
||||
{
|
||||
await _logger.LogEventAsync(t, "Info", null, "Test", $"Event type: {t}");
|
||||
}
|
||||
|
||||
using var cmd = _verifyConnection.CreateCommand();
|
||||
cmd.CommandText = "SELECT COUNT(DISTINCT event_type) FROM site_events";
|
||||
var count = (long)cmd.ExecuteScalar()!;
|
||||
Assert.Equal(6, count);
|
||||
}
|
||||
}
|
||||
@@ -1,10 +0,0 @@
|
||||
namespace ScadaLink.SiteEventLogging.Tests;
|
||||
|
||||
public class UnitTest1
|
||||
{
|
||||
[Fact]
|
||||
public void Test1()
|
||||
{
|
||||
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user