554 lines
22 KiB
C#
554 lines
22 KiB
C#
using Microsoft.Extensions.Caching.Memory;
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using NSubstitute;
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using ScadaLink.CentralUI.ScriptAnalysis;
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namespace ScadaLink.CentralUI.Tests.ScriptAnalysis;
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public class ScriptAnalysisServiceTests
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{
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private readonly ISharedScriptCatalog _catalog = Substitute.For<ISharedScriptCatalog>();
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private readonly IMemoryCache _cache = new MemoryCache(new MemoryCacheOptions { SizeLimit = 100 });
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private readonly IServiceProvider _services = Substitute.For<IServiceProvider>();
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private readonly ScriptAnalysisService _svc;
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private static ScriptShape Shape(string name, params ParameterShape[] ps) =>
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new(name, ps, null);
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private static ParameterShape Param(string name, string type = "String", bool required = true) =>
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new(name, type, required);
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public ScriptAnalysisServiceTests()
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{
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_catalog.GetShapesAsync().Returns(Array.Empty<ScriptShape>());
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_svc = new ScriptAnalysisService(_catalog, _cache, _services);
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}
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// ── Diagnose ──────────────────────────────────────────────────────────
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[Fact]
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public void EmptyCode_NoMarkers()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(""));
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Assert.Empty(resp.Markers);
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}
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[Fact]
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public void CleanScript_NoMarkers()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest("var x = 1 + 2; return x;"));
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Assert.Empty(resp.Markers);
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}
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[Fact]
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public void MissingSemicolon_ReportsRoslynDiagnostic()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest("var x = 1\n"));
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Assert.Contains(resp.Markers, m => m.Code.StartsWith("CS"));
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}
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[Fact]
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public void ForbiddenUsingDirective_RaisesSCADA001()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest("using System.IO;"));
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Assert.Contains(resp.Markers, m => m.Code == "SCADA001" && m.Message.Contains("System.IO"));
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}
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[Theory]
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[InlineData("System.Diagnostics")]
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[InlineData("System.Reflection")]
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[InlineData("System.Net")]
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public void ForbiddenUsing_AllBannedNamespaces(string ns)
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{
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var resp = _svc.Diagnose(new DiagnoseRequest($"using {ns};"));
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Assert.Contains(resp.Markers, m => m.Code == "SCADA001" && m.Message.Contains(ns));
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}
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[Fact]
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public void ForbiddenTypeUsage_ResolvesViaSemanticModel()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(
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"using System.IO; var s = File.ReadAllText(\"x\");"));
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Assert.Contains(resp.Markers, m => m.Code == "SCADA002" && m.Message.Contains("File"));
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}
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[Fact]
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public void UserIdentifierNamedFile_DoesNotFalsePositive()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(
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"var File = \"hello\"; return File.Length;"));
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Assert.DoesNotContain(resp.Markers, m => m.Code == "SCADA002");
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}
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[Fact]
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public void UserIdentifierNamedThread_DoesNotFalsePositive()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(
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"var Thread = 42; return Thread;"));
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Assert.DoesNotContain(resp.Markers, m => m.Code == "SCADA002");
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}
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[Fact]
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public void DiagnosticsAreCached_SecondCallSkipsRecompile()
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{
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var req = new DiagnoseRequest("using System.IO;");
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var first = _svc.Diagnose(req);
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var second = _svc.Diagnose(req);
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Assert.Same(first, second);
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}
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[Fact]
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public void DifferentCode_GetsDifferentCacheEntries()
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{
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var a = _svc.Diagnose(new DiagnoseRequest("var x = 1;"));
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var b = _svc.Diagnose(new DiagnoseRequest("var y = 2;"));
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Assert.NotSame(a, b);
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}
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[Fact]
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public void UnknownParameterKey_RaisesSCADA003()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(
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Code: "var x = Parameters[\"typo\"];",
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DeclaredParameters: new[] { "name", "temperature" }));
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Assert.Contains(resp.Markers, m => m.Code == "SCADA003" && m.Message.Contains("'typo'"));
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}
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[Fact]
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public void DeclaredParameterKey_NoMarker()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(
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Code: "var x = Parameters[\"name\"];",
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DeclaredParameters: new[] { "name", "temperature" }));
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Assert.DoesNotContain(resp.Markers, m => m.Code == "SCADA003");
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}
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// ── Completions ───────────────────────────────────────────────────────
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[Fact]
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public async Task ParametersStringLiteral_ReturnsDeclaredParameterNames()
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{
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var req = new CompletionsRequest(
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CodeText: "var x = Parameters[\"",
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Line: 1,
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Column: 21,
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DeclaredParameters: new[] { "name", "temperature" });
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var resp = await _svc.CompleteAsync(req);
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Assert.Contains(resp.Items, i => i.Label == "name" && i.Detail == "declared parameter");
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Assert.Contains(resp.Items, i => i.Label == "temperature");
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}
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[Fact]
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public async Task CallScriptStringLiteral_ReturnsSiblingNamesWithSnippet()
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{
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var siblings = new[] { Shape("SiblingA", Param("x")) };
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var req = new CompletionsRequest(
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CodeText: "var x = Instance.CallScript(\"",
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Line: 1,
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Column: 30,
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SiblingScripts: siblings);
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var resp = await _svc.CompleteAsync(req);
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var item = Assert.Single(resp.Items, i => i.Label == "SiblingA");
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Assert.Equal(4, item.InsertTextRules);
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// The runtime call API takes args as an anonymous object — the snippet
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// emits one member per declared parameter.
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Assert.Contains("new { x = ${1:x} }", item.InsertText);
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Assert.Contains("sibling script", item.Detail);
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}
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[Fact]
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public async Task CallSharedStringLiteral_ResolvesViaCatalogWithShapes()
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{
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_catalog.GetShapesAsync().Returns(new[]
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{
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Shape("GetWeather"),
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Shape("Greet", Param("name"))
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});
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var req = new CompletionsRequest(
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CodeText: "var x = Scripts.CallShared(\"",
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Line: 1,
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Column: 29);
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var resp = await _svc.CompleteAsync(req);
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// No-parameter shape: snippet just closes the call.
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var weather = Assert.Single(resp.Items, i => i.Label == "GetWeather");
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Assert.Equal("GetWeather\")", weather.InsertText);
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// Parameterized shape: anonymous-object member per parameter.
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var greet = Assert.Single(resp.Items, i => i.Label == "Greet");
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Assert.Contains("new { name = ${1:name} }", greet.InsertText);
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Assert.Contains("shared script", greet.Detail);
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}
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[Fact]
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public async Task GeneralCompletion_ReturnsInScopeSymbols()
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{
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var req = new CompletionsRequest("var x = ", 1, 9);
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var resp = await _svc.CompleteAsync(req);
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// SandboxScriptHost globals are surfaced as in-scope symbols. The
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// runtime call API is member-access — Scripts.CallShared / Instance.*
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// — so the top-level globals are Parameters, Scripts, and Instance.
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Assert.Contains(resp.Items, i => i.Label == "Parameters");
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Assert.Contains(resp.Items, i => i.Label == "Scripts");
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Assert.Contains(resp.Items, i => i.Label == "Instance");
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}
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// ── Hover ─────────────────────────────────────────────────────────────
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[Fact]
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public async Task Hover_OnSiblingName_ReturnsSignature()
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{
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var siblings = new[] { Shape("Calc", Param("x", "Integer"), Param("y", "Float")) };
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// Cursor inside the "Calc" name literal of Instance.CallScript("Calc", ...).
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var resp = await _svc.Hover(new HoverRequest(
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CodeText: "var r = Instance.CallScript(\"Calc\", 1, 2);",
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Line: 1,
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Column: 32,
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SiblingScripts: siblings));
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Assert.NotNull(resp.Markdown);
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Assert.Contains("sibling script", resp.Markdown);
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Assert.Contains("Calc(x: Integer, y: Float): void", resp.Markdown);
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}
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[Fact]
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public async Task Hover_OnUnrelatedToken_ReturnsNull()
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{
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var resp = await _svc.Hover(new HoverRequest(
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CodeText: "var r = 1 + 2;",
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Line: 1,
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Column: 5));
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Assert.Null(resp.Markdown);
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}
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// ── Signature help ────────────────────────────────────────────────────
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[Fact]
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public async Task SignatureHelp_InsideCallScript_ReturnsParameterStrip()
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{
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var siblings = new[] { Shape("Calc", Param("x", "Integer"), Param("y", "Float")) };
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var resp = await _svc.SignatureHelp(new SignatureHelpRequest(
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CodeText: "var r = Instance.CallScript(\"Calc\", 1, ",
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Line: 1,
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Column: 40,
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SiblingScripts: siblings));
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Assert.Equal("Instance.CallScript(\"Calc\", x: Integer, y: Float)", resp.Label);
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Assert.Equal(2, resp.Parameters!.Count);
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Assert.Equal("x: Integer", resp.Parameters[0].Label);
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Assert.Equal("y: Float", resp.Parameters[1].Label);
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Assert.Equal(1, resp.ActiveParameter);
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}
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[Fact]
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public async Task SignatureHelp_OutsideCall_ReturnsNull()
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{
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var resp = await _svc.SignatureHelp(new SignatureHelpRequest(
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CodeText: "var r = 1 + 2;",
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Line: 1,
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Column: 5));
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Assert.Null(resp.Label);
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}
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// ── Format ────────────────────────────────────────────────────────────
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[Fact]
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public void Format_ScrambledCode_ReturnsPrettyPrinted()
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{
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var resp = _svc.Format(new FormatRequest("if(x){return 1;}else{return 2;}"));
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// Roslyn's default formatter adds spaces around keywords/braces.
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Assert.Contains("if (x)", resp.Code);
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Assert.NotEqual("if(x){return 1;}else{return 2;}", resp.Code);
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}
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[Fact]
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public void Format_EmptyCode_ReturnsEmpty()
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{
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Assert.Equal("", _svc.Format(new FormatRequest("")).Code);
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}
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// ── Self / Children / Parent attribute completions ────────────────────
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private static AttributeShape Attr(string name, string type = "String") => new(name, type);
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private static CompositionContext Comp(string name, AttributeShape[]? attrs = null, ScriptShape[]? scripts = null)
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=> new(name, attrs ?? Array.Empty<AttributeShape>(), scripts ?? Array.Empty<ScriptShape>());
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[Fact]
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public async Task SelfAttribute_Literal_ReturnsSelfAttributeNames()
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{
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var req = new CompletionsRequest(
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CodeText: "var x = Attributes[\"",
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Line: 1,
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Column: 21,
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SelfAttributes: new[] { Attr("Temperature"), Attr("Setpoint", "Float") });
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var resp = await _svc.CompleteAsync(req);
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Assert.Contains(resp.Items, i => i.Label == "Temperature");
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Assert.Contains(resp.Items, i => i.Label == "Setpoint" && i.Detail.Contains("Float"));
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}
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[Fact]
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public async Task ChildAttribute_Literal_ReturnsChildAttributeNames()
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{
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var req = new CompletionsRequest(
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CodeText: "var x = Children[\"TempSensor\"].Attributes[\"",
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Line: 1,
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Column: 44,
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Children: new[] { Comp("TempSensor", attrs: new[] { Attr("Temperature"), Attr("Humidity") }) });
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var resp = await _svc.CompleteAsync(req);
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Assert.Contains(resp.Items, i => i.Label == "Temperature");
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Assert.Contains(resp.Items, i => i.Label == "Humidity");
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}
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[Fact]
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public async Task ParentAttribute_Literal_ReturnsParentAttributeNames()
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{
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var req = new CompletionsRequest(
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CodeText: "var x = Parent.Attributes[\"",
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Line: 1,
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Column: 28,
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Parent: Comp("Motor", attrs: new[] { Attr("SpeedRPM") }));
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var resp = await _svc.CompleteAsync(req);
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Assert.Contains(resp.Items, i => i.Label == "SpeedRPM");
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}
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[Fact]
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public async Task ChildrenLiteral_ReturnsCompositionNames()
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{
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var req = new CompletionsRequest(
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CodeText: "var x = Children[\"",
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Line: 1,
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Column: 19,
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Children: new[] { Comp("TempSensor"), Comp("PressureSensor") });
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var resp = await _svc.CompleteAsync(req);
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Assert.Contains(resp.Items, i => i.Label == "TempSensor" && i.Detail == "composition");
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Assert.Contains(resp.Items, i => i.Label == "PressureSensor");
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}
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[Fact]
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public void UnknownSelfAttribute_RaisesSCADA006()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(
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Code: "var x = Attributes[\"Typo\"];",
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SelfAttributes: new[] { Attr("Temperature") }));
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Assert.Contains(resp.Markers, m => m.Code == "SCADA006" && m.Message.Contains("Typo"));
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}
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[Fact]
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public void KnownSelfAttribute_NoMarker()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(
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Code: "var x = Attributes[\"Temperature\"];",
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SelfAttributes: new[] { Attr("Temperature") }));
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Assert.DoesNotContain(resp.Markers, m => m.Code == "SCADA006");
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}
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[Fact]
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public void UnknownChildAttribute_RaisesSCADA006()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(
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Code: "var x = Children[\"TempSensor\"].Attributes[\"Typo\"];",
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Children: new[] { Comp("TempSensor", attrs: new[] { Attr("Temperature") }) }));
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Assert.Contains(resp.Markers, m => m.Code == "SCADA006" && m.Message.Contains("TempSensor"));
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}
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[Fact]
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public void UnknownComposition_RaisesSCADA007()
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{
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var resp = _svc.Diagnose(new DiagnoseRequest(
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Code: "var x = Children[\"Unknown\"].Attributes[\"X\"];",
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Children: new[] { Comp("TempSensor") }));
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Assert.Contains(resp.Markers, m => m.Code == "SCADA007" && m.Message.Contains("Unknown"));
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}
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[Fact]
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public async Task ChildrenCallScript_ReturnsChildScripts()
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{
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var req = new CompletionsRequest(
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CodeText: "var x = Children[\"TempSensor\"].CallScript(\"",
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Line: 1,
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Column: 44,
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Children: new[]
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{
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Comp("TempSensor", scripts: new[] { Shape("Sample", Param("count", "Integer")) })
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});
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var resp = await _svc.CompleteAsync(req);
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var sample = Assert.Single(resp.Items, i => i.Label == "Sample");
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Assert.Contains("script on TempSensor", sample.Detail);
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Assert.Contains("${1:count}", sample.InsertText);
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}
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[Fact]
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public async Task ParentCallScript_ReturnsParentScripts()
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{
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var req = new CompletionsRequest(
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CodeText: "var x = Parent.CallScript(\"",
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Line: 1,
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Column: 28,
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Parent: Comp("Motor", scripts: new[] { Shape("Trip") }));
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var resp = await _svc.CompleteAsync(req);
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Assert.Contains(resp.Items, i => i.Label == "Trip" && i.Detail.Contains("parent script"));
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}
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// ── Hover on Parameters["name"] ───────────────────────────────────────
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[Fact]
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public async Task Hover_OnParametersKey_ShowsDeclaredType()
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{
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var resp = await _svc.Hover(new HoverRequest(
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CodeText: "var x = Parameters[\"name\"];",
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Line: 1,
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Column: 22,
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DeclaredParameters: new[] { new ParameterShape("name", "String", true) }));
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Assert.NotNull(resp.Markdown);
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Assert.Contains("name", resp.Markdown);
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Assert.Contains("String", resp.Markdown);
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}
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// ── CentralUI-001: trust-model gate before sandbox execution ──────────
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[Fact]
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public void Diagnose_FullyQualifiedForbiddenCall_RaisesSCADA002()
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{
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// A forbidden API reached by fully-qualified name (no `using`, no bare
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// type identifier) must still be flagged — the pre-fix semantic check
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// only inspected the leftmost identifier and missed this shape.
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var resp = _svc.Diagnose(new DiagnoseRequest(
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"var d = System.IO.Directory.GetCurrentDirectory(); return d;"));
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Assert.Contains(resp.Markers, m => m.Code == "SCADA002");
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}
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[Fact]
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public async Task RunInSandbox_FullyQualifiedForbiddenApi_IsBlockedBeforeExecution()
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{
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// Regression test for CentralUI-001. RunInSandboxAsync used to execute any
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// script that compiled, with no trust-model enforcement — so fully-qualified
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// forbidden API code ran in the central host process. The fix gates execution
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// on the forbidden-API analysis.
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var result = await _svc.RunInSandboxAsync(
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new SandboxRunRequest(
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"var d = System.IO.Directory.GetCurrentDirectory(); return d;",
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Parameters: null,
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TimeoutSeconds: null),
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CancellationToken.None);
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Assert.False(result.Success);
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Assert.Equal(SandboxErrorKind.CompileError, result.ErrorKind);
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Assert.Contains("trust model", result.Error);
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Assert.NotNull(result.Markers);
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Assert.Contains(result.Markers!, m => m.Code is "SCADA001" or "SCADA002");
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}
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[Fact]
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public async Task RunInSandbox_ForbiddenUsingDirective_IsBlockedBeforeExecution()
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{
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var result = await _svc.RunInSandboxAsync(
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new SandboxRunRequest(
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"using System.Diagnostics; var p = Process.GetCurrentProcess().Id; return p;",
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Parameters: null,
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TimeoutSeconds: null),
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CancellationToken.None);
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Assert.False(result.Success);
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Assert.Equal(SandboxErrorKind.CompileError, result.ErrorKind);
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}
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[Fact]
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public async Task RunInSandbox_CleanScript_StillRuns()
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{
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// The gate must not block a script that stays within the allowed surface.
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var result = await _svc.RunInSandboxAsync(
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new SandboxRunRequest("return 21 * 2;", Parameters: null, TimeoutSeconds: null),
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CancellationToken.None);
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Assert.True(result.Success);
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Assert.Equal("42", result.ReturnValueJson);
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}
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[Fact]
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public async Task RunInSandbox_CapturesConsoleOutput()
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{
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var result = await _svc.RunInSandboxAsync(
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new SandboxRunRequest(
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"System.Console.WriteLine(\"hello-sandbox\"); return 1;",
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Parameters: null,
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TimeoutSeconds: null),
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CancellationToken.None);
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Assert.True(result.Success);
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Assert.Contains("hello-sandbox", result.ConsoleOutput);
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}
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[Fact]
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public async Task RunInSandbox_ConcurrentRuns_DoNotCrossContaminateConsoleOutput()
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{
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// Regression test for CentralUI-003. RunInSandboxAsync used to redirect the
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// process-global Console.Out/Error to a per-call StringWriter. While one run
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// is mid-flight, any concurrent run's `finally` restores Console.Out to the
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// ORIGINAL writer — so the long run loses every Console.WriteLine it makes
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// after that point, and short runs cross-contaminate each other. The fix
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// routes capture per-call via an AsyncLocal writer without mutating
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// process-global Console state.
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// A long-running script: writes its tag, then burns CPU, then writes again,
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// repeatedly. While it spins, many short runs start and finish around it.
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async Task<string> RunLong()
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{
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var code = @"
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for (int i = 0; i < 40; i++)
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{
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System.Console.WriteLine(""LONG"");
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long acc = 0;
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for (long j = 0; j < 2_000_000; j++) acc += j;
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System.Console.WriteLine(""LONG"" + acc);
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}
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return 0;";
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var r = await _svc.RunInSandboxAsync(
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new SandboxRunRequest(code, Parameters: null, TimeoutSeconds: 30),
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CancellationToken.None);
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Assert.True(r.Success, r.Error);
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return r.ConsoleOutput;
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}
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async Task<string> RunShort(int id)
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{
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var code = $"for (int i = 0; i < 30; i++) System.Console.WriteLine(\"S{id}\"); return 0;";
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var r = await _svc.RunInSandboxAsync(
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new SandboxRunRequest(code, Parameters: null, TimeoutSeconds: 30),
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CancellationToken.None);
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Assert.True(r.Success, r.Error);
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return r.ConsoleOutput;
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}
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var longTask = RunLong();
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var shortTasks = new List<Task<string>>();
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for (var round = 0; round < 12; round++)
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{
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for (var k = 0; k < 4; k++)
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shortTasks.Add(RunShort(round * 4 + k));
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await Task.Yield();
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}
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var longOut = await longTask;
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var shortOuts = await Task.WhenAll(shortTasks);
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// The long run must have captured ALL 80 of its own writes (40 plain + 40 acc).
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var longLines = longOut.Split('\n', StringSplitOptions.RemoveEmptyEntries)
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.Count(l => l.StartsWith("LONG"));
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Assert.Equal(80, longLines);
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// No short run's output must have leaked into the long run's capture.
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for (var i = 0; i < shortOuts.Length; i++)
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Assert.DoesNotContain($"S{i}", longOut);
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// Each short run captured exactly its own 30 lines and nothing else.
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for (var i = 0; i < shortOuts.Length; i++)
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{
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var lines = shortOuts[i].Split('\n', StringSplitOptions.RemoveEmptyEntries);
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Assert.Equal(30, lines.Length);
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Assert.All(lines, l => Assert.Equal($"S{i}", l.Trim()));
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}
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}
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}
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