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using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Diagnostics;
using NUnit.Framework;
using SMAPI.ModBuildConfig.Analyzer.Tests.Framework;
using StardewModdingAPI.ModBuildConfig.Analyzer;
namespace SMAPI.ModBuildConfig.Analyzer.Tests
{
/// <summary>Unit tests for <see cref="ObsoleteFieldAnalyzer"/>.</summary>
[TestFixture]
public class ObsoleteFieldAnalyzerTests : DiagnosticVerifier
{
/*********
** Fields
*********/
/// <summary>Sample C# mod code, with a {{test-code}} placeholder for the code in the Entry method to test.</summary>
const string SampleProgram = @"
using System;
using StardewValley;
using Netcode;
using SObject = StardewValley.Object;
namespace SampleMod
{
class ModEntry
{
public void Entry()
{
{{test-code}}
}
}
}
";
/// <summary>The line number where the unit tested code is injected into <see cref="SampleProgram"/>.</summary>
private const int SampleCodeLine = 13;
/// <summary>The column number where the unit tested code is injected into <see cref="SampleProgram"/>.</summary>
private const int SampleCodeColumn = 25;
/*********
** Unit tests
*********/
/// <summary>Test that no diagnostics are raised for an empty code block.</summary>
[TestCase]
public void EmptyCode_HasNoDiagnostics()
{
// arrange
string test = @"";
// assert
this.VerifyCSharpDiagnostic(test);
}
/// <summary>Test that the expected diagnostic message is raised for an obsolete field reference.</summary>
/// <param name="codeText">The code line to test.</param>
/// <param name="column">The column within the code line where the diagnostic message should be reported.</param>
/// <param name="oldName">The old field name which should be reported.</param>
/// <param name="newName">The new field name which should be reported.</param>
[TestCase("var x = new Farmer().friendships;", 8, "StardewValley.Farmer.friendships", "friendshipData")]
[TestCase("var x = new Farmer()?.friendships;", 8, "StardewValley.Farmer.friendships", "friendshipData")]
public void AvoidObsoleteField_RaisesDiagnostic(string codeText, int column, string oldName, string newName)
{
// arrange
string code = ObsoleteFieldAnalyzerTests.SampleProgram.Replace("{{test-code}}", codeText);
DiagnosticResult expected = new DiagnosticResult
{
Id = "AvoidObsoleteField",
Message = $"The '{oldName}' field is obsolete and should be replaced with '{newName}'. See https://smapi.io/package/avoid-obsolete-field for details.",
Severity = DiagnosticSeverity.Warning,
Locations = new[] { new DiagnosticResultLocation("Test0.cs", ObsoleteFieldAnalyzerTests.SampleCodeLine, ObsoleteFieldAnalyzerTests.SampleCodeColumn + column) }
};
// assert
this.VerifyCSharpDiagnostic(code, expected);
}
/*********
** Helpers
*********/
/// <summary>Get the analyzer being tested.</summary>
protected override DiagnosticAnalyzer GetCSharpDiagnosticAnalyzer()
{
return new ObsoleteFieldAnalyzer();
}
}
}
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