/// <summary>
/// Create a new instance of <see cref="ExpectedDiagnostic"/>.
/// </summary>
/// <param name="diagnosticId">The expected diagnostic id.</param>
/// <param name="message">The expected message.</param>
/// <param name="codeWithErrorsIndicated">The code with error position indicated..</param>
/// <param name="cleanedSources"><paramref name="codeWithErrorsIndicated"/> without errors indicated.</param>
/// <returns>A new instance of <see cref="ExpectedDiagnostic"/>.</returns>
public static IReadOnlyList <ExpectedDiagnostic> CreateManyFromCodeWithErrorsIndicated(string diagnosticId, string message, string codeWithErrorsIndicated, out string cleanedSources)
{
var positions = CodeReader.FindLinePositions(codeWithErrorsIndicated).ToArray();
if (positions.Length == 0)
{
throw new ArgumentException("Expected one error position indicated, was zero.", nameof(codeWithErrorsIndicated));
}
cleanedSources = codeWithErrorsIndicated.Replace("↓", string.Empty);
var fileName = CodeReader.FileName(codeWithErrorsIndicated);
return(positions.Select(p => new ExpectedDiagnostic(diagnosticId, message, new FileLinePositionSpan(fileName, p, p)))
.ToArray());
}
/// <summary>
/// Create a new instance of <see cref="ExpectedDiagnostic"/> with position.
/// </summary>
/// <param name="codeWithErrorsIndicated">The code with error position indicated..</param>
/// <param name="cleanedSources"><paramref name="codeWithErrorsIndicated"/> without errors indicated.</param>
/// <returns>A new instance of <see cref="ExpectedDiagnostic"/>.</returns>
public ExpectedDiagnostic WithPositionFromCodeWithErrorsIndicated(string codeWithErrorsIndicated, out string cleanedSources)
{
var positions = CodeReader.FindLinePositions(codeWithErrorsIndicated).ToArray();
if (positions.Length == 0)
{
throw new ArgumentException("Expected one error position indicated, was zero.", nameof(codeWithErrorsIndicated));
}
if (positions.Length > 1)
{
throw new ArgumentException($"Expected one error position indicated, was {positions.Length}.", nameof(codeWithErrorsIndicated));
}
cleanedSources = codeWithErrorsIndicated.Replace("↓", string.Empty);
var fileName = CodeReader.FileName(codeWithErrorsIndicated);
var position = positions[0];
return(new ExpectedDiagnostic(this.Id, this.Message, new FileLinePositionSpan(fileName, position, position)));
}
/// <summary>
/// Get the expected diagnostics and cleaned sources.
/// </summary>
/// <param name="analyzerId">The descriptor diagnosticId that is expected to produce diagnostics.</param>
/// <param name="message">The expected message for the diagnostics, can be null.</param>
/// <param name="code">The code with errors indicated.</param>
/// <returns>An instance of <see cref="DiagnosticsAndSources"/>.</returns>
public static DiagnosticsAndSources CreateFromCodeWithErrorsIndicated(string analyzerId, string?message, IReadOnlyList <string> code)
{
if (analyzerId is null)
{
throw new ArgumentNullException(nameof(analyzerId));
}
if (code is null)
{
throw new ArgumentNullException(nameof(code));
}
var diagnostics = new List <ExpectedDiagnostic>();
var cleanedSources = new List <string>();
foreach (var source in code)
{
var positions = CodeReader.FindLinePositions(source).ToArray();
if (positions.Length == 0)
{
cleanedSources.Add(source);
continue;
}
cleanedSources.Add(source.Replace("↓", string.Empty));
var fileName = CodeReader.FileName(source);
diagnostics.AddRange(positions.Select(p => new ExpectedDiagnostic(analyzerId, message, new FileLinePositionSpan(fileName, p, p))));
}
if (diagnostics.Count == 0)
{
throw new InvalidOperationException("Expected code to have at least one error position indicated with '↓'");
}
return(new DiagnosticsAndSources(diagnostics, cleanedSources));
}