/// <summary>
/// Helper method to <see cref="VerifyDiagnosticResults"/> that checks the location of
/// a <see cref="Diagnostic"/> and compares it with the <see cref="Location"/> in the
/// expected <see cref="DiagnosticResult"/>.
/// </summary>
/// <param name="language"></param>
/// <param name="analyzer">The <see cref="DiagnosticAnalyzer"/> that was being run on the sources.</param>
/// <param name="actualDiagnostic">The <see cref="Diagnostic"/> that was found in the code.</param>
/// <param name="actualLocation">The <see cref="Location"/> of the <paramref name="actualDiagnostic"/> found in the code.</param>
/// <param name="expectedResult">The <see cref="DiagnosticResultLocation"/> that should have been found.</param>
/// <exception cref="BadDiagnosticLocationException"></exception>
protected virtual void VerifyDiagnosticLocation(string language, DiagnosticAnalyzer analyzer
, DiagnosticResultLocation expectedResult, Diagnostic actualDiagnostic, Location actualLocation)
{
var actualSpan = actualLocation.GetLineSpan();
if (actualSpan.Path != expectedResult.Path &&
(IsNullOrEmpty(actualSpan.Path) ||
!actualSpan.Path.Contains($"{DefaultFilePathPrefix}0.") ||
!expectedResult.Path.Contains($"{DefaultFilePathPrefix}.")))
{
throw new BadDiagnosticLocationException(
$"Expected diagnostic to be in file \"${expectedResult.Path}\""
+ $" but was in file \"{actualSpan.Path}\""
, language, analyzer, PathMismatch, expectedResult, actualDiagnostic, actualLocation);
}
var actualLinePosition = actualSpan.StartLinePosition;
if (actualLinePosition.Line > 0 && actualLinePosition.Line + 1 != expectedResult.Line)
{
throw new BadDiagnosticLocationException(
$"Expected diagnostic to be on line \"{expectedResult.Line}\""
+ $" but was on line \"{actualLinePosition.Line + 1}\""
, language, analyzer, LineMismatch, expectedResult, actualDiagnostic, actualLocation);
}
if (actualLinePosition.Character > 0 && actualLinePosition.Character + 1 != expectedResult.Column)
{
throw new BadDiagnosticLocationException(
$"Expected diagnostic to start at column \"{expectedResult.Column}\""
+ $" but was at column \"{actualLinePosition.Character + 1}\""
, language, analyzer, ColumnMismatch, expectedResult, actualDiagnostic, actualLocation);
}
}
internal BadDiagnosticLocationException(string message, string language, DiagnosticAnalyzer analyzer
, VerificationResult result, DiagnosticResultLocation expectedResultLocation
, Diagnostic actualDiagnostic, Location actualLocation)
: base(message, result)
{
Language = language;
Analyzer = analyzer;
ExpectedResultLocation = expectedResultLocation;
ActualDiagnostic = actualDiagnostic;
ActualLocation = actualLocation;
}