private static string GetNotInExpectedFileMessage(
DiagnosticAnalyzer analyzer,
Diagnostic diagnostic,
DiagnosticResultLocation expected,
FileLinePositionSpan actualSpan)
{
return($"Expected diagnostic to be in file \"{expected.Path}\" was actually in file \"{actualSpan.Path}\"{Environment.NewLine}{Environment.NewLine}Diagnostic:{Environment.NewLine} {FormatDiagnostics(analyzer, new[] { diagnostic })}{Environment.NewLine}");
}
private static string GetNotInExpectedColumn(
DiagnosticAnalyzer analyzer,
Diagnostic diagnostic,
DiagnosticResultLocation expected,
LinePosition actualLinePosition)
{
return($"Expected diagnostic to start at column \"{expected.Column}\" was actually at column \"{actualLinePosition.Character + 1}\"{Environment.NewLine}{Environment.NewLine}Diagnostic:{Environment.NewLine} {FormatDiagnostics(analyzer, new[] { diagnostic })}{Environment.NewLine}");
}
private static string GetNotInExpectedLineMessage(
DiagnosticAnalyzer analyzer,
Diagnostic diagnostic,
DiagnosticResultLocation expected,
LinePosition actualLinePosition)
{
return($"Expected diagnostic to be on line \"{expected.Line}\" was actually on line \"{actualLinePosition.Line + 1}\"{Environment.NewLine}{Environment.NewLine}Diagnostic:{Environment.NewLine} {FormatDiagnostics(analyzer, new[] { diagnostic })}{Environment.NewLine}");
}
/// <summary>
/// Helper method to VerifyDiagnosticResult that checks the location of a diagnostic and compares it with the location in the expected DiagnosticResult.
/// </summary>
/// <param name="analyzer">The analyzer that was being run on the sources</param>
/// <param name="diagnostic">The diagnostic that was found in the code</param>
/// <param name="actual">The Location of the Diagnostic found in the code</param>
/// <param name="expected">The DiagnosticResultLocation that should have been found</param>
private static VerifyDiagnosticAnalyzerResult VerifyDiagnosticLocation(
DiagnosticAnalyzer analyzer,
Diagnostic diagnostic,
Location actual,
DiagnosticResultLocation expected)
{
var actualSpan = actual.GetLineSpan();
var isInExpectedFile = actualSpan.Path == expected.Path ||
(actualSpan.Path != null &&
actualSpan.Path.Contains("Test0.") &&
expected.Path.Contains("Test."));
if (!isInExpectedFile)
{
string msg = GetNotInExpectedFileMessage(analyzer, diagnostic, expected, actualSpan);
return(VerifyDiagnosticAnalyzerResult.Fail(msg));
}
var actualLinePosition = actualSpan.StartLinePosition;
// Only check line position if there is an actual line in the real diagnostic
if (actualLinePosition.Line > 0)
{
if (actualLinePosition.Line + 1 != expected.Line)
{
string msg = GetNotInExpectedLineMessage(analyzer, diagnostic, expected, actualLinePosition);
return(VerifyDiagnosticAnalyzerResult.Fail(msg));
}
}
// Only check column position if there is an actual column position in the real diagnostic
if (actualLinePosition.Character > 0)
{
if (actualLinePosition.Character + 1 != expected.Column)
{
string msg = GetNotInExpectedColumn(analyzer, diagnostic, expected, actualLinePosition);
return(VerifyDiagnosticAnalyzerResult.Fail(msg));
}
}
return(VerifyDiagnosticAnalyzerResult.Ok());
}
